Document:

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                                                                     EXHIBIT 4.5

THE SECURITIES REPRESENTED BY THIS WARRANT HAVE NOT BEEN REGISTERED UNDER THE
SECURITIES ACT OF 1933, AS AMENDED, OR ANY STATE SECURITIES LAWSKristine
HackfeldFinancial Printing GroupTHE SECURITIES REPRESENTED BY THIS WARRANT HAVE
NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR ANY STATE
SECURITIES LAWS.  SUCH SECURITIES MAY NOT BE OFFERED, SOLD OR TRANSFERRED IN THE
ABSENCE OF REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND ANY
APPLICABLE STATE SECURITIES LAWS OR AN OPINION OF COUNSEL SATISFACTORY TO THE
COMPANY THAT SUCH REGISTRATION IS NOT REQUIRED.

                                 WARRANT

                      OUTREACH COMMUNICATIONS CORPORATION
                  (hereinafter referred to as the "Company")
             Incorporated Under the Laws of the State of Delaware

     Right to purchase twenty thousand three hundred (20,300) shares of the
Company's $.001 par value Common Stock (the "Common Stock") at a price of one
cent ($.01) per share (or such other number as determined hereunder) exercisable
at any time in whole or in part, on or before the expiration date hereof as set
forth herein.

     THIS CERTIFIES THAT, for value received, Gerald Youngblood (hereinafter the
"Holder"), is entitled to purchase and receive the aforementioned number of
shares of the stock of the Company at the time of exercise upon payment of the
aforementioned price per share.

     This Warrant shall expire on the tenth (10th) anniversary date hereof.

     This Warrant shall be registered on the books of the Company, which shall
be kept at its principal office for that purpose and shall be transferable in
whole or in part only on said books by the registered holder hereof in person or
by duly authorized attorney.

     The Warrant shall not entitle the Holder to any of the rights of a
shareholder of the Company.

     This Warrant may be exercised in whole or in part at any time or times on
or before the expiration date above mentioned.

     This Warrant shall be exercised by delivery (for notation in the case of
partial exercise or surrender in the case of total exercise) of this Warrant
together with the Subscription Agreement attached hereto as Addendum A at the
principal office of the Company prior to the expiration hereof and upon payment
to the Company of the aggregate price (or the proportionate part thereof if
exercised in part) for the shares so purchased.

     If all or any portion of this Warrant shall be exercised subsequent to any
stock dividend, split-up, recapitalization, merger, consolidation, combination
or exchange of shares, separation, reorganization or liquidation of the Company
occurring after the date hereof, as a result of which
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shares of any class shall be issued in respect of outstanding shares of Common
Stock of the Company (or shall be issuable in respect of securities convertible
into shares of Common Stock) or upon exercise of rights (other than this
Warrant) to purchase shares of Common Stock or shares of such Common Stock shall
be changed into the same or a different number of shares of the same or another
class or classes, the holder exercising this Warrant shall receive, for the
aggregate price paid upon such exercise, the aggregate number and class of
shares which such holder would have received if this Warrant had been exercised
immediately prior to such stock dividend, split-up, recapitalization, merger,
consolidation, combination or exchange of shares, separation, reorganization or
liquidation.

     Neither this Warrant nor the shares issuable upon exercise of this Warrant
have been registered under the Securities Act of 1933 (the "Act"), as amended,
or any applicable "Blue Sky" laws and, therefore, the transfer of such
securities is restricted by the Act and applicable Blue Sky laws.  By acceptance
of this Warrant, the Holder represents and warrants to the Company that this
Warrant is acquired for the Holder's own account, for investment and not with a
view to distribution within the meaning of the Act and the Holder agrees that
the Holder will not offer, distribute, sell, transfer or otherwise dispose of
this Warrant or the shares issuable upon exercise of this Warrant except
pursuant to (i) an effective registration statement under the Act and any
applicable Blue Sky laws with respect thereto, or (ii) an opinion, satisfactory
to the Company, addressed to the Company, of counsel satisfactory to the
Company, that such offering, distribution, sale, transfer or disposition is
exempt from registration under the Act and any applicable Blue Sky laws, or
(iii) a letter from the staff of the Securities and Exchange Commission or any
state securities commissioner, as the case may be, to the effect that it will
recommend that no action be taken with respect to such transaction.  The Holder
agrees, by acceptance of this Warrant, to execute any and all documents deemed
necessary by the Company and required by the regulatory authority of any state
in connection with any public offering by the Company of its securities.
Subject to the restrictions set forth above, the right to purchase all or any
part of the shares granted by this Warrant shall be assignable or transferable,
in whole or in part, by the Holder.  If this Warrant is assigned, this Warrant
shall be surrendered at the principal office of the Company with a written form
of assignment satisfactory to the Company duly executed.  Such assignment or
transfer shall confer upon such assignee or transferee all rights and benefits
granted to the Holder under this Warrant, subject to the obligations and
limitations herein contained, and the Company shall execute and deliver to such
assignee or transferee a new Warrant in the same form and substance as this
Warrant.

     IN WITNESS WHEREOF, the Company has caused this Warrant to be duly executed
and delivered effective as of February 1, 1997.

                              Outreach Communications Corporation,
                              a Delaware corporation

                              By: /s/ R. C. Estes
                                 -------------------------------------
                                      R. C. Estes, Chief Executive Officer
<PAGE>

                                 ADDENDUM A

                            SUBSCRIPTION AGREEMENT

          (Subscription Form to be Executed Upon Exercise of Warrant)

     The undersigned, holder or assignee of such holder of the within Warrant,
hereby (1) subscribes for shares of stock which the undersigned is entitled to
purchase under the terms of the within Warrant, and (2) directs that the stock
issuable upon exercise of said Warrant be issued and delivered to the following
named person(s), payment of the exercise price to be made on delivery as
follows:

Date:
      --------------------               ------------------------------
                                         Name

                                         Address:

                                         -------------------------------
                                         -------------------------------

                                         -------------------------------
                                         Signature

                                  ASSIGNMENT

(To be executed by the registered holder to effect a transfer of the within
Warrant)

     FOR VALUE RECEIVED, (name) hereby sell(s), assign(s) and transfer(s) unto
(name) the right to purchase Common Stock evidenced by the within Warrant, and
do(es) hereby irrevocably constitute and appoint _________ to transfer the said
right on the books of the Company, with full power of substitution.

Date:
     ----------------------              ---------------------------------
                                         Signature<PAGE>

                                                                     EXHIBIT 4.6

THE SECURITIES REPRESENTED BY THIS INSTRUMENT HAVE NOT BEEN REGISTERED UNDER THE
SECURITIES ACT OF 1933, AS AMENDED, OR QUALIFIED UNDER APPLICABLE STATE
SECURITIES LAWS AND HAVE BEEN TAKEN FOR INVESTMENT PURPOSES ONLY AND NOT WITH A
VIEW TO OR FOR SALE IN CONNECTION WITH ANY DISTRIBUTION THEREOF. THE SECURITIES
MAY NOT BE SOLD OR OTHERWISE TRANSFERRED IN THE ABSENCE OF SUCH REGISTRATION AND
QUALIFICATION WITHOUT, EXCEPT UNDER CERTAIN SPECIFIC LIMITED CIRCUMSTANCES, AN
OPINION OF COUNSEL FOR THE HOLDER, CONCURRED IN BY COUNSEL FOR THE COMPANY THAT
SUCH REGISTRATION AND QUALIFICATION ARE NOT REQUIRED.

                            CLEARCOMMERCE CORPORATION

                             STOCK PURCHASE WARRANT

    THIS CERTIFIES that Imperial Bank (the "Holder") is entitled, upon the terms
                                            ------
and subject to the conditions hereinafter set forth, at any time on or after the
date of this Warrant and on or prior to February 28, 2004 (the "Expiration
                                                                ----------
Date"), but not thereafter, to subscribe for and purchase from ClearCommerce
----
Corporation a Delaware corporation (the "Company"), 14,144 Shares (as
                                         -------
hereinafter defined). "Shares" shall be the Company's Series C Preferred Stock.
The "Exercise Price" shall be $7.07 per Share. This Warrant is being issued in
     --------------
conjunction with termination of that certain First Amendment to the Credit
Agreement and Promissory Note and Forbearance dated as of September 14, 1999.

1.   Exercise of Warrant.
     -------------------

         (a) Unless earlier terminated under Section 8, the purchase rights
represented by this Warrant are exercisable by the Holder, in whole or in part,
at any time after the date hereof and before the close of business on the
Expiration Date, by the surrender of this Warrant and the Notice of Exercise
annexed hereto duly executed at the principal executive office of the Company
(or such other office or agency of the Company as it may designate by notice in
writing to the Holder at the address of the Holder appearing on the books of the
Company), and upon payment of the Exercise Price of the Shares thereby purchased
(by cash or by check or bank draft payable to the order of the Company in an
amount equal to the Exercise Price of the shares thereby purchased); whereupon
the Holder shall be entitled to receive a certificate for the number of Shares
so purchased. The Company agrees that if at the time of the surrender of this
Warrant and purchase of the Shares, the Holder shall be entitled to exercise
this Warrant, the Shares so purchased shall be and be deemed to be issued to
such holder as the record owner of such Shares as of the close of business on
the date on which this Warrant shall have been exercised as aforesaid.

         (b) Certificates for Shares purchased hereunder shall be delivered to
the Holder within a reasonable time after the date on which this Warrant shall
have been exercised as aforesaid.

         (c) The Company covenants that all Shares that may be issued upon the
exercise of rights represented by this Warrant will, upon exercise of the rights
represented by this Warrant, be
<PAGE>

fully paid and nonassessable and free from all taxes, liens and charges in
respect of the issue thereof (other than taxes in respect of any transfer
occurring contemporaneously with such issue).

2.   Net Exercise.

     (a) In lieu of exercising this Warrant by payment of cash or check, the
Holder may elect to receive shares equal to the value of this Warrant (or the
portion thereof being exercised), at any time after the date hereof and before
the close of business on the Expiration Date, by surrender of this Warrant at
the principal executive office of the Company, together with the Notice of
Conversion annexed hereto, in which event the Company will issue to the Holder
Shares in accordance with the following formula:

                                     Y(A-B)
                                     ------
                           X      =     A

    Where,        X    =   the number of Shares to be issued to Holder;

                  Y    =   the number of Shares for which the Warrant is being
                           exercised;

                  A    =   the fair market value of one Share; and

                  B    =   the Exercise Price.

     (b) For purposes of this Section 2, the fair market value of a Share is
defined as follows:

         (i) if the exercise is in connection with an initial public offering of
the Common Stock, and if the Company's registration statement relating to such
offering has been declared effective by the Securities and Exchange Commission,
then the fair market value shall be the initial "Price to Public" specified in
the final prospectus with respect to the offering;

         (ii) if the exercise is in connection with a transaction described in
Section 8, then the fair market value shall be the value received pursuant to
such transaction as determined in good faith by the board of directors of the
Company;

         (iii) if the exercise occurs after, and not in connection with the
Company's initial public offering, and:

              (1) if traded on a securities exchange or the Nasdaq Stock Market,
the value shall be deemed to be the average of the closing prices of the
securities on such exchange or market over the 20-day period ending three (3)
days prior to the closing of such transaction; or

              (2) if actively traded over-the-counter, the value shall be deemed
to be the average of the closing bid prices over the 30-day period ending three
(3) days prior to the closing of such transaction;

                                       2
<PAGE>

              (iv) if there is no active public market, the value shall be the
fair market value thereof, as determined in good faith by the board of directors
of the Company.

     3. No Fractional Shares or Scrip. No fractional shares or scrip
        -----------------------------
representing fractional shares shall be issued upon the exercise of this
Warrant. With respect to any fraction of a share called for upon the exercise of
this Warrant, an amount equal to such fraction multiplied by the then current
price at which each Share may be purchased hereunder shall be paid in cash to
the Holder.

     4. Charges, Taxes and Expenses. Issuance of certificates for Shares upon
        ---------------------------
the exercise of this Warrant shall be made without charge to the holder hereof
for any issue or transfer tax or other incidental expense in respect of the
issuance of such certificate, all of which taxes and expenses shall be paid by
the Company, and such certificates shall be issued in the name of the Holder.

     5. No Rights as Shareholders. This Warrant does not entitle the Holder to
        -------------------------
any voting rights or other rights as a shareholder of the Company prior to the
exercise thereof.

     6. Loss, Theft, Destruction or Mutilation of Warrant. Upon receipt by the
        -------------------------------------------------
Company of evidence reasonably satisfactory to it of the loss, theft,
destruction or mutilation of this Warrant, and in case of loss, theft or
destruction, of indemnity or security reasonably satisfactory to it, and upon
reimbursement to the Company of all reasonable expenses incidental thereto, and
upon surrender and cancellation of this Warrant, if mutilated, the Company will
make and deliver a new Warrant of like tenor and dated as of such cancellation,
in lieu of this Warrant.

     7. Saturdays, Sundays, Holidays, etc. If the last or appointed day for the
        ---------------------------------
taking of any action or the expiration of any right required or granted herein
shall be a Saturday or a Sunday or shall be a legal holiday, then such action
may be taken or such right may be exercised on the next succeeding day not a
Saturday, Sunday or a legal holiday.

     8. Automatic Conversion on Merger, etc. If the Company merges with or into
        -----------------------------------
any other corporation or entity, effects a reorganization, or sells or conveys
all or substantially all of its assets to any other corporation or entity in a
transaction in which the shareholders of the Company immediately before the
transaction own immediately after the transaction less than a majority of the
outstanding voting securities of the surviving or corporation or entity (or its
parent), then, unless previously exercised, the Warrant will be deemed to have
been converted immediately prior to the effective date of the transaction
pursuant to Section 2(a) hereof. The Holder will receive certificates
representing the Shares due to the Holder as a result of any such deemed
conversion upon surrender of this Warrant at the principal executive office of
the Company. Notwithstanding the foregoing, if the fair market value of one
Share (as defined in Section 2(b)) is less than the Exercise Price, then the
Warrant shall terminate immediately prior to the effective date.

     9. Adjustments. The Exercise Price and the number of shares purchasable
        -----------
hereunder are subject to adjustment from time to time as follows:

         (a) Reclassification, etc. If the Company, at any time while this
             ---------------------
Warrant, or any portion hereof, remains outstanding and unexpired by
reclassification of securities or otherwise, shall change any of the securities
as to which purchase rights under this Warrant exist into the same or a

                                       3
<PAGE>

different number or securities or any other class or classes, this Warrant shall
thereafter represent the right to acquired such number and kind of securities as
would have been issuable as the result of such change with respect to the
securities that were subject to the purchase rights under this Warrant
immediately prior to such reclassification or other change and the Exercise
Price therefor shall be appropriately adjusted, all subject to further
adjustment as provided in this Section 9.

         (b) Split, Subdivision or Combination of Shares. If the Company at any
             -------------------------------------------
time while this Warrant, or any portion hereof, remains outstanding and
unexpired shall split, subdivide or combine the securities as to which purchase
rights under this Warrant exist, into a different number of securities of the
same class, the Exercise Price for such securities shall be proportionately
decreased in the case of a split or subdivision or proportionately increased in
the case of combination, in both cases by the ratio which the total number of
such securities to be outstanding immediately after such event bears to the
total number of such securities outstanding immediately prior to such event.

         (c) Cash Distributions. No adjustment on account of cash dividends or
             ------------------
interest on the securities as to which purchase rights under this Warrant exist
will be made to the Exercise Price under this Warrant.

     10. Miscellaneous.
         -------------
         (a) Issue Date. The provisions of this Warrant shall be construed and
             ----------
shall be given effect in all respect as if it had been issued and delivered by
the Company on the date set forth below.

         (b) Governing Law. THIS WARRANT SHALL BE GOVERNED IN ALL RESPECTS BY
             -------------
THE LAWS OF THE STATE OF TEXAS AS SUCH LAWS ARE APPLIED TO AGREEMENTS BETWEEN
TEXAS RESIDENTS ENTERED INTO AND TO BE PERFORMED ENTIRELY WITHIN TEXAS.

         (c) Restrictions. By acceptance hereof, the Holder acknowledges that
             ------------
the Shares acquired upon the exercise of this Warrant may have restrictions upon
its resale imposed by state and federal securities laws.

         (d) Waivers and Amendments. This Warrant and any provisions hereof may
             ----------------------
be changed, waived, discharged or terminated only by an instrument in writing
signed by the party against which enforcement of the same is sought.

         (e) Assignment. This Warrant may be assigned or transferred by the
             ----------
Holder only with the prior written approval of the Company; provided, however,
that Holder may transfer all or part of this Warrant to its affiliates,
including, without limitation, Imperial Bancorp, at any time without notice to
the Company, and such affiliate shall then be entitled to all the rights of
Holder under this Warrant and any related agreements. Any affiliate assignee of
Holder shall cooperate fully by delivering, on its own behalf, to the Company
the representations and covenants made by Holder in the Warrant Purchase
Agreement, as requested by the Company, and the Company shall cooperate fully in
ensuring that any stock issued upon exercise of this Warrant is issued in the
name

                                       4
<PAGE>

of the affiliate that exercises the Warrant. This Warrant shall be binding
upon the permitted successors or their assigns of Holder and the Company.

         (f) Construction. The language used in this Warrant will be deemed to
be the language chosen by the parties to express their mutual intent and no
rules of strict construction will be applied against any party.

         (g) Market Stand-off Covenant. The Bank agrees, in connection with the
Company's initial public offering of the Company's securities, (i) not to sell,
make short sales of, loan, grant any options for the purchase of, or otherwise
dispose of any securities of the Company held by the Bank (other than those
shares included in the registration) without the prior written consent of the
Company or the underwriters managing such initial underwritten public offering
of the Company's securities for one hundred eighty (180) days from the effective
date of such registration and (ii) further agrees to execute any agreement
reflecting (i) above as may be requested by the underwriters at the time of the
public offering. The Bank further agrees that the Company may impose stop
transfer instructions in order to enforce the foregoing covenants.

     IN WITNESS WHEREOF, the Company has caused this Warrant to be executed by
its officers thereunto duly authorized.

Dated: February 28, 2000.

                                  ClearCommerce Corporation

                                  By: /s/ Michael S. Grajeda
                                     ------------------------------------------
                                     Michael S. Grajeda, Vice President and
                                     Chief Financial Officer

                                       5
<PAGE>

                               NOTICE OF EXERCISE
                               ------------------

TO:     ClearCommerce Corporation
        11500 Metric Blvd., Suite 300
        Austin, Texas  78758
        ATTN:  Secretary

     1. The undersigned hereby elects to purchase ______________ shares of the
_________________ (the "Shares") of ClearCommerce Corporation pursuant to the
                       --------
terms of the attached Warrant, and tenders herewith payment of the purchase
price in full, together with all applicable transfer taxes, if any.

     2. Please issue a certificate or certificates representing the Shares in
the name of the undersigned or in such other name as is specified below:

               -------------------------------------------------
                                  (Print Name)
               Address:
                        ----------------------------------------

                        ----------------------------------------

     3. The undersigned confirms that the Shares are being acquired for the
account of the undersigned for investment only and not with a view to, or for
resale in connection with, the distribution thereof and that the undersigned has
no present intention of distributing or selling the Shares.

------------------------------------      --------------------------------------
(Date)                                    (Signature)

                                          --------------------------------------
                                          (Print Name)
<PAGE>

                              NOTICE OF CONVERSION
                              --------------------

TO:     ClearCommerce Corporation
        11500 Metric Blvd., Suite 300
        Austin, Texas  78758
        ATTN:  Secretary

     1. The undersigned hereby elects to convert the attached Warrant into such
number of shares of _________________ ClearCommerce Corporation (the "Shares")
                                                                     --------
as is determined pursuant to Section 2 of such Warrant, which conversion shall
be effected pursuant to the terms of the attached Warrant.

     2. Please issue a certificate or certificates representing the Shares in
the name of the undersigned or in such other name as is specified below:

               -------------------------------------------------
                                  (Print Name)
               Address:
                        ----------------------------------------

                        ----------------------------------------

     3. The undersigned represents that the Shares are being acquired for the
account of the undersigned for investment and not with a view to, or for resale
in connection with, the distribution thereof and that the undersigned has no
present intention of distributing or reselling such shares.

------------------------------------      --------------------------------------
(Date)                                    (Signature)

                                          --------------------------------------
                                          (Print Name)

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