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                                                                     EXHIBIT 4.6

THESE SECURITIES HAVE BEEN ISSUED PURSUANT TO EXEMPTIONS FOR NONPUBLIC OFFERINGS
FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT OF 1933, AS AMENDED,
AND APPLICABLE STATE SECURITIES LAWS, AND, ACCORDINGLY, THESE SECURITIES MAY NOT
BE RESOLD OR OTHERWISE DISPOSED OF UNLESS, IN THE OPINION OF COUNSEL FOR OR
SATISFACTORY TO THE ISSUER, REGISTRATION UNDER THE APPLICABLE FEDERAL OR STATE
SECURITIES LAWS IS NOT REQUIRED OR COMPLIANCE IS MADE WITH SUCH REGISTRATION
REQUIREMENTS.

     Void after 5:00 p.m. New York Time, on October 22, 2004

               WARRANT TO PURCHASE 939,441 SHARES OF COMMON STOCK

                                       OF

                           OPEN PORT TECHNOLOGY, INC.

This is to certify that, FOR VALUE RECEIVED, Deutsche Bank Securities Inc. or
its registered assigns pursuant to Section (d) hereof ("Holder"), is entitled to
purchase, subject to the provisions of this Warrant, from Open Port Technology,
Inc., an Illinois corporation (the "Company"), 939,441 fully paid, validly
issued and nonassessable shares of Common Stock, par value $.001 per share, of
the Company ("Common Stock"), at the exercise price of $1.61 per share until
October 22, 2004.  The number of shares of Common Stock to be received upon the
exercise of this Warrant and the Exercise Price to be paid for each share of
Common Stock may be adjusted from time to time as hereinafter set forth.  The
shares of Common Stock deliverable upon such exercise, and as adjusted from time
to time, are hereinafter sometimes referred to as "Warrant Shares," and the
exercise price of a share of Common Stock as adjusted from time to time is
hereinafter sometimes referred to as the "Exercise Price."

     (a) EXERCISE OF WARRANT; NOTIFICATION OF EXPIRATION DATE OF WARRANT.  The
Warrant may be exercised as to a minimum of 100,000 Warrant Shares (as adjusted
for any stock dividends, combinations, splits, and the like with respect to the
Common Stock) at any time or from time to time, until 5:00 P.M. New York time on
October 22, 2004 (the "Expiration Date"), provided, however, that if such day is
a day on which banking institutions in the State of New York are authorized by
law to close, then on the next succeeding day which shall not be such a day.
The Warrant may be exercised by presentation and surrender hereof to the Company
at its principal office, or at the office of its stock transfer agent, if any,
with the Purchase Form annexed hereto duly executed (with signature guaranteed
if required by the Company or its stock transfer agent) and accompanied by
payment of the Exercise Price for the number of Warrant Shares specified in such
form and any applicable taxes.  The Exercise Price for any Warrant Shares
purchased pursuant to the exercise of this Warrant shall be paid in full upon
such exercise in cash or by certified or bank check or pursuant to a cashless
exercise procedure whereby the Warrant Shares issued upon exercise of this
Warrant will be sold by the
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Holder in compliance with all applicable federal and state securities laws, or
pursuant to applicable exemptions therefrom (such compliance or the availability
of such exemptions to be to the reasonable satisfaction of the Company) with
Holder receiving the difference between the Exercise Price and the sale price,
in cash, and the Company receiving the Exercise Price for the Warrant Shares, in
cash, or any combination of the foregoing methods of paying the Exercise Price.
In the alternative, the Warrant may be exchanged for Warrant Shares as described
in Section (l). As soon as practicable after each such exercise of the Warrants,
but not later than seven (7) business days from the date of such exercise, the
Company shall issue and deliver to the Holder a certificate or certificates for
the Warrant Shares issuable upon such exercise, registered in the name of the
Holder or the Holder's designee, except in the case of a cashless exercise. If
the Warrant should be exercised in part only, the Company shall, upon surrender
of the Warrant for cancellation, execute and deliver a new Warrant evidencing
the rights of the Holder thereof to purchase the balance of the Warrant Shares
purchasable thereunder. In the event of a cash exercise, upon receipt by the
Company of the Warrant at its office, or by the stock transfer agent of the
Company at its office, in proper form for exercise, together with the exercise
price thereof and taxes as aforesaid in cash or certified or bank check and the
investment letter described below, the Holder shall be deemed to be the holder
of record of the shares of Common Stock issuable upon such exercise,
notwithstanding that the stock transfer books of the Company shall then be
closed or that certificates representing such shares of Common Stock shall not
then be physically delivered to the Holder. In order to assure the availability
of an exemption from registration under the federal or applicable state
securities laws, the Company may condition the exercise of the Warrant upon the
Holder delivering to the Company an investment letter in the form as customarily
used by the Company from time to time in connection with the exercise of non-
registered options and warrants which are issued by the Company. It is further
understood that certificates for the Warrant Shares, if any, to be issued upon
exercise of the Warrant may contain a restrictive legend in accordance with
Section (j) hereof.

     (b) RESERVATION OF SHARES.  The Company shall at all times reserve for
issuance and/or delivery upon exercise of this Warrant such number of shares of
its Common Stock as shall be required for issuance and delivery upon exercise of
the Warrants. If the Common Stock is or becomes listed on any national
securities exchange or the NASDAQ National Market System, the Company shall also
notify such exchange or the NASDAQ system, as the case may be, of the issuance
of the Warrant Shares as required to maintain the listing of its Common Stock on
such exchange or the NASDAQ system, as the case may be.

     (c) FRACTIONAL SHARES.  No fractional shares or scrip representing
fractional shares shall be issued upon the exercise of the Warrant. With
respect to any fraction of a share called for upon any exercise hereof, the
Company shall pay to the Holder an amount in cash equal to such fraction
multiplied by the current market value of a share, determined as follows:

         (1) If the Common Stock is listed on a national securities exchange or
         admitted to unlisted trading privileges on such exchange or listed for
         trading on the NASDAQ National Market System, the current market value
         shall be the last reported sale

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         price of the Common Stock on such exchange or system on the last
         business day prior to the date of exercise of this Warrant or if no
         such sale is made on such day, the average closing bid and asked prices
         for such day on such exchange or system;

         (2) If the Common Stock is not so listed or admitted to unlisted
         trading privileges, the current market value shall be the mean of the
         last reported bid and asked prices reported by the National Quotation
         Bureau, Inc., on the last business day prior to the date of the
         exercise of this Warrant; or

         (3) If the Common Stock is not so listed or admitted to unlisted
          trading privileges and bid and asked prices are not so reported, the
          current market value shall be an amount determined in such reasonable
          manner as may be prescribed by the Board of Directors of the Company.

     (d)  EXCHANGE, TRANSFER, ASSIGNMENT OR LOSS OF WARRANT. The Warrant is
exchangeable, without expense, at the option of the Holder, upon presentation
and surrender hereof to the Company or at the office of its stock transfer
agent, if any, for other Warrants of different denominations, but in increments
of not less than 100,000 Warrant Shares (as adjusted for any stock dividends,
combinations, splits, and the like with respect to the Common Stock), entitling
the Holder thereof to purchase in the aggregate the same number of shares of
Common Stock purchasable hereunder. Subject to Section (j) hereof, the Holder
may transfer or assign the Warrant, in whole or in part and from time to time;
provided that, at all times prior to an IPO, the Holder may only transfer or
assign the Warrant or the Warrant Shares to an affiliate of the Holder. Upon
surrender of this Warrant to the Company at its principal office or at the
office of its stock transfer agent, if any, with the Assignment Form annexed
hereto duly executed (with signature guaranteed, if required by the Company or
its stock transfer agent) and funds sufficient to pay any transfer tax, the
Company shall, without charge, execute and deliver a new Warrant in the name of
the assignee or assignees named in such instrument of assignment and this
Warrant shall promptly be canceled.  This Warrant may be divided by or combined
with other Warrants which carry the same rights upon presentation hereof at the
principal office of the Company or at the office of its stock transfer agent, if
any, together with a written notice specifying the names and denominations in
which new Warrants are to be issued and signed by the Holder hereof.  The term
"Warrant" as used herein includes any Warrants into which this Warrant my be
divided or exchanged.  Upon receipt by the Company of evidence satisfactory to
it of the loss, theft, destruction or mutilation of this Warrant, and in the
case of loss, theft or destruction, of reasonable satisfactory indemnification,
and upon surrender and cancellation of this Warrant, if mutilated, the Company
will execute and deliver a new Warrant of like tenor, date and amount. Any such
new Warrant executed and delivered shall constitute an additional contractual
obligation on the part of the Company, whether or not the original Warrant shall
be at any time enforceable by anyone.

     (e)  RIGHTS OF THE HOLDER.  The Holder shall not, by virtue hereof, be
entitled to any rights of a shareholder in the Company, either at law or equity,
and the rights of the Holder

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are limited to those expressed in the Warrant and are not enforceable against
the Company except to the extent set forth herein.

     (f)  ANTI-DILUTION PROVISIONS.  So long as this Warrant shall be
outstanding, the Exercise Price in effect at any time and the number and kind of
securities purchasable upon the exercise of the Warrants shall be subject to
adjustment from time to time upon the happening of certain events as follows:

             (1) In case the Company shall (i) declare a dividend or make a
                 distribution on its outstanding shares of Common Stock in
                 shares of Common Stock, (ii) subdivide or reclassify its
                 outstanding shares of Common Stock into a greater number of
                 shares, or (iii) combine or reclassify its outstanding shares
                 of Common Stock into a smaller number of shares, the Exercise
                 Price in effect at the time of the record date for such
                 dividend or distribution, or the effective date of such
                 subdivision, combination or reclassification shall be
                 proportionately adjusted as of the effective date of such event
                 by multiplying such Exercise Price by a fraction, the
                 denominator of which shall be the number of shares of Common
                 Stock outstanding immediately following such event and the
                 numerator of which shall be the number of shares of Common
                 Stock outstanding immediately prior thereto. For example, if
                 the Company declares a 2 for 1 stock distribution and the
                 Exercise Price immediately prior to such event was $1.00 per
                 share, the adjusted Exercise Price immediately after such event
                 would be $.50 per share. Such adjustment shall be made
                 successively whenever any event listed above shall occur.

             (2) The Exercise Price in effect from time to time shall be also
                 adjusted to reflect any and all adjustments to the "Series E
                 Conversion Price" (as defined in the Amended and Restated
                 Articles of Incorporation of the Company (the "Articles")) as
                 calculated pursuant to subsection 4(e) of Part A of Paragraph 2
                 of Article 4 of the Articles. At any such time as all of the
                 Series E Convertible Participating Preferred Stock of the
                 Company (the "Series E Preferred Stock") is converted into
                 Common Stock, no further adjustments pursuant to this
                 subsection (2) shall be made. Any adjustments pursuant to
                 subsection (1) immediately preceding shall be taken into
                 account in making adjustments pursuant to this subsection. By
                 way of example, if the Series E Conversion Price is reduced to
                 $1.51, the Exercise Price shall be similarly reduced, but if
                 the adjustment to the Series E Conversion Price followed a 2
                 for 1 stock distribution, the resulting Exercise Price would be
                 $.755 per share.

             (3) Whenever the Exercise Price payable upon exercise of each
                 Warrant is adjusted pursuant to subsection (1) or (2) above,
                 the number of Warrant Shares purchasable upon exercise of the
                 Warrant shall simultaneously be adjusted by multiplying the
                 number of Warrant Shares issuable upon exercise

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                 of this Warrant by the Exercise Price in effect on the date
                 hereof and dividing the product so obtained by the Exercise
                 Price, as adjusted pursuant to subsection (1) or (2), as
                 appropriate.

             (4) No adjustment in the Exercise Price shall be required unless
                 such adjustment would require an increase or decrease of at
                 least $.05 in such price; provided, however, that any
                 adjustments which by reason of this subsection (f) (3) are not
                 required to be made shall be carried forward and taken into
                 account in any subsequent adjustment required to be made
                 hereunder.

             (5) Each computation required by this Section (f) for purposes of
                 determining whether the Exercise Price shall be adjusted, shall
                 be performed by the Company. Whenever the Exercise Price is
                 adjusted, as herein provided, the Company shall promptly cause
                 a notice setting forth the adjusted Exercise Price and adjusted
                 number of Warrant Shares issuable upon exercise of each Warrant
                 to be mailed to the Holder, at its address appearing in the
                 Warrant Register, and shall cause a certified copy thereof to
                 be mailed to its transfer agent, if any.

             (6) All calculations under this Section (f) shall be made to the
                 nearest cent or to the nearest Warrant Share, as the case may
                 be.

             (7) In the event that at any time, as a result of an adjustment
                 made pursuant to this Section (f) above, the Holder of this
                 Warrant thereafter shall become entitled to receive any shares
                 of the Company, other than Common Stock, thereafter the number
                 of such other shares so receivable upon exercise of this
                 Warrant shall be subject to adjustment from time to time in a
                 manner and on terms as nearly equivalent as practicable to the
                 provisions with respect to the Common Stock contained in
                 subsection (a) above.

             (8) Irrespective of any adjustments in the Exercise Price or the
                 number or kind of Warrant Shares purchasable upon exercise of
                 this Warrant, Warrants theretofore or thereafter issued may
                 continue to express the same price and number and kind of
                 shares as are stated in the similar Warrants initially issuable
                 pursuant to this Agreement.

          (g) OFFICER'S CERTIFICATE.  Whenever the Exercise Price shall be
adjusted as required by the provisions of the foregoing Section, the Company
shall forthwith file in the custody of its Secretary or an Assistant Secretary
at its principal office and with its stock transfer agent, if any, an officer's
certificate showing the adjusted Exercise Price determined as herein provided,
setting forth in reasonable detail the facts requiring such adjustment,
including a statement of the number of additional shares of Common Stock, if
any, and such other facts as shall be necessary to show the reason for and the
manner of computing such adjustment. Each

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such officer's certificate shall be made available at all reasonable times for
inspection by the Holder or any holder of a Warrant executed and/or delivered
pursuant to Section (a) or Section (d), and the Company shall, forthwith after
each such adjustment, mail, by certified mail, a copy of such certificate to the
Holder or any such holder.

          (h) NOTICES TO WARRANT HOLDERS.  So long as this Warrant shall be
outstanding, (i) if the Company shall pay any dividend or make any distribution
upon the Common Stock, or (ii) if the Company shall offer to the holders of
Common Stock for subscription or purchase by them any shares of any class or any
other rights, or (iii) if any capital reorganization of the Company,
reclassification of the capital stock of the Company, consolidation or merger of
the Company with or into another corporation, sale, lease or transfer of all or
substantially all of the property and assets of the Company to another
corporation, or voluntary or involuntary dissolution, liquidation or winding up
of the Company shall be effected, then in any such case, the Company shall cause
to be mailed by certified mail to the Holder or any holder of a Warrant executed
and/or delivered pursuant to Section (a) or Section (d), at least 15 days prior
to the date specified in (x) or (y) below, as the case may be, a notice
containing a brief description of the proposed action and stating the date on
which (x) a record is to be taken for the purpose of such dividend, distribution
or rights, or (y) such reclassification, reorganization, consolidation, merger,
conveyance, lease, dissolution, liquidation or winding up is to take place and
the date, if any is to be fixed, as of which the holders of Common Stock or
other securities shall receive cash or other property deliverable upon such
reclassification, reorganization, consolidation, merger, conveyance,
dissolution, liquidation or winding up.

          (i) RECLASSIFICATION OR REORGANIZATION. In case of any
reclassification or capital reorganization of outstanding shares of Common Stock
of the Company, or in case of any consolidation or merger of the Company with or
into another corporation (other than a merger with another corporation in which
merger the Company is the continuing corporation and which does not result in
any reclassification or capital reorganization of outstanding shares of Common
Stock of the class issuable upon exercise of this Warrant) or in case of any
sale, lease or conveyance to another corporation of the property of the Company
as an entirety, the Company shall, as a condition precedent to such transaction,
cause effective provisions to be made so that the Holder or any holder of a
Warrant executed and/or delivered pursuant to Section (a) or Section (d) shall
have the right thereafter by exercising the Warrant at any time prior to the
expiration of the Warrant, to purchase the kind and amount of shares of stock
and other securities and property receivable upon such reclassification or
capital reorganization and consolidation, merger, sale or conveyance.  Any such
provision shall include provision for adjustments which shall be as nearly
equivalent as may be practicable to the adjustments provided for in the Warrant.
The foregoing provisions of this Section (i) shall similarly apply to successive
reclassifications or capital reorganizations of shares of Common Stock and to
successive consolidations, mergers, sales or conveyances.  In the event that in
connection with any such capital reorganization or reclassification,
consolidation, merger, sale or conveyance, additional shares of Common Stock
shall be issued in exchange, conversion, substitution or payment, in whole or in
part, for a security of the Company other than Common Stock, any such issue
shall

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be treated as an issue of Common Stock covered by the provisions of subsection
(1) of Section (f) hereof.

             (j)  SECURITIES LAW COMPLIANCE

                    (1) The Holder of the Warrant, by acceptance hereof,
                    acknowledges that (i) THE WARRANT AND THE WARRANT SHARES
                    HAVE BEEN, OR WILL BE, AS APPLICABLE, ISSUED PURSUANT TO
                    EXEMPTIONS FOR NONPUBLIC OFFERINGS FROM THE REGISTRATION
                    REQUIREMENTS OF THE SECURITIES ACT OF 1933, AS AMENDED, AND
                    APPLICABLE STATE SECURITIES LAWS, AND, ACCORDINGLY, THESE
                    SECURITIES MAY NOT BE RESOLD OR OTHERWISE DISPOSED OF
                    UNLESS, IN THE OPINION OF COUNSEL FOR OR SATISFACTORY TO THE
                    ISSUER, REGISTRATION UNDER THE APPLICABLE FEDERAL OR STATE
                    SECURITIES LAWS IS NOT REQUIRED OR COMPLIANCE IS MADE WITH
                    SUCH REGISTRATION REQUIREMENTS; and (ii) the Warrant and the
                    Warrant Shares to be issued upon exercise hereof or
                    conversion thereof are being acquired solely for the
                    Holder's own account and not as a nominee for any other
                    party, and for investment, and that the Holder will not
                    offer, sell, transfer, assign or otherwise dispose of this
                    Warrant or any shares of Common Stock to be issued upon
                    exercise hereof or conversion thereof except under
                    circumstances that will not result in a violation of the
                    Securities Act of 1933, as amended (the "Act") or any state
                    securities laws. Upon exercise or other transfer of the
                    Warrant, the Holder shall, if requested by the Company,
                    confirm in writing, in a form satisfactory to the Company,
                    that the shares of Common Stock so purchased or transferred
                    are being acquired solely for the Holder's own account and
                    not as a nominee for any other party, for investment, and
                    not with a view toward distribution or resale.

                    (2) If appropriate, the Warrant and any Warrants issued upon
                    exercise or substitution or upon assignment or transfer
                    pursuant to Section (a) or Section (d), as the case may be,
                    and all shares of Common Stock issued upon exercise hereof
                    or conversion thereof shall be stamped or imprinted with
                    legends setting forth the restrictions on transfer arising
                    under applicable federal and state securities laws.

             (k) REGISTRATION RIGHTS UNDER THE SECURITIES ACT OF 1933

                    (1) Commencing the date hereof and continuing until the
                    earlier of (i) sale or disposition of the securities covered
                    hereunder in accordance with any registration statement
                    ("Registration Statement") filed pursuant to the Securities
                    Act of 1933, as amended (the "Act"), or (ii) the Holder may
                    sell or transfer the Warrant or Warrant Shares in accordance
                    with the requirements of Section (k) (or similar

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          provisions then in effect) of Rule 144 promulgated by the Securities
          and Exchange Commission under the Act, the Company shall advise the
          Holder of the Warrant or of the Warrant Shares or any then Holder of
          Warrants or Warrant Shares (such persons being collectively referred
          to herein as "Holders") by written notice (a "Registration Notice") at
          least 21 days prior to the filing of any Registration Statement or
          post-effective amendment thereto under the Act, covering an
          underwritten public offering of equity securities of the Company and
          shall register in any such Registration Statement the number of
          Warrant Shares that the Holder shall notify the Company within 10 days
          of such Holder's receipt of the Registration Notice that it desires to
          register and shall include in any such Registration Statement such
          information as may be required to permit a public offering of such
          Warrant Shares by the Company's underwriter(s). The Company shall
          supply prospectuses and other documents as the Holder may reasonably
          request in order to facilitate the public sale or other disposition of
          the Warrant Shares. The Company shall bear the entire cost and expense
          of a registration of securities initiated by it under this Paragraph
          (1). The Holder shall, however, bear the fees of its own counsel and
          any transfer taxes and underwriting discounts or commissions
          applicable to the Warrant Shares sold by it. The Company may include
          other securities in any such Registration Statement. The Company shall
          do any and all other acts and things which may be reasonably necessary
          or desirable to enable the Holder to consummate the public sale or
          other disposition of the Warrant Shares, and furnish indemnification
          in the manner as set forth in Paragraph (2) (a) of this Section (k),
          but shall not be required to qualify as a foreign corporation to
          qualify the Warrant Shares for sale under the securities laws of any
          state. The Holder shall furnish information and indemnification as set
          forth in Paragraph (2) (b) of this Section (k). All Holders whose
          securities are included in the public sale must sell their securities
          on the same terms and conditions as apply to the securities being
          issued and sold by the Company. All decisions as to whether and when
          to proceed with any Registration Statement shall be made solely by the
          Company, and the Company may delay or terminate any offering.

              Notwithstanding the foregoing paragraph, in the event that there
          is an underwritten offering of the Company's securities offered
          pursuant to said Registration Statement pursuant to the immediately
          preceding Paragraph, the underwriter(s) shall have the right to refuse
          to permit any Warrant Shares, or to limit the amount of Warrant
          Shares, to be sold by the Holder to such underwriter(s) as such
          underwriter(s) may determine in its discretion, and the Holder shall
          refrain from selling such remainder of its Warrant Shares covered by
          such registration statement for the period of 180 days following the
          effective date and shall also refrain at any time when notified by the
          Company that an amendment or supplement to the prospectus is required.
          The Company shall not be obligated to keep any Registration Statement
          effective for a total of more than 180 days.

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          (2) (a)  Whenever pursuant to this Section (k) a Registration
          Statement relating to the Warrant Shares is filed under the Act,
          amended or supplemented, the Company will indemnify and hold harmless
          each Holder of Warrant Shares covered by such Registration Statement,
          amendment or supplement (such Holder being hereinafter called the
          "Distributing Holder"), and each person, if any who controls (within
          the meaning of the Act) the Distributing Holder, against any losses,
          claims, damages or liabilities, joint or several, to which the
          Distributing Holder or any such controlling person may become subject,
          under the Act or otherwise, insofar as such losses, claims, damages or
          liabilities (or actions in respect thereof) arise out of or are based
          upon any untrue statement or alleged untrue statement of any material
          fact contained in any such Registration Statement or any preliminary
          prospectus or final prospectus constituting a part thereof or any
          amendment or supplement thereto, or arise out of or are based upon the
          omission to state therein a material fact required to be stated
          therein or necessary to make the statements therein not misleading;
          and will reimburse the Distributing Holder and each such controlling
          person for any legal or other expenses reasonably incurred by the
          Distributing Holder and each controlling person for any legal or other
          expenses reasonable incurred by the Distributing Holder or such
          controlling person or underwriter in connection with investigating or
          defending any such loss, claim, damage, liability or action; provided,
          however, that the Company will not be liable in any such case to the
          extent that any such loss, claim, damage or liability arises out of or
          is based upon an untrue statement or alleged untrue statement or
          omission or alleged omission made in said Registration Statement,
          preliminary prospectus, final prospectus or amendment or supplement,
          in reliance upon and in conformity with written information furnished
          by the Distributing Holder or underwriter for use in the preparation
          thereof.

          (b)  The Distributing Holder will indemnify and hold harmless the
          Company, each of its directors, each of its officers who have signed
          said Registration Statement and such amendments and supplements
          thereto, each person, if any, who controls the Company (within the
          meaning of the Act) and the Company's underwriter(s) and each person,
          if any, who controls such underwriter(s) (within the meaning of the
          Act) against any losses, claims, damages or liabilities to which the
          Company or any such director, officer, underwriter or controlling
          person may become subject, under the Act or otherwise, insofar as such
          losses, claims, damages or liabilities arise out of or are based upon
          any untrue or alleged untrue statement of any material fact contained
          in said Registration

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          Statement, preliminary prospectus, final prospectus, or amendment or
          supplement, or arise out of or are based upon the omission or the
          alleged omission to state therein a material fact required to be
          stated therein or necessary to make the statements therein not
          misleading, in each case to the extent, but only to the extent that
          such untrue statement or alleged untrue statement or omission or
          alleged omission was made in said Registration Statement, preliminary
          prospectus, final prospectus or amendment or supplement, in reliance
          upon and in conformity with written information furnished by such
          Distributing Holder for use in the preparation thereof; and will
          reimburse the Company or underwriter or any such director, officer or
          controlling person for any legal or other expenses reasonably incurred
          by them in connection with investigating or defending any such loss,
          claim, damage, liability or action.

          (c)  Promptly after receipt by an indemnified party under this
          Paragraph 2 of notice of the commencement of any action, such
          indemnified party will, if a claim in respect thereof is to be made
          against any indemnifying party, give the indemnifying party notice of
          the commencement thereof; but the omission so to notify the
          indemnifying party will not relieve it from any liability which it may
          have to any indemnified party otherwise than under this Paragraph 2.

          (d)  In case any such action is brought against any indemnified party,
          and it notifies an indemnifying party of the commencement thereof, the
          indemnifying party will be entitled to participate in, and, the extent
          that it may wish, jointly with any other indemnifying party similarly
          notified to assume the defense thereof, with counsel reasonably
          satisfactory to such indemnified party, and after notice from the
          indemnifying party to such indemnified party of its election so to
          assume the defense thereof, the indemnifying party will not be liable
          to such indemnified party under this Paragraph 2 for any legal or
          other expenses subsequently incurred by such indemnified party in
          connection with the defense thereof other than reasonable costs of
          investigation.

          (e)  The Company's agreements with respect to Warrant Shares in this
          Section (k) shall continue in effect regardless of the exercise or
          surrender of the Warrant.

     (l)  RIGHT TO CONVERT WARRANT INTO COMMON STOCK.

          (1)  Right to Convert.  The Holder shall have the right to require the
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          Company to convert this Warrant provided in this Section (1), into
          common stock (the "Net Conversion Right").  Upon exercise of the Net
          Conversion Right, the Company shall deliver to the Holder (without
          payment by the Holder of any Exercise Price or of any other cash or
          consideration) that number of shares of Common Stock equal to the
          quotient obtained by dividing (x) the value of this Warrant at the
          time the Conversion Right is exercised (determined by subtracting the
          aggregate Exercise Price in effect immediately prior to the exercise
          of the Conversion Right from the aggregate fair market value of the
          shares of Common Stock issuable upon exercise of this Warrant
          immediately prior to the exercise of the Conversion Right) by (y) the
          fair market value of one share of Common Stock immediately prior to
          the exercise of the Conversion Right.

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          (2)  Method of Exercise.  The Net Conversion Right may be exercised by
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          the Holder by the surrender of this Warrant at the principal office of
          the Company together with a written statement specifying that the
          Holder thereby intends to exercise the Net Conversion Right.
          Certificates for the shares of Common Stock issuable upon exercise of
          the Net Conversion Right shall be delivered to the Holder within five
          (5) days following the Company's receipt of this Warrant together with
          the aforesaid written statement.

          (3)  Determination of Fair Market Value.  For purposes of this Section
               ----------------------------------
          (f), fair market value of a share of Common Stock as of a particular
          date (the "Determination Date") shall be determined in accordance with
          Section (c) of this Warrant.

     (m)  AMENDMENTS.  Neither the Warrant nor any term hereof may be
changed, waived, discharged or terminated without the prior written consent of
the Holder.

     (n)  NO IMPAIRMENT.  The Company will not avoid or seek to avoid the
observance or performance of any of the terms to be observed or performed
hereunder by the Company, but will at all times in good faith assist in the
carrying out of all the provisions of this Warrant and in the taking of all such
action as may be necessary or appropriate in order to protect the rights of any
Holder.

     (o)  GOVERNING LAW.  This Agreement shall be governed by and
construed under the laws of the State of Delaware.

     (p)  NOTICES.  All notices and other communications required or
permitted hereunder shall be in writing and shall be mailed by first class mail,
postage prepaid, addressed (a) if to the Holder, to Deutsche Bank Securities
Inc., 1 South Street, Baltimore, Maryland 21202, Attention:  President, or (b)
if to the Company, to 676 North St. Clair Street, Suite 900, Chicago, Illinois
60611, Attention: Chief Executive Officer, or at such other address as to the
Company shall have furnished to the Holder in writing.

                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

                                      -11-
<PAGE>

          IN WITNESS WHEREOF, Open Port Technology, Inc. has caused this Warrant
to be executed by its officer thereunto duly authorized.

Dated:  October 22, 1999

                                    OPEN PORT TECHNOLOGY, INC.

                                    By:/s/ Randy S. Storch
                                       ____________________________
                                    Name: Randy S. Storch
                                          _________________________
                                    Title: Chief Executive Officer
                                           ________________________

<PAGE>

                                 PURCHASE FORM
                                 -------------

                                    Dated _______________, _____

          [The undersigned hereby irrevocably elects to exercise its rights
pursuant to this Warrant to the extent of purchasing ______ shares of Common
Stock of Open Port Technology, Inc., and hereby makes payment of $___________,
in cash, in payment of the exercise price thereof.]

          The undersigned hereby irrevocably elects to exercise its rights
pursuant to this Warrant to the extent of purchasing _____ shares of Common
Stock and hereby authorizes you to deliver such shares of Common Stock for sale
to ___________, and to retain from the proceeds of such sale $__________, in
cash, in payment of the exercise price thereof and to remit to the undersigned
the balance of such proceeds.

                               _________________

                     INSTRUCTIONS FOR REGISTRATION OF STOCK
                     --------------------------------------

Name___________________________________________________________________________
                 (Please typewrite or print in block letters)

Address________________________________________________________________________

Signature______________________________________________________________________

<PAGE>

                                ASSIGNMENT FORM
                                ---------------

FOR VALUE RECEIVED,____________________________________________________________
hereby sells, assigns and transfers unto

Name___________________________________________________________________________
                  (Please typewrite or print in block letters)

Address________________________________________________________________________

the right to purchase Common Stock of Open Port Technology, Inc. (the
"Company"), represented by this Warrant to the extent of __________ shares as to
which such right is exercisable and does hereby irrevocably constitute and
appoint _____________________________ as Attorney, to transfer the same on the
books of the Company with full power of substitution in the premises.

Date ___________, _____

Signature__________________________<PAGE>

                                                                    EXHIBIT 10.1

                                                  OPEN PORT TECHNOLOGY, INC.

                       1995 INCENTIVE STOCK OPTION PLAN

1.    Purpose
      -------

  The purpose of the Plan is to benefit the Company and its shareholders by
having the Company offer certain Employees a favorable opportunity to acquire
shares of Stock over a period of years, thereby giving such Employees a
permanent stake in the growth and prosperity of the Company, encouraging such
Employees to continue their service with the Company, and motivating such
Employees to devote their best efforts to the business and profitability of the
Company.  The Plan is not intended to qualify as an "employee stock purchase
plan" within the meaning of Code Section 423.

2.    Definitions
      -----------

  As used herein, the following definitions shall apply.

     2.1.    "Board" shall mean the Board of Directors of the Company, or a
committee appointed by the Board to perform all or some of the Board's duties
under this Plan.

     2.2.    "Code" shall mean the Internal Revenue Code of 1986, as amended.

     2.3.    "Company" shall mean Open Port Technology, Inc., an Illinois
corporation.
<PAGE>

     2.4.    "Date of Grant" shall mean the day and year written in the Option
Agreement relating to such Option.  The Date of Grant for an Option granted to
an Employee may be any date on or after the Employee's first day of employment
with the Company even if such date is prior to the effective date of this Plan.

     2.5.    "Director" shall mean any duly elected and qualified member of the
Board.

     2.6.    "Disability" shall mean any medically determinable physical or
mental impairment that, in the opinion of the Board, based upon medical reports
and other evidence satisfactory to the Board, can reasonably be expected to
prevent an Employee from performing substantially all of his customary duties of
employment for a continuous period of not less than twelve (12) months.

     2.7.    "Employee" shall mean any salaried employee of the Company.

     2.8.    "Exercise Price" shall mean the purchase price for shares of Stock
purchased pursuant to the exercise or partial exercise of an Option.

     2.9.    "Fair Market Value" shall mean, with respect to the valuation of
any shares of Stock, (i) if the Stock is publicly traded, the closing price of
the Stock on the trading day immediately preceding the business day during which
the shares of Stock are to be valued pursuant hereto, and (ii) if the Stock is
not publicly traded, the fair market value of the shares of Stock as reasonably
determined by the Board consistent with past practice.

     2.10.   "IPO" shall mean the closing of an initial public offering of the
common stock of the Company registered under the Securities Act.

                                       2
<PAGE>

     2.11.   "Option" shall mean any right to purchase Stock which has been
granted by the Board pursuant to the Plan.

     2.12.   "Option Agreement" shall mean an agreement executed by an officer
of the Company and an Employee evidencing the grant of an Option.

     2.13.   "Option Shares" shall mean the shares of Stock transferred pursuant
to the exercise of an Option.

     2.14.   "Optionee" shall mean any Employee who receives an Option pursuant
to the Plan.

     2.15.   "Plan" shall mean the Open Port Technology, Inc. 1995 Incentive
Stock Option Plan.

     2.16.   "Securities Act" shall mean the Securities Act of 1933, as amended.

     2.17.   "Stock" shall mean the no par value common stock of the Company.

3.    Shares Subject to the Plan
      --------------------------

  Except as provided in Section 4(a) hereof, the aggregate amount of Stock for
which Options may be granted shall not exceed 803,213 shares less (at the time
of the grant of any Option) all shares subject to any option granted under the
Open Port Technology, Inc. 1995 Non-Employee Stock Option Plan.

                                       3
<PAGE>

  Any shares subject to unexercised portions of Options which shall have
terminated, been canceled, or expired may again be made subject to Options.  In
addition, shares that have been repurchased by the Company may again be made
subject to Options.

4.    Adjustment
      ----------

     4.1.    The number of shares subject to the Plan and to Options shall be
adjusted as follows: (i) in the event that the number of shares of outstanding
Stock is changed by reason of a stock dividend, stock split, recapitalization or
combination of shares, the number of shares of Stock subject to the Plan and to
Options shall be proportionately adjusted; or (ii) in the event of any merger,
consolidation or reorganization of the Company with any other corporation or
corporations pursuant to which the holders of shares of Stock surrender shares
of Stock in exchange for other shares of stock or securities, there shall be
substituted for each share of Stock then subject to the Plan and to Options the
number and kind of shares of stock or other securities which the holders of
shares of Stock are entitled to receive for each share of Stock surrendered
pursuant to the transaction and the Exercise Price shall be proportionately
adjusted.

     4.2.    The number of shares subject to the Plan and Options shall not be
adjusted as a result of the issuance of shares of Stock by the Company (other
than an issuance described in subsection (a) of this Section 4), it being
understood that, upon such an issuance of shares of Stock, holders of Options
and holders of Option Shares will have a corresponding dilution of their
proportionate interests in the Stock.

                                       4
<PAGE>

5.    Administration of the Plan
      --------------------------

  The following provisions shall govern the administration of the Plan:

     5.1.    The Plan shall be administered by the Board.

     5.2.    The Board is authorized (but only to the extent not contrary to the
express provisions of the Plan) to interpret the Plan, to prescribe, amend and
rescind rules and regulations relating to the Plan and to the Options, to
determine the form and content of Options (except to the extent the form and
content of the Options are specified herein), and to make such other
determinations and exercise such other powers and authority as may be necessary
or advisable for the administration of the Plan.  Each Option granted shall be
evidenced by an Option Agreement in such form as may be determined by the Board.

     5.3.     A majority of the members of the Board eligible to act shall
constitute a quorum for purposes of acting with respect to the Plan, and the
action of a majority of the members present who are eligible to act at any
meeting at which a quorum is present shall be deemed the action of the Board.

     5.4.    All decisions, determinations and interpretations of the Board made
in good faith with respect to the Plan and Option Agreements shall be final and
conclusive on all persons affected thereby.

     5.5.    Neither the Board nor any member thereof shall be liable for any
act, omission, interpretation, construction or determination made in connection
with the Plan in good faith, and the members of the Board shall be entitled to
indemnification and reimbursement by the Company in respect of any claim, loss,
damage or expense (including counsel fees) arising therefrom to the full extent
permitted by law.

                                       5
<PAGE>

     5.6.    The aggregate fair market value of the Option Shares (determined as
of the Date of Grant) for which any Employee may be granted an Option or Options
which will first be exercisable in any single calendar year, taking account of
any special vesting provisions provided in an Option Agreement, may not exceed
$100,000.

6.    Eligibility
      -----------

  The Board is authorized to select Employees to receive Options depending on
the availability of shares of Stock for which Options may be granted pursuant to
the terms of the Plan.  In the event Options are granted pursuant to the Plan,
the Board is authorized to select the particular Employees who will receive such
Options and the number of shares of Stock under each such Option.  In granting
Options, the Board shall take into consideration the contribution an Employee
has made or may make to the success of the Company and such other factors as the
Board shall determine.  In no event shall any Employee or his or her legal
representatives, heirs, legatees, distributees or successors have any right to
participate in the Plan except to such extent, if any, as the Board shall
determine.  No Options will be granted to any Employee who owns stock
representing more than ten percent (10%) of the voting power of all classes of
stock of the Company or any parent or subsidiary corporation unless the Exercise
Price is at least one hundred ten percent (110%) of the Fair Market Value at the
Date of Grant.

7.    Term of the Plan
      ----------------

  The Plan shall continue in effect until terminated pursuant to Section 20
hereof; or until there is no more stock as to which an Option may be granted and
no Options are outstanding; provided, however, that all Options must be granted
within 10 years from the effective date of the Plan.

8.    Restrictions on Transfers
      -------------------------

     8.1.    The Options may not be transferred, assigned, pledged or
hypothecated in any way and will not be subject to execution, attachment or
similar process,

                                       6
<PAGE>

except as provided by this Plan and except by will or under the laws of descent
and distribution (subject to the repurchase option described in Section 18
hereof).

     8.2.    The Option Shares may not be transferred, assigned, pledged or
hypothecated, voluntarily, involuntarily or by operation of law, except as
provided by this Plan and any Option Agreement pertaining to such Options.

     8.3.    An Option will terminate immediately upon any attempted transfer,
assignment, pledge or hypothecation of such Option in violation of this Section
8, and any attempted transfer, assignment, pledge or hypothecation of any Option
Shares in violation of this Section 8 will be void without further action by the
Company and have no effect.

9.    Restrictions on Voting
      ----------------------

  Until the occurrence of an IPO, Option Shares will be voted by the then chief
executive officer of the Company, pursuant to irrevocable proxies in the form
attached hereto as Exhibit B, executed by the Optionee upon the exercise of an
Option.

10.    Vesting of Options
       ------------------

  Options are exercisable only upon and after vesting.  Except as provided in
Section 11 hereof and except as otherwise may be specifically provided in an
Option Agreement, Options shall vest according to the following schedule:

     10.1.  as to one-fifth (1/5) of the Option Shares on the first anniversary
of the Date of Grant;

                                       7
<PAGE>

     10.2.  as to an additional one-fifth (1/5) of the Option Shares on the
second anniversary of the Date of Grant; and

     10.3.  as to an additional one-fifth (1/5) of the Option Shares on the
third anniversary of the Date of Grant;

     10.4.  as to an additional one-fifth (1/5) of the Option Shares on the
fourth anniversary of the Date of Grant; and

     10.5.  as to the remaining one-fifth (1/5) of the Option Shares on the
fifth anniversary of the Date of Grant.

  The above vesting schedule assumes the Optionee's continuous employment with
the Company.  No Option or part thereof shall vest after the date the Optionee
ceases to be an Employee for any reason, and any unvested portion of an Option
theretofore held by such an Optionee shall terminate as of that date.

11.    Special Vesting Provisions
       --------------------------

  In the event of the proposed dissolution or liquidation of the Company, the
Option will terminate immediately prior to the consummation of such proposed
action, unless otherwise provided by the Board.  The Board may, in the exercise
of its sole discretion in such instances, declare that any Option shall
terminate as of a date fixed by the Board and give each Optionee the right to
exercise his or her Option as to all or any part of the Optioned Stock,
including Shares as to which the Option would not otherwise be exercisable.  In
the event of a proposed sale of all or substantially all of the assets of the
Company, or the merger of the Company with or into another corporation, the
Board may provide for the Optionee to have the right to exercise the Option as
to all of the Option Stock, including Shares as to which the Option would not
otherwise be exercisable.  The Board may notify the Optionee that the Option
shall be fully exercisable and the Option will terminate upon the consummation
of such sale or merger.

                                       8
<PAGE>

12.    When Options May Be Exercised
       -----------------------------

     12.1.    Except as provided in subsections (b) and (c) of this Section 12,
a vested Option or the vested portion of an Option, shall be exercised, if at
all, by the Optionee at any time before the tenth anniversary of its Date of
Grant.

     12.2.    If an Optionee ceases to be an Employee for any reason, such
Optionee's vested Options must be exercised, if at all, not later than thirty
(30) days following the date such Optionee ceases to be an Employee. Any
unvested portion of an Option shall terminate immediately upon the cessation of
employment of the Optionee holding the Option.

     12.3.    In the event of the occurrence of any of the events described in
Section 11 hereof and the adoption by the Board of a resolution providing for
the exercise of the rights provided to the Board under Section 11 hereof, the
vested Options shall not be exercisable after the occurrence of such event.  The
Company shall notify all Optionees of any such impending sale.  With respect to
any Optionee that desires to exercise the vested portion of his or her Option
prior to such event, the Company may instead pay such Optionee the excess of the
amount received or to be received for the Option Shares over the amount that
would have been received from such Optionee upon the exercise of the vested
portion of such Option.

     12.4.    Unless the Optionee desires to forego the benefit of the Option
being considered an incentive stock option under Section 422 of the Code, no
Option or any part thereof may be exercised by the Optionee while there is
outstanding any incentive stock option which was granted by the Company to the
Optionee at an earlier time.

13.    Exercise Price
       --------------

  The Exercise Price shall be $1.62 per share for Options granted on or before
the earlier of (i) the adoption by the Board of a resolution changing the
Exercise Price or (ii) an IPO.

                                       9
<PAGE>

At all times, when established, the Exercise Price shall be equal to or greater
than the Fair Market Value.

14.    Exercise of Option
       ------------------

  During the Optionee's lifetime, Options shall be exercisable only by the
Optionee or his legal representative or guardian.  Options shall not be
exercisable by the spouse of any Optionee during such Optionee's lifetime,
unless such spouse is acting in his or her capacity as the legal representative
or guardian of the Optionee.  In the event of the Optionee's death, the Option
shall be exercisable by the person or entity (including the Optionee's estate)
that has obtained the Optionee's rights under the Option by will or under the
laws of descent and distribution.

  Options shall be exercised if at all, by submitting to the Company (a) a
Notice of Exercise in the form attached hereto as Exhibit A, (b) the Irrevocable
Proxy, duly executed, (c) any other written representations, covenants, and
undertakings that the Company may prescribe pursuant to the Shareholders
Agreements or to satisfy securities laws and regulations or other requirements,
and (d) a certified or bank cashier's check payable to the order of the Company
in an amount equal to the full purchase price of the shares to be purchased.

  Upon receipt of the Notice of Exercise (subject to Sections 15, 16, and 17 of
this Agreement), the Company shall issue a new certificate or certificates to
the holder of the Option.  The certificate or certificates for the shares as to
which the Option shall have been exercised shall be registered in the name of
the holder of the Option and shall be delivered to or upon the written order of
the holder of the Option.  The shares shall bear a legend substantially in the
following form:

     "THE SHARES SUBJECT TO THIS CERTIFICATE ARE SUBJECT TO
     TRANSFER AND VOTING RESTRICTIONS SET FORTH IN THE OPEN PORT
     TECHNOLOGY, INC. 1995 INCENTIVE STOCK OPTION PLAN (THE
     "PLAN"). COPIES OF THE PLAN ARE ON FILE IN THE OFFICE OF THE
     SECRETARY OF THE CORPORATION. BY ACCEPTING THE SHARES OF
     STOCK EVIDENCED BY THIS CERTIFICATE, THE HOLDER AGREES TO BE
     BOUND BY THE PLAN AS IT MAY BE AMENDED FROM TIME TO TIME."

                                       10
<PAGE>

15.    Securities Law Restrictions
       ---------------------------

  The Company shall not be obligated to issue any stock certificates evidencing
a transfer upon exercise of an Option, until, in the opinion of the Company and
its counsel, such transfer and issuance of stock certificates will not involve
any violation of applicable federal and state securities laws, the rules and
regulations promulgated thereunder, and the requirements of any stock exchange
upon which the Stock may then be listed.  Acceptance of an Option by an Optionee
shall constitute the Optionee's agreement (binding on any person who succeeds to
the Optionee's rights and obligations under the Option Agreement by reason of
the Optionee's death) that, if the Stock is not publicly traded as of the date
the Option is exercised, any shares of Stock purchased upon the exercise of the
Option shall be acquired for the Optionee's own account and not with a view to
distribution and that each notice of the exercise of any portion of the Option
shall be accompanied by a written representation and covenant signed by the
Optionee, in such form as may be specified by the Company, confirming such
agreement and containing such other provisions as may be prescribed by the
Company.  The Company may, at its election, release an Optionee from the
Optionee's agreement to take for the Optionee's own account and not with a view
to distribution of the shares of Stock purchased upon exercise of an Option if,
in the opinion of the Company, such covenant ceases to be necessary for
compliance with the applicable federal and state securities laws (including the
rules and regulations promulgated thereunder) and the requirements of any stock
exchange upon which the Stock may then be listed.

  If the shares purchased upon exercise of an Option are not covered by an
effective registration statement under the Securities Act, the Company may place
the following legend (or a legend which is substantially similar to the
following legend) upon, and issue appropriate stock transfer instructions with
respect to, the certificate or certificates representing the shares transferred
upon exercise of the Option:

     "THE SHARES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN
     REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE
     "SECURITIES ACT"), OR ANY APPLICABLE STATE SECURITIES LAWS
     (THE STATE LAWS"), AND SUCH SHARES MAY NOT BE TRANSFERRED
     UNLESS (A) A REGISTRATION STATEMENT UNDER THE SECURITIES ACT
     AND APPLICABLE STATE LAWS COVERING SUCH TRANSFER IS THEN IN
     EFFECT; OR (B) AN OPINION OF COUNSEL, SATISFACTORY TO THE
     CORPORATION, HAS BEEN FURNISHED STATING THAT SUCH

                                       11
<PAGE>

     TRANSFER IS EXEMPT FROM THE REGISTRATION REQUIREMENTS OF THE
     SECURITIES ACT AND APPLICABLE STATE LAWS."

16.    Listing or Registration of Stock
       --------------------------------

  Each Option is subject to the requirement that, if at any time the Board shall
determine, in its discretion, that the listing, registration or qualification of
the shares of Stock subject to the Option upon any securities exchange or under
any state or federal law, or the consent or approval of any government
regulatory body, is necessary or desirable as a condition of, or in connection
with, the granting or exercise of the Option or the issuance or purchase of
shares under the Option, the Option may not be exercised in whole or in part
until such listing, registration, qualification, consent or approval shall have
been effected or obtained free of any conditions not acceptable to the Board.
The Company shall be under no obligation to effect or obtain any such listing,
registration, qualification, consent or approval if the Board shall determine,
in its discretion, that such action would not be in the best interests of the
Company.  The Company shall not be liable for damages due to a delay in the
delivery or issuance of any stock certificates for any reason whatsoever,
including, but not limited to, a delay caused by listing, registration or
qualification of the shares of Stock subject to an Option under any securities
exchange or under any federal or state law, or by the effecting or obtaining of
any consent or approval of any governmental body with respect to the granting or
exercise of the Option or the issue or purchase of shares under the Option.

17.    Withholding of Taxes
       --------------------

  The Board may make such provisions and take such steps as it may deem
necessary or appropriate for the withholding of any taxes which the Company is
required by any law or regulation of any governmental authority, whether
federal, state or local, domestic or foreign, to withhold in connection with any
Option, including, but not limited to, the withholding of the issuance of all or
any portion of the shares of Stock subject to the Option until the holder of the
Option reimburses the Company for the amount required to be withheld with
respect to such taxes, canceling any portion of the issuance of the shares of
Stock subject to the Option in an amount sufficient to reimburse the Company for
such amount, deducting from the Optionee's wages an amount sufficient to
reimburse the Company for such amount, or taking any other action reasonably
required to satisfy the withholding obligation of the Company.

                                       12
<PAGE>

18.    Repurchase Option
       -----------------

  The Options and Option Shares are subject to the rights of the Company to
repurchase or acquire the Option Shares upon the occurrence of certain events,
including but not limited to: death or disability of the Optionee; cessation of
employment with the Company for any reason; or a transfer of the Option or
Option Shares, voluntarily, involuntarily or by operation of law.  The terms of
this repurchase option with respect to Option Shares shall be set forth in the
Option Agreement pertaining to such Options.

19.    Modification of Options
       -----------------------

  At any time and from time to time the Board may provide for the modification,
extension, or renewal of any outstanding Option, provided that no such
modification, extension or renewal shall impair the Option in any respect
without the consent of the holder of the Option.

20.    Amendment and Termination of the Plan
       -------------------------------------

  The Board may provide for the alteration, suspension or discontinuation of the
Plan, except that no such action may increase the benefits accruing to Employees
under the Plan, increase (other than as provided in Section 4(a) hereof) the
maximum number of shares permitted to be issued upon the exercise of Options, or
materially modify the requirements as to eligibility for participation in the
Plan unless such action is subject to approval by the shareholders of the
Company.

21.    Shareholder Rights
       ------------------

  A holder of an Option shall have none of the rights of a shareholder with
respect to the shares of Stock subject to the Option until the transfer of such
shares to him or her has been duly recorded on the stock transfer books of the
Company upon the exercise of the Option.

                                       13
<PAGE>

22.    Continued Employment Not Presumed
       ---------------------------------

  Nothing in the Plan or any document describing it nor the grant of an Option
shall give any Optionee the right to continue in employment with the Company or
affect the right of the Company to terminate the employment of any Optionee with
or without cause.

                                       14
<PAGE>

23.    Effective Date
       --------------

  The foregoing Open Port Technology, Inc. 1995 Incentive Stock Option Plan is
hereby adopted by the Company as of October 19, 1995.

                                   Open Port Technology, Inc.

                                        /s/ Randy S. Storch
                                   By:  ------------------------------

                                        Randy S. Storch, President

                                       15
<PAGE>

                                   EXHIBIT A

                                      TO

                          OPEN PORT TECHNOLOGY, INC.

                       1995 INCENTIVE STOCK OPTION PLAN

                              NOTICE OF EXERCISE

               (to be executed only upon exercise of the Option)

  Reference is made to the Open Port Technology, Inc. 1995 Incentive Stock
Option Agreement, dated as of ___________________ _____, 1995 (the "Option
Agreement"), between Open Port Technology, Inc., an Illinois corporation (the
"Company"), and  _____________________________________ (the "Optionee").
Capitalized terms used herein and not otherwise defined have the meanings
assigned to such terms in the Option Agreement.

     23.1.    The Optionee hereby irrevocably exercises the option for and
purchases _______________ shares of Stock.

     23.2.    The full purchase price for the shares of Stock being purchased
hereunder, calculated in accordance with the Option Agreement, is
$_______________, and the Optionee is delivering to the Company simultaneously
with the delivery of this Notice of Exercise a certified or bank cashier's check
payable to the order of the Company in such amount.

     23.3.    The shares of Stock being purchased hereunder are being acquired
for the Optionee's own account and not with a view to distribution thereof in
violation of applicable Federal or state securities laws.
<PAGE>

     23.4.    The Optionee requests that certificates for the shares of Stock
being purchased hereunder be issued in the name of and delivered to the Optionee
at the following address:

                           _________________________
                           _________________________
                           _________________________
                           _________________________

                                       2
<PAGE>

     Dated as of ____________________    ______________________________

                                         (Signature)

                                         ______________________________

                                         (Name)

                                         ______________________________

                                         (Signature of Spouse)

                                         ______________________________

                                         (Name)

                                       3
<PAGE>

                                   EXHIBIT B

                                      TO

                  OPEN PORT TECHNOLOGY, INC. (the "Company")

                 1995 INCENTIVE STOCK OPTION PLAN (the "Plan")

                               IRREVOCABLE PROXY

  The undersigned hereby revokes any previous proxies and irrevocably appoints
Randy S. Storch (the "Proxyholder") and his successor, pursuant to the Plan as
the proxy of the undersigned to attend any and all meetings of the shareholders
of the Company, and any adjournments or postponements of such meetings
(collectively, a "Meeting"), to vote for and in the name, place and stead of the
undersigned at any Meeting all shares of common stock, no par value per share
(the "Stock"), owned by the undersigned on the date of this proxy and any other
shares of Stock hereafter acquired by the undersigned (collectively, the "Proxy
Shares"), to execute written consents to corporate action, and to represent and
otherwise act for the undersigned on any and all matters with the same force and
effect as if the undersigned were personally present at such meeting or were
executing such consent.

  This proxy is coupled with an interest and is expressly made irrevocable and
will be effective until the earliest to occur of (i) the consummation of an
initial public offering by the Company that is registered under the Securities
Act of 1933, as amended or (ii) the expiration of ten (10) years from the
execution date hereof.  The undersigned acknowledges that monetary damages would
be an inadequate remedy for a breach of the provisions of this proxy and that
(in addition to any other remedy available at law) the obligations of the
undersigned and the rights of the Proxyholder are specifically enforceable.

  The undersigned authorizes the Proxyholder to substitute any other person or
entity to act under this proxy, to revoke any such substitution, and to file
this proxy and any substitution or revocation of this proxy with the Secretary
of the Company.

     Dated as of ____________________      ______________________________

                                           (Signature)

                                       4
<PAGE>

                                        ______________________________

                                        (Name)

                                        ______________________________

                                        (Signature of Spouse)

                                        ______________________________

                                        (Name)

                                       5
<PAGE>

                             AMENDMENT NUMBER ONE

                                      TO

                          OPEN PORT TECHNOLOGY, INC.

                       1995 INCENTIVE STOCK OPTION PLAN

     1.  Reference to Plan
         -----------------

     Reference is hereby made to that certain Open Port Technology, Inc. 1995
Incentive Stock Option Plan; as used herein, the term "Plan" shall refer to the
Plan as modified by this Amendment.  The terms used herein which are defined in
the Plan shall have the meanings provided for in the Plan, unless otherwise
defined herein.  Except as expressly modified hereby, all of the terms and
provisions of the Plan shall continue in full force and effect.  A copy of this
Amendment shall be attached to and made a part of the Plan.

     2.  Amendment to Section 2(g) of the Plan
         ---------------------------- --------

     Section 2(g) of the Plan is hereby amended so as to read in its entirety as
follows:

          (g) "Employee" shall mean any salaried employee of the Company or of
     any "Parent" or "Subsidiary" of the Company (as such terms are defined in
     Section 424 of the Code); any references to employment with the Company,
     shall be deemed to include the Company and any Parent or Subsidiary of the
     Company, as the context may require.

     3.  Effective Date
         --------------

     This Amendment to the Plan is hereby adopted by the Committee as of the 1st
day of February, 1996.

                                                      Open Port Technology, Inc.
<PAGE>

                             AMENDMENT NUMBER TWO

                                      TO

                          OPEN PORT TECHNOLOGY, INC.

                       1995 INCENTIVE STOCK OPTION PLAN

     1.  Reference to Plan
         -----------------

         Reference is hereby made to that certain Open Port Technology, Inc.
1995 Incentive Stock Option Plan, as amended by Amendment Number One to the Open
Port Technology, Inc. 1995 Incentive Stock Option Plan dated as of February 1,
1996; as used herein, the term "Plan" shall refer to the Plan as modified by
Amendment Number One and by this Amendment. The terms used herein which are
defined in the Plan shall have the meanings provided for in the Plan, unless
otherwise defined herein. Except as expressly modified hereby, all of the terms
and provisions of the Plan shall continue in full force and effect. A copy of
this Amendment shall be attached to and made a part of the Plan.

     2.  Amendment to Section 2(q) of the Plan
         -------------------------------------

         Section 2(q) of the Plan is hereby amended so as to read in its
entirety as follows:

               (q)  "Stock" shall mean the common stock, par value $.001 per
         share, of the Company.

     3.  Amendment to Section 10 of the Plan
         -----------------------------------

         Section 10 of the Plan is hereby amended so as to read in its entirety
as follows:
<PAGE>

                    Options are exercisable only upon and after vesting. Except
          as provided in Section 11 hereof and except as otherwise may be
          specifically authorized by the Board and provided in an Option
          Agreement, Options shall vest according to the following schedule:

               (a)  as to one-fourth (1/4th) of the Option Shares, on the first
                    anniversary of the Date of Grant; and

               (b)  as to an additional one-thirty-sixth (1/36th) of the Option
                    Shares, on the same calendar month day as the Date of Grant
                    occurring in each of the thirty-six (36) calendar months
                    occurring after the first anniversary of the Date of Grant.

                    The above vesting schedule assumes the Optionee's continuous
          employment with the Company. No Option or part thereof shall vest
          after the date the Optionee ceases to be an Employee for any reason,
          and any unvested portion of an Option theretofore held by such an
          Optionee shall terminate as of that date.

     4.  Effective Date
         --------------

         This Amendment to the Plan is hereby adopted by the Board as of the
30th day of April, 1996.

                                            Open Port Technology, Inc.

                                       2

<PAGE>

                            AMENDMENT NUMBER THREE

                                      TO

                          OPEN PORT TECHNOLOGY, INC.

                       1995 INCENTIVE STOCK OPTION PLAN

     1.  Reference to Plan
         -----------------

     Reference is hereby made to that certain Open Port Technology, Inc. 1995
Incentive Stock Option Plan, as amended by Amendment Number One to the Open Port
Technology, Inc. 1995 Incentive Stock Option Plan, dated as of February 1, 1996,
and Amendment Number Two to Open Port Technology, Inc. 1995 Incentive Stock
Option Plan.  As used herein, the term "Plan" shall refer to the Open Port
Technology, Inc 1995 Incentive Stock Option Plan as modified by Amendment Number
One, Amendment Number Two, and by this Amendment Number Three.  The terms used
herein which are defined in the Plan shall have the meanings provided for in the
Plan, unless otherwise defined herein.  Except as expressly modified hereby, all
of the terms and provisions of the Plan shall continue in full force and effect.
A copy of this Amendment Number Three shall be attached to and made a part of
the Plan.

     2.  Amendment to Section 3 of the Plan
         ----------------------------------

     The first paragraph of Section 3 of the Plan is hereby amended so as to
read in its entirety as follows:

          Except as provided in Section 4(a) hereof, the aggregate amount of
     Stock for which Options may be granted shall not exceed 3,682,695 shares
     (based on the capitalization of the Company existing as of January 1, 1997)
     less (at the time of the grant of any Option) all shares subject to any
     option granted under the Option Port Technology, Inc. 1995 Non-Employee
     Stock Option Plan, as amended.

     3.  Effective Date
         --------------
<PAGE>

     This Amendment Number Three to the Plan is hereby adopted by the Board as
of February 6, 1997 and approved by the shareholders of the Company as of
February 11, 1997.

                                                  Open Port Technology, Inc.

                                       2

<PAGE>

                             AMENDMENT NUMBER FOUR
                                      TO
                          OPEN PORT TECHNOLOGY, INC.
                       1995 INCENTIVE STOCK OPTION PLAN

24.  Reference to Plan
     -----------------

     Reference is hereby made to that certain Open Port Technology, Inc. 1995
Incentive Stock Option Plan, as amended by Amendment Number One to the Open Port
Technology, Inc. 1995 Incentive Stock Option Plan, dated as of February 1, 1996,
Amendment Number Two to Open Port Technology, Inc. 1995 Incentive Stock Option
Plan, dated as of April 30, 1996, and Amendment Number Three to Open Port
Technology Stock Option Plan, dated as of February 11, 1997.  As used herein,
the term "Plan" shall refer to the Open Port Technology, Inc. 1995 Incentive
Stock Option Plan as modified by Amendment Number One, Amendment Number Two,
Amendment Number Three and by this Amendment Number Four.  The terms used herein
which are defined in the Plan shall have the meanings provided for in the Plan,
unless otherwise defined herein.  Except as expressly modified hereby, all of
the terms and provisions of the Plan shall continue in full force and effect.  A
copy of this Amendment Number Four shall be attached to and made a part of the
Plan.

25.  Amendment to Section 2 of the Plan
     ----------------------------------

     Section 2 of the Plan is hereby amended by adding the following new
paragraph (r) at the end thereof:

          (r)  "Change of Control Event" shall mean, and be deemed to have
               occurred:  (i) upon the acquisition at any time (excluding any
               acquisition in connection with any public offering of equity
               securities of the Company pursuant to a registration statement
               filed under the Securities Act) by a "person" or "group" (as used
               in Sections 13(d) and 14(d)(2) of the Securities Exchange Act of
               1934, as amended (the "Exchange Act")) (excluding, for this
               purpose, the Company or any Subsidiary or any employee benefit
               plan of the Company or any Subsidiary) of the beneficial
               ownership (as defined in Rule 13d-3 promulgated under the
               Exchange Act), directly or indirectly, of securities representing
               fifty percent (50%) or more of the combined voting power of the
               then-outstanding securities of the Company; or (ii) in the event
               that the Board or the shareholders of the Company shall approve a
               merger, share exchange (other than a merger or share exchange
               with a wholly-owned subsidiary), consolidation, or sale or other
               disposition of substantially all of the assets of the Company, as
               a
<PAGE>

               result of which immediately following such transaction the
               shareholders of the Company shall not hold, directly or
               indirectly, a majority of the voting power of the then-
               outstanding securities of: (A) in the case of a merger or
               consolidation, the surviving or resulting corporation; (B) in the
               case of a share exchange, the acquiring corporation; or (C) in
               the case of a sale or other disposition of substantially all of
               the assets, each surviving, resulting or acquiring corporation
               which, immediately following the transaction, holds fifty percent
               (50%) or more of the assets of the Company.

26.  Amendment of Section 11 of the Plan
     -----------------------------------

     Section 11 of the Plan is hereby amended by adding the following new
paragraph at the end of thereof:

          Further, notwithstanding anything to the contrary in Section 10 or
     this Section 11, upon the occurrence of a Change of Control Event, with
     respect to each Option, if three (3) years has not elapsed since the Date
     of Grant, then the vesting of the Option shall be accelerated so that any
     portion of the Option that would have vested within three (3) years from
     the Date of Grant, shall automatically vest as of the date of the Change of
     Control Event.  The remaining unvested portion shall continue to vest
     according to above schedule (as if three (3) years had elapsed since the
     Date of Grant).

27.  Amendment of Section 18 of the Plan
     ------------------------------------
     Section 18 of the Plan is hereby amended so as to read in its entirety as
follows:

          The Options and the Option Shares are subject to the rights of the
     Company to repurchase or acquire the Option Shares upon the occurrence of
     certain events, including but not limited to:  a transfer of the Option or
     Option Shares, voluntarily, involuntarily or by operation of law or
     cessation of employment with the Company for any reason, but excluding in
     any instance upon the occurrence of a Change of Control Event.  The terms
     of this repurchase option with respect to Option Shares shall be set forth
     in the Option Agreement pertaining to such Options.

28.  Effective Date
     --------------
     This Amendment Number Four to the Plan is hereby adopted by the Board as of
the 20th day of November, 1997.

                                                  Open Port Technology, Inc.

                                       2

<PAGE>

                             AMENDMENT NUMBER FIVE
                                      TO
                          OPEN PORT TECHNOLOGY, INC.
                       1995 INCENTIVE STOCK OPTION PLAN

29.  Reference to Plan
     -----------------

     Reference is hereby made to that certain Open Port Technology, Inc. 1995
Incentive Stock Option Plan, as amended by Amendment Number One to the Open Port
Technology, Inc. 1995 Incentive Stock Option Plan, dated as of February 1, 1996,
Amendment Number Two to Open Port Technology, Inc. 1995 Incentive Stock Option
Plan, dated as of April 30, 1996, Amendment Number Three to Open Port Technology
Stock Option Plan, dated as of February 11, 1997, and Amendment Number Four to
Open Port Technology Stock Option Plan, dated as of November 20, 1997.  As used
herein, the term "Plan" shall refer to the Open Port Technology, Inc. 1995
Incentive Stock Option Plan as modified by Amendment Number One, Amendment
Number Two, Amendment Number Three, Amendment Number Four, and this Amendment
Number Five.  The terms used herein which are defined in the Plan shall have the
meanings provided for in the Plan, unless otherwise defined herein.  Except as
expressly modified hereby, all of the terms and provisions of the Plan shall
continue in full force and effect.  A copy of this Amendment Number Five shall
be attached to and made a part of the Plan.

30.  Amendment to Section 3 of the Plan
     ----------------------------------

     The first paragraph of Section 3 of the Plan is hereby amended so as to
read in its entirety as follows:

          Except as provided in Section 4(a) hereof, the aggregate amount of
     Stock for which Options may be granted shall not exceed 4,432,695 shares
     (based on the capitalization of the Company existing as of January 1, 1997)
     less (at the time of the grant of any Option) all shares subject to any
     option granted under the Open Port Technology, Inc. 1995 Non-Employee Stock
     Option Plan, as amended.

31.  Effective Date
     --------------

     This Amendment Number Five to the Plan is hereby adopted by the Board as of
the 23rd day of April, 1998 and approved by the Shareholders of the Company as
of June 15, 1998.

                                                  Open Port Technology, Inc.
<PAGE>

                             AMENDMENT NUMBER SIX
                                      TO
                          OPEN PORT TECHNOLOGY, INC.
                       1995 INCENTIVE STOCK OPTION PLAN

32.  Reference to Plan
     -----------------

     Reference is hereby made to that certain Open Port Technology, Inc. 1995
Incentive Stock Option Plan, as amended by Amendment Number One to the Open Port
Technology, Inc. 1995 Incentive Stock Option Plan, dated as of February 1, 1996,
Amendment Number Two to Open Port Technology, Inc. 1995 Incentive Stock Option
Plan, dated as of April 30, 1996, Amendment Number Three to Open Port Technology
Stock Option Plan, dated as of February 11, 1997, Amendment Number Four to Open
Port Technology Stock Option Plan, dated as of November 20, 1997, and Amendment
Number Five to Open Port Technology Stock Option Plan, dated as of June 15,
1998.  As used herein, the term "Plan" shall refer to the Open Port Technology,
Inc. 1995 Incentive Stock Option Plan as modified by the foregoing Amendments
and this Amendment Number Six.  The terms used herein which are defined in the
Plan shall have the meanings provided for in the Plan, unless otherwise defined
herein.  Except as expressly modified hereby, all of the terms and provisions of
the Plan shall continue in full force and effect.  A copy of this Amendment
Number Six shall be attached to and made a part of the Plan.

33.  Amendment to Section 14 of the Plan
     -----------------------------------

     The second paragraph of Section 14 of the Plan is hereby amended so as to
read in its entirety as follows:

          Options shall be exercised if at all, by submitting to the Company (a)
     a Notice of Exercise in the form attached hereto as Exhibit A, (b) the
     Irrevocable Proxy, duly executed, (c) any other written representations,
     covenants, and undertakings that the Company may prescribe pursuant to the
     Shareholders Agreements or to satisfy securities laws and regulations or
     other requirements, and (d) a certified or bank cashier's check payable to
     the order of the Company, or any other form of payment determined to be
     acceptable by the Board, in its sole discretion, in an amount equal to the
     full purchase price of the shares to be purchased.

34.  Amendment to Exhibit A to the Plan
     ----------------------------------

     Paragraph (b) of Exhibit A to the Plan is hereby amended so as to read in
its entirety as follows:

          (b) The full purchase price for the shares of Stock being purchased
     hereunder, calculated in accordance with the Option Agreement, is
     $____________, and the Optionee is delivering to the Company simultaneously
<PAGE>

     with the delivery of this Notice of Exercise a certified or bank
     cashier's check payable to the order of the Company in such amount,
     or any other form of payment determined to be acceptable by the
     Board, in its sole discretion.

35.  Effective Date
     --------------

     This Amendment Number Six to the Plan is hereby adopted by the Board as of
the 31st day of July, 1998.

                                          Open Port Technology, Inc.

                                       2

<PAGE>

                           AMENDMENT NUMBER SEVEN TO
                          OPEN PORT TECHNOLOGY, INC.
                       1995 INCENTIVE STOCK OPTION PLAN

36.  Reference to Plan
     -----------------

     Reference is hereby made to that certain Open Port Technology, Inc. 1995
Incentive Stock Option Plan (the "Plan"), as amended by Amendment Number One to
the Plan, dated as of February 1, 1996, Amendment Number Two to the Plan, dated
as of April 30, 1996, Amendment Number Three to the Plan, dated as of February
11, 1997, Amendment Number Four to the Plan, dated as of November 20, 1997,
Amendment Number Five to the Plan, dated as of June 15, 1998 and Amendment
Number Six to the Plan, dated as of July 31, 1998.  As used herein, the term
"Plan" shall refer to the Open Port Technology, Inc. 1995 Incentive Stock Option
Plan as modified by Amendment Number One, Amendment Number Two, Amendment Number
Three, Amendment Number Four, Amendment Number Five, Amendment Number Six and
this Amendment Number Seven.  The terms used herein which are defined in the
Plan shall have the meanings provided for in the Plan, unless otherwise defined
herein.  Except as expressly modified hereby, all of the terms and provisions of
the Plan shall continue in full force and effect.  A copy of this Amendment
Number Seven shall be attached to and made a part of the Plan.

37.  Amendment to Section 3 of the Plan
     ----------------------------------
     The first paragraph of Section 3 of the Plan is hereby amended so as to
read in its entirety as follows:

          Except as provided in Section 4(a) hereof, the aggregate amount
     of Stock for which Options may be granted shall not exceed 5,432,695
     shares (based on the capitalization of the Company existing as of
     January 1, 1997) less (at the time of the grant of any Option) all
     shares subject to any option granted under the Open Port Technology,
     Inc. 1995 Non-Employee Stock Option Plan, as amended.

38.  Effective Date
     --------------
     This Amendment Number Seven to the Plan is hereby adopted by the Board as
of October 29, 1998 and approved by the Shareholders of the Company as of
February 8, 1999.

                                             Open Port Technology, Inc.
<PAGE>

                           AMENDMENT NUMBER EIGHT TO
                          OPEN PORT TECHNOLOGY, INC.
                       1995 INCENTIVE STOCK OPTION PLAN

39.  Reference to Plan
     -----------------

     Reference is hereby made to that certain Open Port Technology, Inc. 1995
Incentive Stock Option Plan (the "Plan"), as amended by Amendment Number One to
the Plan, dated as of February 1, 1996, Amendment Number Two to the Plan, dated
as of April 30, 1996, Amendment Number Three to the Plan, dated as of February
11, 1997, Amendment Number Four to the Plan, dated as of November 20, 1997,
Amendment Number Five to the Plan, dated as of June 15, 1998, Amendment Number
Six to the Plan, dated as of July 31, 1998, and Amendment Number Seven to the
Plan, dated as of February 8, 1999.  As used herein, the term "Plan" shall refer
to the Open Port Technology, Inc. 1995 Incentive Stock Option Plan as modified
by Amendment Number One, Amendment Number Two, Amendment Number Three, Amendment
Number Four, Amendment Number Five, Amendment Number Six, Amendment Number Seven
and this Amendment Number Eight.  The terms used herein which are defined in the
Plan shall have the meanings provided for in the Plan, unless otherwise defined
herein.  Except as expressly modified hereby, all of the terms and provisions of
the Plan shall continue in full force and effect.  A copy of this Amendment
Number Eight shall be attached to and made a part of the Plan.

40.  Amendment to Section 3 of the Plan
     ----------------------------------
     The first paragraph of Section 3 of the Plan is hereby amended so as to
read in its entirety as follows:

          Except as provided in Section 4(a) hereof, the aggregate amount
     of Stock for which Options may be granted shall not exceed 8,432,695
     shares (based on the capitalization of the Company existing as of
     January 1, 1997) less (at the time of the grant of any Option) all
     shares subject to any option granted under the Open Port Technology,
     Inc. 1995 Non-Employee Stock Option Plan, as amended.

41.  Effective Date
     --------------
     This Amendment Number Eight to the Plan is hereby adopted by the Board as
of January 27, 2000 and approved by the Shareholders of the Company as of
November, 1999.

                                             Open Port Technology, Inc.
<PAGE>

                           AMENDMENT NUMBER NINE TO
                          OPEN PORT TECHNOLOGY, INC.
                       1995 INCENTIVE STOCK OPTION PLAN

42.  Reference to Plan
     -----------------

     Reference is hereby made to that certain Open Port Technology, Inc. 1995
Incentive Stock Option Plan (the "Plan"), as amended by Amendment Number One to
the Plan, dated as of February 1, 1996, Amendment Number Two to the Plan, dated
as of April 30, 1996, Amendment Number Three to the Plan, dated as of February
11, 1997, Amendment Number Four to the Plan, dated as of November 20, 1997,
Amendment Number Five to the Plan, dated as of June 15, 1998, Amendment Number
Six to the Plan, dated as of July 31, 1998, Amendment Number Seven to the Plan,
dated as of February 8, 1999 and Amendment Number Eight to the Plan, dated as of
January 27, 2000.  As used herein, the term "Plan" shall refer to the Open Port
Technology, Inc. 1995 Incentive Stock Option Plan as modified by Amendment
Number One, Amendment Number Two, Amendment Number Three, Amendment Number Four,
Amendment Number Five, Amendment Number Six, Amendment Number Seven, Amendment
Number Eight and this Amendment Number Nine.  The terms used herein which are
defined in the Plan shall have the meanings provided for in the Plan, unless
otherwise defined herein.  Except as expressly modified hereby, all of the terms
and provisions of the Plan shall continue in full force and effect.  A copy of
this Amendment Number Nine shall be attached to and made a part of the Plan.

43.  Amendment to Section 3 of the Plan
     ----------------------------------

     The first paragraph of Section 3 of the Plan is hereby amended so as to
read in its entirety as follows:

          Except as provided in Section 4(a) hereof, the aggregate amount
     of Stock for which Options may be granted shall not exceed 9,732,695
     shares (based on the capitalization of the Company existing as of
     January 1, 1997) less (at the time of the grant of any Option) all
     shares subject to any option granted under the Open Port Technology,
     Inc. 1995 Non-Employee Stock Option Plan, as amended.

44.  Effective Date
     --------------

     This Amendment Number Nine to the Plan is hereby adopted by the Board as of
March 24, 2000 and approved by the Shareholders of the Company as of March 24,
2000.

                                             Open Port Technology, Inc.
<PAGE>

                            AMENDMENT NUMBER TEN TO
                           OPEN PORT TECHNOLOGY, INC
                       1995 INCENTIVE STOCK OPTION PLAN

1.   Reference to Plan
     -----------------

     Reference is hereby made to that certain Open Port Technology, Inc. 1995
Incentive Stock Option Plan (the "Plan"), as amended by Amendment Number One to
the Plan, dated as of February 1, 1996, Amendment Number Two to the Plan, dated
as of April 30, 1996, Amendment Number Three to the Plan, dated as of February
11, 1997, Amendment Number Four to the Plan, dated as of November 20, 1997,
Amendment Number Five to the Plan, dated as of June 15, 1998, Amendment Number
Six to the Plan, dated as of July 31, 1998, Amendment Number Seven to the Plan,
dated as of February 8, 1999, Amendment Number Eight to the Plan, dated as of
January 27, 2000, and Amendment Number Nine to the Plan, dated as of March 24,
2000. As used herein, the term "Plan" shall refer to the Open Port Technology,
Inc. 1995 Incentive Stock Option Plan as modified by Amendment Number One,
Amendment Number Two, Amendment Number Three, Amendment Number Four, Amendment
Number Five, Amendment Number Six, Amendment Number Seven, and Amendment Number
Eight and Amendment Number Nine. The terms used herein which are defined in the
Plan shall have the meanings provided for in the Plan, unless otherwise defined
herein. Except as expressly modified hereby, all of the terms and provisions of
the Plan shall continue in full force and effect. A copy of this Amendment
Number Ten shall be attached to and made part of the Plan.

2.   Amendments to Section 2 of the Plan
     -----------------------------------

     Section 2 of the Plan is hereby amended by amending paragraph (l) so as to
read in its entirety as follows:

          (l)  "Option Agreement" shall mean an agreement executed by an officer
     of the Company and an Employee evidencing the grant of an Option, as it may
     be amended, modified, extended or renewed from time to time, subject to
     Section 19.

     Section 2 of the Plan is hereby further amended by amending paragraph (r)
so as to read in its entirety as follows:

     (r)  "Change of Control Event" means, unless otherwise defined for a
          particular Optionee in an Option Agreement or in an employment
          agreement between the Company and such Optionee which addresses the
          effect of a Change of Control Event (as therein defined) on benefits
          hereunder, shall mean, and be deemed to have occurred:

          (i)  upon the acquisition at any time (excluding any acquisition in
               connection with any public offering of equity securities of the
               Company pursuant to a registration statement filed under the
               Securities Act) by a person or group (as used in Sections 13(d)
               and 14(d)(2) of the Securities Exchange Act of
<PAGE>

               1934, as amended (the "Exchange Act"), excluding for this
               purpose, the Company or any Subsidiary or any employee benefit
               plan of the Company or any Subsidiary) of the beneficial
               ownership (as defined in Rule 13d-3 promulgated under the
               Exchange Act), directly or indirectly, of securities representing
               fifty percent (50%) or more of the combined voting power of the
               then-outstanding securities of the Company; except that no Change
               of Control shall be deemed to have occurred solely by reason of
               such beneficial ownership (A) by a corporation of which fifty
               percent (50%) or more of the beneficial ownership is then held,
               directly or indirectly, in substantially the same proportions by
               the persons who held the beneficial ownership of the Company
               immediately before such acquisition, or (B) resulting directly
               from an issuance of Stock by the Company to such person; or

          (ii) the approval by the Board or the shareholders of the Company of a
               merger, share exchange (other than a merger or share exchange
               with a wholly-owned subsidiary), consolidation, reorganization,
               or similar transaction, or a plan or agreement for the sale or
               other disposition of all or substantially all of the consolidated
               assets of the Company or a plan of liquidation of the Company, as
               a result of which immediately following such transaction the
               shareholders of the Company shall not hold, directly or
               indirectly, a majority of the voting power of the then-
               outstanding securities of the surviving, resulting or acquiring
               corporation (or in the case of a sale or other disposition of
               assets, of each surviving, resulting or acquiring corporation
               which immediately after the transaction holds fifty percent (50%)
               of the former assets of the Company).

3.   Amendment to Section 7 of the Plan
     ----------------------------------

     Section 7 of the Plan is hereby amended so as to read in its entirety as
follows:

          The Plan shall continue in effect until terminated pursuant to Section
     20 hereof, or until there is no more Stock as to which an Option may be
     granted and no Options are outstanding; provided, however, that all Options
     must be granted within 10 years from the effective date of the Plan, and no
     Options shall be granted under the Plan after an IPO.

4.   Amendments to Section 8 of the Plan
     -----------------------------------

     Section 8 of the Plan is hereby amended so as to read in its entirety as
follows:

          (a)  The Options may not be transferred, assigned, pledged or
     hypothecated in any way and will not be subject to execution, attachment or
     similar process, except as provided by this Plan and except by will or
     under the laws of descent and distribution, or pursuant to a domestic
     relations order issued by a court of competent jurisdiction, or by
     designation of beneficiary pursuant to subsection (c) of this Section 8,
     and except as may

                                       2
<PAGE>

     be permitted by an Option Agreement in accordance with subsection (d) of
     this Section 8, and subject to the repurchase option described in Section
     18 hereof.

          (b)  Prior to an IPO the Option Shares may not be transferred,
     assigned, pledged or hypothecated, voluntarily or involuntarily or by
     operation of law, except as provided by this Plan and any Option Agreement
     pertaining to such Options.

          (c)  Each Optionee under the Plan may, from time to time, name any
     beneficiary or beneficiaries (who may be an individual or a trust and who
     may be named contingently or successively) to exercise on such
     beneficiary's behalf any Options that are outstanding and exercisable after
     the death of the Optionee. Each such designation shall revoke all prior
     designations by the same Optionee, shall be in a form prescribed by the
     Company, and will be effective only when filed by the Optionee in writing
     with the Company during the Optionee's lifetime. In the absence of any such
     designation, the Option to the extent outstanding and exercisable after the
     death of an Optionee may be exercised by his or her executors,
     administrators, legatees or distributees of his or her estate as determined
     under his or her will or by the laws of descent and distribution. If an
     Option is exercised by the executors, administrators, legatees or
     distributees of the estate of a deceased Optionee or by the guardian or
     legal representative of a Optionee, the Company shall be under no
     obligation to issue Stock thereunder unless and until it is satisfied that
     the person or persons exercising the Option are the duly appointed
     beneficiary or legal representatives of the Optionee or of the deceased
     Optionee's estate or the proper legatees or distributees of such estate.

          (d)  If the Option Agreement so provides and the Optionee consents to
     foregoing the benefits of the Option being considered an incentive stock
     option under Section 422 of the Code, then notwithstanding subsection (a)
     above, an Optionee may transfer an Option in the manner prescribed by the
     Board, and subject to such terms and conditions as may be prescribed by the
     Board, to any Permissible Transferee (as defined below). For purposes of
     this Plan, "Permissible Transferee" means any member of the Immediate
                 ----------------------
     Family (as defined below) of the Optionee to whom such Option was granted,
     any trust the primary beneficiaries of which consist exclusively of the
     Optionee or members of the Optionee's Immediate Family or any corporation,
     partnership or similar entity, the owners of which consist exclusively of
     the Optionee or members of the Optionee's Immediate Family. For purposes of
     this Section, "Immediate Family" means such Optionee's spouse, children,
                    ----------------
     nieces, nephews, grandchildren, great grandchildren, stepchildren, parents,
     stepparents, grandparents, siblings, half siblings, and the spouses of such
     individuals.

          (e)  An Option will terminate immediately upon any attempted transfer,
     assignment, pledge or hypothecation of such Option in violation of this
     Section 8, and any attempted transfer, assignment, pledge or hypothecation
     of any Option Shares in violation of this Section 8 will be void without
     further action by the Company and have no effect.

5.   Amendment to Section 11 of the Plan
     -----------------------------------

                                       3
<PAGE>

     The last paragraph of Section 11 of the Plan is hereby amended so as to
read in its entirety as follows:

          Further, notwithstanding anything to the contrary in Section 10 or
     this Section 11, but subject to any different provision for a particular
     Optionee in an Option Agreement or in an employment agreement between the
     Company and such Optionee which addresses the effect of a Change in Control
     Event (as therein defined) on benefits hereunder, upon the occurrence of a
     Change in Control Event, with respect to each Option, if three (3) years
     has not elapsed since the Date of Grant, then the vesting of the Option
     shall be accelerated so that any portion of the Option that would have
     vested within three (3) years from the Date of Grant shall automatically
     vest as of the date of the Change of Control Event. The remaining unvested
     portion shall continue to vest according to the above schedule (as if three
     (3) years had elapsed since the Date of Grant).

6.   Amendments to Section 12 of the Plan
     ------------------------------------

     Section 12(b) of the Plan is hereby amended so as to read in its entirety
as follows:

          (b)  Unless otherwise provided for a particular Optionee in an Option
     Agreement and which may distinguish among reasons for termination of
     employment, (i) any unvested portion of an Option shall terminate
     immediately upon the cessation of employment for any reason of the Optionee
     holding the Option, and (ii) if an Optionee ceases to be an Employee for
     any reason, such Optionee's vested Options must be exercised, if at all,
     not later than thirty (30) days following the date such Optionee ceases to
     be an Employee.

     Section 12(d) of the Plan is hereby deleted.

7.   Amendment to Section 14 of the Plan
     -----------------------------------

     Section 14 of the Plan is hereby amended so as to read in its entirety as
follows:

          Except to the extent provided in an Option Agreement which permits
     transfer of Options pursuant to Section 8(d), during the Optionee's
     lifetime Options shall be exercisable only by the Optionee or his legal
     representative or guardian. Options shall not be exercisable by the spouse
     of any Optionee during such Optionee's lifetime, unless such spouse is
     acting in his or her capacity as the legal representative or guardian or a
     permissible transferee under such Option Agreement, of the Optionee. In the
     event of the Optionee's death, the Option shall be exercisable by the
     person or entity (including the Optionee's estate) that has obtained the
     Optionee's rights under the Option by designation of beneficiary, by will
     or under the laws of descent and distribution, or by such permitted
     transfer.

          Options shall be exercised, if at all, by submitting to the Company
     (a) a Notice of Exercise in the form attached hereto as Exhibit A, (b) if
     exercise occurs prior to an IPO, the Irrevocable Proxy, duly executed, (c)
     any other written representations, covenants and undertakings that the
     Company may prescribe pursuant to any shareholders agreements or

                                       4
<PAGE>

     to satisfy securities laws and regulations or other requirements, and (d)
     full payment for the Option Stock made by cash, personal check or wire
     transfer or, subject to the approval of the Board, any one or more of the
     following means:

               (i)  Shares of Stock that have been held by the Optionee for at
          least six months or purchased by the Optionee on the open market
          ("Mature Shares"), valued at their Fair Market Value on the date of
          exercise;

               (ii) pursuant to procedures approved by the Board, through the
          sale of the Stock acquired on exercise of the Option through a broker-
          dealer to whom the Optionee has submitted an irrevocable notice of
          exercise and irrevocable instructions to deliver promptly to the
          Company the amount of sale or loan proceeds sufficient to pay for such
          Stock, together with, if requested by the Company, the amount of
          federal, state, local or foreign withholding taxes payable by Optionee
          by reason of such exercise.

     If Mature Shares are used to pay the Exercise Price, then if requested by
     the Secretary or Assistant Secretary of the Company, the Optionee shall
     deliver to the Secretary or Assistant Secretary the agreement evidencing
     the Option and the Optionee's certificate that such shares have been held
     by the Optionee for at least six months or were purchased on the open
     market and such certificate shall identify the number of shares of Stock
     and the stock certificate or other document or notation which evidences
     such stock ownership.  The number of Mature Shares being so used and the
     number of shares of Stock purchased upon exercise may be evidenced by a
     notation on the agreement and the agreement shall be returned to the
     Optionee.  No fractional shares of Stock (or cash in lieu of fractional
     shares) shall be issued upon exercise of an Option and the number of shares
     of Stock that may be purchased upon exercise shall be rounded to the
     nearest number of whole shares.

          Upon receipt of the Notice of Exercise (subject to Sections 15, 16 and
     17 of this Plan), the Company shall issue a new certificate of certificates
     to the holder of the Option. The certificate or certificates for the shares
     as to which the Option shall have been exercised shall be registered in the
     name of the holder of the Option and shall be delivered to or upon the
     written order of the holder of the Option. If the shares are issued before
     an IPO the shares shall bear a legend in substantially the following form:

          "THE SHARES SUBJECT TO THIS CERTIFICATE ARE SUBJECT TO TRANSFER AND
          VOTING RESTRICTIONS SET FORTH IN THE OPEN PORT TECHNOLOGY, INC. 1995
          INCENTIVE STOCK OPTION PLAN (THE "PLAN"). COPIES OF THE PLAN ARE ON
          FILE IN THE OFFICE OF THE SECRETARY OF THE CORPORATION.  BY ACCEPTING
          THE SHARES OF STOCK EVIDENCED BY THIS CERTIFICATE, THE HOLDER AGREES
          TO BE BOUND BY THE PLAN AS IT MAY BE AMENDED FROM TIME TO TIME."

          Whenever under the Plan, shares are to be delivered upon exercise of
     an Option the Company shall be entitled to require (x) that the Optionee
     remit an amount in cash, or

                                       5
<PAGE>

     if determined by the Board, Mature Shares, sufficient to satisfy all
     federal, state, local and foreign tax withholding requirements related
     thereto ("Required Withholding"), (y) the withholding of such Required
     Withholding from compensation otherwise due to the Optionee or from any
     shares due to the Optionee under the Plan or (z) any combination of the
     foregoing.

          Any Optionee who makes a disposition not described in Section
     422(a)(i) of the Code of Option Shares acquired under an incentive stock
     option shall remit to the Company an amount sufficient to satisfy all
     resulting Required Withholding; provided that, in lieu of or in addition to
     the foregoing, the Company shall have the right to withhold such Required
     Withholding from compensation otherwise due to the Optionee or from any
     shares or other payment due to the Optionee under the Plan.

8.   Amendments to Section 18 of the Plan
     ------------------------------------

     Section 18 of the Plan is hereby amended to read in its entirety as
follows:

          The Options and the Option Shares are subject to the rights of the
     Company to repurchase or acquire the Option Shares upon the occurrence of
     certain events, including but not limited to: a transfer of the Option or
     Option Shares, voluntarily, involuntarily or by operation of law or
     cessation of employment with the Company for any reason, but excluding in
     any instance upon the occurrence of a Change of Control Event or after an
     IPO. The terms of this repurchase option with respect to the Option Shares
     shall be set forth in the Option Agreement pertaining to such Options.

9.   Amendments to Section 20 of the Plan
     ------------------------------------

     Section 20 is amended to read as follows:

          The Board may provide for the alteration, suspension or
     discontinuation of the Plan, except that no such action may increase (other
     than as provided in Section 4(a) hereof) the maximum number of shares
     permitted to be issued upon the exercise of Options, or materially modify
     the requirements as to eligibility for participation in the Plan, unless
     such action is subject to approval by the shareholders of the Company.

10.  Effective Date
     --------------

     This Amendment Number Ten to the Plan is hereby adopted by the Board as of
April 3, 2000 subject to approval by the Shareholders of the Company.

                                             Open Port Technology, Inc.

                                       6

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