Document:

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                                                                    EXHIBIT 10.1

The Warrant and the securities issuable upon exercise of this Warrant (the
"Securities") have not been registered under the Securities Act of 1933 (the
"Securities Act") or under any state securities or Blue Sky laws ("Blue Sky
Laws"). No transfer, sale, assignment, pledge, hypothecation or other
disposition of this Warrant or the Securities or any interest therein may be
made except (a) pursuant to an effective registration statement under the
Securities Act and any applicable Blue Sky Laws or (b) if the Company has been
furnished with both an opinion of counsel for the holder, which opinion and
counsel shall be reasonably satisfactory to the Company, to the effect that no
registration is required because of the availability of an exemption from
registration under the Securities Act and applicable Blue Sky Laws, and
assurances that the transfer, sale, assignment, pledge, hypothecation or other
disposition will be made only in compliance with the conditions of any such
registration or exemption.

                   WARRANT TO PURCHASE SHARES OF COMMON STOCK
                              OF POPMAIL.COM, INC.

WARRANT NO. FP- __ Irving, Texas
                                                                 August 24, 2000

         This certifies that, for value received, FAIRVIEW PARTNERS, or its
successors or assigns (the "Holder") is entitled to purchase from Popmail.com,
Inc. (the "Company") Eighty Thousand (80,000) fully paid and nonassessable
shares (the "Shares") of the Company's Common Stock, $.01 par value (the "Common
Stock") at an exercise price of $0.75 per share (the "Exercise Price"), subject
to adjustment as herein provided. This Warrant may be exercised by Holder at any
time after the date hereof; provided that, Holder shall in no event have the
right to exercise this Warrant or any portion thereof later than August 24,
2004.

         This Warrant shall replace that certain Warrant No. FP-2 issued by the
Company to Fairview Partners on May 15, 2000 (The "Initial Warrant"). Effective
upon the issuance hereof, the Initial Warrant shall be canceled by the Company
and be of no further force or effect.

         This Warrant is subject to the following provisions, terms and
conditions:

         1. Exercise of Warrant. The rights represented by this Warrant may be
exercised by the Holder, in whole or in part (but not as to a fractional share
of Common Stock), by the surrender of this Warrant (properly endorsed, if
required, at the Company's principal office in Irving, Texas, or such other
office or agency of the Company as the Company may designate by notice in
writing to the Holder at the address of such Holder appearing on the books of
the Company at any time within the period above named), and upon payment to it
by certified check, bank draft or cash of the purchase price for such Shares.
The Company agrees that the Shares so purchased shall have and are deemed to be
issued to the Holder as the record owner of such Shares as of the close of
business on the date on which this Warrant shall have been surrendered and
payment made for such Shares as aforesaid. Certificates for the Shares of Common
Stock so purchased shall be delivered to the Holder within a reasonable time,
not exceeding ten (10) days, after the rights represented by this Warrant shall
have been so exercised, and, unless this Warrant has expired, a new Warrant
representing the number of Shares, if any, with respect to which this Warrant
shall not then have been exercised shall also be delivered to the Holder within
such time. The Company may require that any such new Warrant or any certificate
for Shares purchased upon the exercise hereof bear a legend substantially
similar to that which is contained on the face of this Warrant.

         2. Transferability of this Warrant. This Warrant is issued upon the
following terms, to which Holder consents and agrees:

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             a. Until this Warrant is transferred on the books of the
         Company, the Company will treat the Holder of this Warrant registered
         as such on the books of the Company as the absolute owner hereof for
         all purposes without being affected by any notice to the contrary.

             b. This Warrant may not be exercised, and this Warrant and the
         Shares underlying this Warrant shall not be transferable, except in
         compliance with all applicable state and federal securities laws,
         regulations and orders, and with all other applicable laws, regulations
         and orders.

             c. The Warrant may not be transferred, and the Shares
         underlying this Warrant may not be transferred, without the Holder
         obtaining an opinion of counsel satisfactory in form and substance to
         the Company's counsel stating that the proposed transaction will not
         result in a prohibited transaction under the Securities Act of 1933, as
         amended ("Securities Act"), and applicable Blue Sky laws. By accepting
         this Warrant, the Holder agrees to act in accordance with any
         conditions reasonably imposed on such transfer by such opinion of
         counsel.

             d. Neither this issuance of this Warrant nor the issuance of
         the Shares underlying this Warrant have been registered under the
         Securities Act.

         3.  Certain Covenants of the Company. The Company covenants and agrees
that all Shares which may be issued upon the exercise of the rights represented
by this Warrant, upon issuance and full payment for the Shares so purchased,
will be duly authorized and issued, fully paid and nonassessable and free from
all taxes, liens and charges with respect to the issue hereof, except those that
may be created by or imposed upon the Holder or its property, and without
limiting the generality of the foregoing, the Company covenants and agrees that
it will from time to time take all such actions as may be requisite to assure
that the par value per share of the Common Stock is at all times equal to or
less than the effective purchase price per share of the Common Stock issuable
pursuant to this Warrant. The Company further covenants and agrees that during
the period within which the rights represented by this Warrant may be exercised,
the Company will at all times have authorized and reserved free of preemptive or
other rights for the exclusive purpose of issue upon exercise of the purchase
rights evidenced by this Warrant, a sufficient number of shares of its Common
Stock to provide for the exercise of the rights represented by this Warrant.

         4.  Adjustment of Exercise Price and Number of Shares. The Exercise
Price and number of Shares are subject to the following adjustments:

             a. Adjustment of Exercise Price for Stock Dividend, Stock Split
         or Stock Combination. In the event that (i) any dividends on any
         class of stock of the Company payable in Common Stock or securities
         convertible into or exercisable for Common Stock ("Common Stock
         Equivalents") shall be paid by the Company, (ii) the Company shall
         subdivide its then outstanding shares of Common Stock into a greater
         number of shares, or (iii) the Company shall combine its outstanding
         shares of Common Stock, by reclassification or otherwise, then, in any
         such event, the Exercise Price in effect immediately prior to such
         event shall (until adjusted again pursuant hereto) be adjusted
         immediately after such event to a price (calculated to the nearest full
         cent) determined by dividing (a) the number of shares of Common Stock
         outstanding immediately prior to such event, multiplied by the then
         existing Exercise Price, by (b) the total number of shares of Common
         Stock outstanding immediately after such event, and the resulting
         quotient shall be the adjusted Exercise Price per share. No adjustment
         of the Exercise Price shall be made if the amount of such adjustment
         shall be less than $.05 per share, but in such case any adjustment that
         would otherwise be required then to be made shall be carried forward
         and shall be made at the time and together with the next subsequent
         adjustment which, together with any adjustment or adjustments so
         carried forward, shall amount to not less than $.05 per share.

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             b. Adjustment of Number of Shares Purchasable on Exercise of
         Warrants. Upon each adjustment of the Exercise Price pursuant to this
         Section, the Holder shall thereafter (until another such adjustment) be
         entitled to purchase at the adjusted Exercise Price the number of
         shares, calculated to the nearest full share, obtained by multiplying
         the number of shares specified in such Warrant (as adjusted as a result
         of all adjustments in the Exercise Price in effect prior to such
         adjustment) by the Exercise Price in effect prior to such adjustment
         and dividing the product so obtained by the adjusted Exercise Price.

             c. Notice as to Adjustment. Upon any adjustment of the
         Exercise Price and any increase or decrease in the number of shares of
         Common Stock purchasable upon the exercise of the Warrant, then, and in
         each such case, the Company within thirty (30) days thereafter shall
         give written notice thereof, by first class mail, postage prepaid,
         addressed to each Holder as shown on the books of the Company, which
         notice shall state the adjusted Exercise Price and the increased or
         decreased number of shares purchasable upon the exercise of the
         Warrants, and shall set forth in reasonable detail the method of
         calculation and the facts upon which such calculation is based.

             d. Effect of Reorganization, Reclassification, Merger, etc. If
         at any time while this Warrant is outstanding there should be (i) any
         capital reorganization of the capital stock of the Company (other than
         the issuance of any shares of Common Stock in subdivision of
         outstanding shares of Common Stock by reclassification or otherwise and
         other than a combination of shares provided for in Section 4(a)
         hereof), (ii) any consolidation or merger of the Company with another
         corporation, or any sale, conveyance, lease or other transfer by the
         Company of all or substantially all of its property to any other
         corporation, which is effected in such a manner that the holders of
         Common Stock shall be entitled to receive cash, stock, securities, or
         assets with respect to or in exchange for Common Stock, or (iii) any
         dividend or any other distribution upon any class of stock of the
         Company payable in stock of the Company of a different class, other
         securities of the Company, or other property of the Company (other than
         cash), then, as a part of such transaction, lawful provision shall be
         made so that Holder shall have the right thereafter to receive, upon
         the exercise hereof, the number of shares of stock or other securities
         or property of the Company, or of the successor corporation resulting
         from such consolidation or merger, or of the corporation to which the
         property of the Company has been sold, conveyed, leased or otherwise
         transferred, as the case may be, which the Holder would have been
         entitled to receive upon such capital reorganization, reclassification
         of capital stock, consolidation, merger, sale, conveyance, lease or
         other transfer, if this Warrant had been exercised immediately prior to
         such capital reorganization, reclassification of capital stock,
         consolidation, merger, sale, conveyance, lease or other transfer. In
         any such case, appropriate adjustments (as determined by the Board of
         Directors of the Company) shall be made in the application of the
         provisions set forth in this Warrant (including the adjustment of the
         Exercise Price and the number of Shares issuable upon the exercise of
         the Warrant) to the end that the provisions set forth herein shall
         thereafter be applicable, as near as reasonably may be, in relation to
         any shares or other property thereafter deliverable upon the exercise
         of the Warrant as if the Warrant had been exercised immediately prior
         to such capital reorganization, reclassification of capital stock, such
         consolidation, merger, sale, conveyance, lease or other transfer and
         the Holder had carried out the terms of the exchange as provided for by
         such capital reorganization, consolidation or merger. The Company shall
         not effect any such capital reorganization, consolidation, merger or
         transfer unless, upon or prior to the consummation thereof, the
         successor corporation or the corporation to which the property of the
         Company has been sold, conveyed, leased or otherwise transferred shall
         assume by written instrument the obligation to deliver to the Holder
         such shares of stock, securities, cash or property as in accordance
         with the foregoing provisions such Holder shall be entitled to
         purchase.

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         5.  No Rights as Stockholders. This Warrant shall not entitle the
Holder as such to any voting rights or other rights as a stockholder of the
Company.

         6.  Registration Rights.

             a. Piggyback Registration Rights. Provided that the Shares are
         not then included in a current registration statement of the Company,
         if the Company, at any time before the fifth anniversary of the
         issuance of this Warrant, shall file a registration statement with the
         Securities and Exchange Commission ("SEC") under the Securities Act of
         1933, as amended, for the purpose of registering shares of Common Stock
         for sale to the public, the Company shall give to the Holder at least
         twenty (20) days advance written notice of its intention to file such
         registration statement and Holder shall have the right to have included
         in such registration statement such number of the Shares as it shall
         designate to the Company within ten (10) days after the date of such
         notice, provided that the number of Shares to be included in such
         registration statement, when added to all the other shares to be
         included therein, does not exceed the number of shares which the
         Company and its underwriters, if any, reasonably fix for inclusion. If
         the number of Shares to be included in such registration statement is
         less than the total number of Shares which the Holder has requested to
         be included, then the Holder and other holders of shares of Common
         Stock or other securities of the Company entitled to include shares of
         Common Stock in such registration shall participate in the underwriting
         pro rata based upon the total number of shares of Common Stock
         requested to be registered by all of such holders. The Holder shall
         furnish the Company with such information as may be required in
         connection with such registration statement and will cooperate to cause
         such registration to become effective at the earliest practicable time.
         If the shares to which such registration relates are to be sold in an
         underwritten offering, the Holder, as a condition to the inclusion of
         the shares in the registration statement, shall agree that its Shares
         will be sold only as a part of such underwritten offering and at the
         price and upon the terms fixed by the Company and its underwriters,
         subject to the right of the Holder to withdraw the Shares therefrom.

             b. Demand Registration Rights. On a one-time basis only, during
         the three year period commencing May 15, 2002, upon request by
         the Holder or Holders of a majority in interest of this Warrant, and of
         any Shares, the Company will promptly take all necessary steps to
         register or qualify, under the 1933 Act and the securities laws of such
         states as the holders may reasonably request, such number of Shares
         issued and to be issued upon conversion of the Warrants and shares of
         common stock of the Company owned at such time by such holders pursuant
         to the conversion of that certain $2,000,000 Senior Convertible Note
         issued as of the date of this Warrant requested by such holders in
         their request to the Company. The Company shall keep effective and
         maintain any registration, qualification, notification, or approval
         specified in this section for such period as may be reasonably
         necessary for such Holder or Holders of this Warrant and/or such Shares
         to dispose thereof and from time to time shall amend or supplement the
         prospectus used in connection therewith to the extent necessary in
         order to comply with applicable law.

         7.  Governing Law.  This Warrant shall be governed by and construed in
accordance with the laws of the State of Minnesota.

         8.  Amendments and Waivers.  The provisions of this Warrant may not be
amended, modified or supplemented, and waiver or consents to departures from the
provisions hereof may not be given, unless the Company agrees in writing and has
obtained the written consent of the Holder.

         9.  Notices. All notices or communications hereunder, except as herein
otherwise specifically provided, shall be in writing and if sent to the Holder
shall be mailed, delivered, or telefaxed and confirmed to the Holder at his or
her address set forth on the records of the Company; or if sent to

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the Company shall be mailed, delivered, or telefaxed and confirmed to
PopMail.com, Inc., 1333 Corporate Drive, Suite 350, Irving, Texas 75038 or to
such other address as the Company or the Holder shall notify the other as
provided in this Section.

         [The remainder of this page has been intentionally left blank.]

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         IN WITNESS WHEREOF, PopMail.com, Inc. has caused this Warrant to be
signed by its duly authorized officer in the date set forth above.

                                       POPMAIL.COM, INC.

                                       By_____________________________________
                                       Its____________________________________

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                                SUBSCRIPTION FORM

         To be signed only upon exercise of Warrant.

         The undersigned, the holder of the within Warrant, hereby irrevocably
elects to exercise the purchase right represented by such Warrant for, and to
purchase thereunder, ____________________ of the shares of Common Stock of
PopMail.com, Inc. (the "Shares") to which such Warrant relates and herewith
makes payment of $_____________ therefor in cash, certified check or bank draft
and requests that a certificate evidencing the Shares be delivered to,
_______________________________, the address for whom is set forth below the
signature of the undersigned:

Dated: ____________________

                                 _______________________________________
                                 (Signature)
                                 _______________________________________
                                 _______________________________________
                                 (Address)

                                   [ ] [ ] [ ]

                                 ASSIGNMENT FORM

         To be signed only upon authorized transfer of Warrant.

         FOR VALUE RECEIVED, the undersigned hereby sells, assigns, and
transfers unto _____________________________________ the right to purchase
shares of Common Stock of PopMail.com, Inc. to which the within Warrant relates
and appoints ____________________ attorney, to transfer said right on the books
of _________________ with full power of substitution in the premises.

Dated: ____________________

                                     _______________________________________
                                     (Signature)

                                     _______________________________________
                                     _______________________________________
                                     (Address)<PAGE>   1
                                                                    EXHIBIT 10.2

                            STOCK PURCHASE AGREEMENT

                                 BY AND BETWEEN

                                NETCALENDAR, INC.

                                       AND

                                POPMAIL.COM, INC.

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

                                 AUGUST 8, 2000

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

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                            STOCK PURCHASE AGREEMENT

         This Stock Purchase Agreement (the "Agreement") is entered into as of
August 8, 2000 (the "Effective Date") by and between NetCalendar, Inc., a
corporation organized under the laws of the State of Delaware (hereinafter
"NetCalendar"), and PopMail.com, inc., a Minnesota corporation ("PopMail").

                              W I T N E S S E T H:

         WHEREAS, PopMail desires to purchase 27,624 shares of NetCalendar
common stock, par value $0.01 per share (the "Shares") and NetCalendar is
willing to sell the Shares to PopMail pursuant to the terms, and subject to the
conditions set forth hereinafter.

         NOW, THEREFORE, in consideration of the foregoing and for other good
and valuable consideration, the receipt and sufficiency of which is hereby
acknowledged, the parties agree as follows:

                               A G R E E M E N T:

                                   ARTICLE 1
                           PURCHASE AND SALE OF STOCK

     1.1 Purchase and Sale. Pursuant to the terms, and subject to the conditions
set forth herein, NetCalendar shall issue and sell the Shares to PopMail, and
PopMail shall purchase the Shares from NetCalendar for the price of $1,000,000
(the "Purchase Price") payable in the manner specified in Section 1.2.

     1.2 Payment of the Purchase Price. The Purchase Price shall be paid in
shares of PopMail common stock, $.01 par value, ("Purchase Price Shares")
delivered to NetCalendar at the closing (the "Closing") of the purchase
transaction contemplated herein selected by mutual agreement of the parties, but
not later than August 26, 2000 (the "Initial Closing Date"). For purposes of
this Section 1.2, the Purchase Price Shares shall be valued at the average
closing share price of PopMail common stock for the ten consecutive trading days
preceding the second business day prior to the Initial Closing Date (the
"Initial Closing Share Price"); provided, however, that PopMail shall not be
obligated to issue shares of its common stock at an effective per share price of
less than $.50. If the average closing share price of PopMail common stock for
the ten consecutive trading days preceding the second business day prior to the
Initial Closing Date is less than $.50, PopMail shall offer to NetCalendar
Purchase Price Shares at an effective per share price of $.50 and NetCalendar
shall have the option to accept such offer (in which event the Initial Closing
Share Price shall be $.50) or to reject such offer and terminate this Agreement
pursuant to Section 6.1.

<PAGE>   3

     1.3 The Closing. The Closing shall take place at the offices of Maslon
Edelman Borman & Brand, LLP, 3300 Wells Fargo Center, Minneapolis, MN 55402. At
the Closing, NetCalendar shall deliver to PopMail a certificate representing the
Shares in a form reasonably satisfactory to PopMail and its counsel and duly
executed by authorized officers of NetCalendar. At the Closing, PopMail shall
deliver to NetCalendar certificates representing the Purchase Price Shares in a
form reasonably satisfactory to NetCalendar and its counsel and duly executed by
authorized officers of PopMail.

     1.4 Supplemental Closing. During the seven (7) business day period
commencing on the 435th day following the Initial Closing Date, NetCalendar
shall make the following determinations: (a) the average per share selling price
(the "Average Selling Price") of all Purchase Price Shares, if any, sold by
NetCalendar during the 15-month period beginning upon the Initial Closing Date
pursuant to the provisions of Section 5.2 hereof, and (b) the number of Purchase
Price Shares, if any, which NetCalendar offered for sale at any time pursuant to
the provisions of Section 5.2 hereof, but was not able to sell due to lack of a
buyer during the applicable period (the "Unsold Purchase Price Shares").
NetCalendar shall provide to PopMail written notice of each such determination
in reasonable detail, which notice shall include a certificate containing any
Unsold Purchase Price Shares (the "Lookback Notice"). If the Average Selling
Price of Purchase Price Shares sold by NetCalendar during such period is less
than the Initial Closing Share Price of such shares, NetCalendar shall have the
right to receive additional cash or, at PopMail's option, shares of PopMail
common stock ("Supplemental Purchase Price Shares") equal in value to the amount
by which the Initial Closing Share Price exceeds the Average Selling Price,
multiplied by the number of Purchase Price Shares sold by NetCalendar during
such 15-month period (such amount constituting the "Supplemental Purchase
Price"). In addition to the Supplemental Purchase Price, to the extent
NetCalendar has returned any Unsold Purchase Price Shares with the Lookback
Notice, NetCalendar shall have the right to receive, in exchange therefor, such
number of NetCalendar Shares as provided below. On the 10th business day
following the date of the Lookback Notice delivered in accordance herewith(the
"Supplemental Closing Date"), PopMail shall deliver to NetCalendar (a) either
cash or one or more certificates executed by duly authorized officers of PopMail
representing Supplemental Purchase Price Shares equal in value to the
Supplemental Purchase Price, and (b) such number of Shares as shall have been
purchased by PopMail with the Unsold Purchase Price Shares as of the Initial
Closing Date. For purposes of this Section 1.4, the value of the Supplemental
Purchase Price Shares shall be equal to the average closing share price of
PopMail common stock for the ten consecutive trading days preceding the second
business day prior to the Supplemental Closing Date. In the event that the
Supplemental Registration Statement is not declared effective by the Securities
and Exchange Commission (the "SEC") on or before the Supplemental Registration
Due Date, or is not maintained effective throughout the Supplemental
Registration Period, pursuant to the provisions of Section 5.3 hereof,
NetCalendar

<PAGE>   4

shall be entitled to return to PopMail certificates representing such number of
Supplemental Purchase Price Shares as shall then be held by NetCalendar (such
shares representing the "Unrealized Supplemental Purchase Price") and PopMail
shall, within five (5) days following receipt of same, either pay to NetCalendar
the Unrealized Supplemental Purchase Price in cash or return to NetCalendar that
number of Shares as shall have been equivalent in value to the Unrealized
Supplemental Purchase Price as of the Initial Closing Date.

                                   ARTICLE 2
                         REPRESENTATIONS AND WARRANTIES

     2.1 Representations and Warranties of NetCalendar. NetCalendar hereby
represents and warrants to PopMail as of the date hereof as follows:

         (a) Organization and Qualification. NetCalendar is a corporation,
validly existing and in good standing under the laws of the State of Delaware,
with the requisite corporate power and authority to own and use its properties
and assets and to carry on its business as currently conducted. NetCalendar is
duly qualified to do business and is in good standing as a foreign corporation
in each jurisdiction in which the nature of the business conducted or property
owned by it makes such qualification necessary, except where the failure to be
so qualified or in good standing, as the case may be, could not, individually or
in the aggregate, (x) adversely affect the legality, validity or enforceability
of the Shares or this Agreement, (y) have a material adverse effect on the
results of operations, assets, or financial condition of NetCalendar, or (z)
adversely impair NetCalendar's ability to perform fully on a timely basis its
material obligations under this Agreement (a "Material Adverse Effect").

         (b) Authorization; Enforcement. NetCalendar has the requisite corporate
power and authority to enter into and to consummate the transactions
contemplated by this Agreement and to otherwise carry out its obligations
thereunder. The execution and delivery of this Agreement by NetCalendar and the
consummation by it of the transactions contemplated hereby have been duly
authorized by all necessary action on the part of NetCalendar. This Agreement
has been duly executed by NetCalendar and when delivered in accordance with the
terms hereof shall constitute the legal, valid and binding obligation of
NetCalendar enforceable against NetCalendar in accordance with its terms, except
as such enforceability may be limited by applicable bankruptcy, insolvency,
reorganization, moratorium, liquidation or similar laws relating to, or
affecting generally the enforcement of, creditors' rights and remedies or by
other equitable principles of general application. NetCalendar is not in
violation of any provision of its certificate of incorporation, bylaws or other
charter documents.

         (c) Capitalization. The authorized, issued and outstanding capital
stock of NetCalendar is set forth in Schedule 2.1(c). The only shares of
currently issued and outstanding NetCalendar capital stock (including shares of
common stock)

<PAGE>   5

entitled to preemptive or similar rights are shares of Series A, B and C
Convertible Preferred Stock. Except as disclosed in Schedule 2.1(c), there are
no outstanding options, warrants, script rights to subscribe to, calls or
commitments of any character whatsoever relating to, or, securities, rights or
obligations convertible into or exchangeable for, or giving any person any right
to subscribe for or acquire any shares of common stock, or contracts,
commitments, understandings, or arrangements by which NetCalendar is or may
become bound to issue additional shares of common stock, or securities or rights
convertible or exchangeable into shares of common stock.

         (d) Issuance of the Shares. The Shares are duly authorized, and, when
issued against payment as contemplated by this Agreement, shall be validly
issued.

         (e) No Conflicts. The execution, delivery and performance of this
Agreement by NetCalendar and the consummation by NetCalendar of the transactions
contemplated hereby do not and will not (i) conflict with or violate any
provision of its certificate of incorporation, bylaws or other charter documents
(each as amended through the date hereof), (ii) conflict with, or constitute a
default (or an event which with notice or lapse of time or both would become a
default) under, or give to others any rights of termination, amendment,
acceleration or cancellation of, any agreement, indenture or instrument
(evidencing a NetCalendar debt or otherwise) to which NetCalendar is a party or
by which any property or asset of NetCalendar is bound or affected, or (iii)
result in a violation of any law, rule, regulation, order, judgment, injunction,
decree or other restriction of any court or governmental authority to which
NetCalendar is subject (including federal and state securities laws and
regulations), or by which any property or asset of NetCalendar is bound or
affected, except in the case of each of clauses (ii) and (iii), as could not,
individually or in the aggregate, have or result in a Material Adverse Effect.
The business of NetCalendar is not being conducted in violation of any law,
ordinance or regulation of any governmental authority, except for violations
which, individually or in the aggregate, could not have or result in a Material
Adverse Effect.

         (f) Consents and Approvals. NetCalendar is not required to obtain any
consent, waiver, authorization or order of, or make any filing or registration
with, any court or other federal, state, local, foreign or other governmental
authority or other Person (defined below) in connection with the execution,
delivery and performance by NetCalendar of this Agreement other than where the
failure to obtain such consent, waiver, authorization or order, or to give or
make such notice or filing, could not have or result in, individually or in the
aggregate, a Material Adverse Effect. NetCalendar shall deliver to PopMail the
Shares in the manner contemplated hereby free and clear of all liens and
encumbrances of any nature whatsoever. A "Person" means an individual or
corporation, partnership, trust, incorporated or unincorporated association,
joint venture, limited liability company, joint stock company, government (or an
agency or subdivision thereof) or other entity of any kind.

<PAGE>   6
         (g) Litigation; Proceedings. Except as specifically disclosed in
Schedule 2.1(g), there is no action, suit, notice of violation, proceeding or
investigation pending or, to the knowledge of NetCalendar, threatened against or
affecting NetCalendar or any of its properties before or by any court,
governmental or administrative agency or regulatory authority (federal, state,
county, local or foreign) which (i) adversely affects or challenges the
legality, validity or enforceability of this Agreement or the Shares or (ii)
could, individually or in the aggregate, have or result in a Material Adverse
Effect.

         (h) No Default or Violation. NetCalendar (i) is not in default under or
in violation of (and has not received notice of a claim that it is in default
under or that it is in violation of) any indenture, loan or credit agreement or
any other agreement or instrument to which it is a party or by which it or any
of its properties is bound, (ii) is not in violation of any order of any court,
arbitrator or governmental body, or (iii) is not in violation of any statute,
rule or regulation of any governmental authority, except as could not
individually or in the aggregate, have or result in, a Material Adverse Effect.

         (i) Private Offering. Assuming the accuracy of the representations and
warranties of PopMail set forth in Sections 2.2(j), (k) and (l), the offer,
issuance and sale of the Shares to PopMail as contemplated hereby are exempt
from the registration requirements of the Securities Act of 1933, as amended
(the "Securities Act").

         (j) Investment Intent. NetCalendar is acquiring the Purchase Price
Shares, and may acquire the Supplemental Purchase Price Shares, for
NetCalendar's own account for investment purposes only and not with a view to or
for distributing or reselling such securities except pursuant to a registration
statement then effective under the Securities Act.

         (k) Access to Information. NetCalendar acknowledges that NetCalendar
has been afforded (i) the opportunity to ask such questions as NetCalendar has
deemed necessary of, and to receive answers from, representatives of PopMail
concerning the merits and risks of investing in the Purchase Price Shares and
the Supplemental Purchase Price Shares; (ii) access to information about PopMail
and PopMail's financial condition, results of operations, business, properties,
management and prospects sufficient to enable NetCalendar to evaluate
NetCalendar's investment; and (iii) the opportunity to obtain such additional
information which PopMail possesses or can acquire without unreasonable effort
or expense that is necessary to make an informed investment decision.

         (l) Reliance. NetCalendar understands and acknowledges that (i) the
Purchase Price Shares and the Supplemental Purchase Price Shares are being
issued to NetCalendar without registration under the Securities Act in a private
placement that is exempt from the registration provisions of the Securities Act
and (ii) the availability of such exemption, depends in part on, and PopMail
will rely upon the accuracy and truthfulness of, the

<PAGE>   7

foregoing representations and NetCalendar hereby consents to such reliance.

     2.2 Representations and Warranties of PopMail. PopMail hereby represents
and warrants to NetCalendar as of the date hereof as follows:

         (a) Organization and Qualification. PopMail is a corporation, validly
existing and in good standing under the laws of the State of Minnesota, with the
requisite corporate power and authority to own and use its properties and assets
and to carry on its business as currently conducted. PopMail is duly qualified
to do business and is in good standing as a foreign corporation in each
jurisdiction in which the nature of the business conducted or property owned by
it makes such qualification necessary, except where the failure to be so
qualified or in good standing, as the case may be, could not, individually or in
the aggregate, (x) adversely affect the legality, validity or enforceability of
the Purchase Price Shares, the Supplemental Purchase Price Shares or this
Agreement, (y) have a material adverse effect on the results of operations,
assets, or financial condition of PopMail, or (z) adversely impair PopMail's
ability to perform fully on a timely basis its material obligations under this
Agreement (a "Material Adverse Effect").

         (b) Authorization; Enforcement. PopMail has the requisite corporate
power and authority to enter into and to consummate the transactions
contemplated by this Agreement and to otherwise carry out its obligations
thereunder. The execution and delivery of this Agreement by PopMail and the
consummation by it of the transactions contemplated hereby have been duly
authorized by all necessary action on the part of PopMail. This Agreement has
been duly executed by PopMail and when delivered in accordance with the terms
hereof shall constitute the legal, valid and binding obligation of PopMail
enforceable against PopMail in accordance with its terms, except as such
enforceability may be limited by applicable bankruptcy, insolvency,
reorganization, moratorium, liquidation or similar laws relating to, or
affecting generally the enforcement of, creditors' rights and remedies or by
other equitable principles of general application. PopMail is not in violation
of any provision of its articles of incorporation, bylaws or other charter
documents.

         (c) Capitalization. The authorized, issued and outstanding capital
stock of PopMail is set forth in Schedule 2.2(c). Except as disclosed in
Schedule 2.2(c), there are no outstanding options, warrants, script rights to
subscribe to, calls or commitments of any character whatsoever relating to, or,
securities, rights or obligations convertible into or exchangeable for, or
giving any person any right to subscribe for or acquire any shares of common
stock, or contracts, commitments, understandings, or arrangements by which
PopMail is or may become bound to issue additional shares of common stock, or
securities or rights convertible or exchangeable into shares of common stock.

<PAGE>   8

         (d) Issuance of the Purchase Price Shares and the Supplemental Purchase
Price Shares. The Purchase Price Shares and the Supplemental Purchase Price
Shares are duly authorized, and, when issued against payment as contemplated by
this Agreement, shall be validly issued.

         (e) No Conflicts. The execution, delivery and performance of this
Agreement by PopMail and the consummation by PopMail of the transactions
contemplated hereby do not and will not (i) conflict with or violate any
provision of its articles of incorporation, bylaws or other charter documents
(each as amended through the date hereof), (ii) conflict with, or constitute a
default (or an event which with notice or lapse of time or both would become a
default) under, or give to others any rights of termination, amendment,
acceleration or cancellation of, any agreement, indenture or instrument
(evidencing a PopMail debt or otherwise) to which PopMail is a party or by which
any property or asset of PopMail is bound or affected, or (iii) result in a
violation of any law, rule, regulation, order, judgment, injunction, decree or
other restriction of any court or governmental authority to which PopMail is
subject (including federal and state securities laws and regulations), or by
which any property or asset of PopMail is bound or affected, except in the case
of each of clauses (ii) and (iii), as could not, individually or in the
aggregate, have or result in a Material Adverse Effect. The business of PopMail
is not being conducted in violation of any law, ordinance or regulation of any
governmental authority, except for violations which, individually or in the
aggregate, could not have or result in a Material Adverse Effect.

         (f) Consents and Approvals. PopMail is not required to obtain any
consent, waiver, authorization or order of, or make any filing or registration
with, any court or other federal, state, local, foreign or other governmental
authority or other Person (defined below) in connection with the execution,
delivery and performance by PopMail of this Agreement other than where the
failure to obtain such consent, waiver, authorization or order, or to give or
make such notice or filing, could not have or result in, individually or in the
aggregate, a Material Adverse Effect. PopMail shall deliver to PopMail the
Purchase Price Shares and, if applicable, the Supplemental Purchase Price Shares
in the manner contemplated hereby free and clear of all liens and encumbrances
of any nature whatsoever. A "Person" means an individual or corporation,
partnership, trust, incorporated or unincorporated association, joint venture,
limited liability company, joint stock company, government (or an agency or
subdivision thereof) or other entity of any kind.

         (g) Litigation; Proceedings. Except as specifically disclosed in
Schedule 2.2(g), there is no action, suit, notice of violation, proceeding or
investigation pending or, to the knowledge of PopMail, threatened against or
affecting PopMail or any of its properties before or by any court, governmental
or administrative agency or regulatory authority (federal, state, county, local
or foreign) which (i) adversely affects or challenges the legality, validity or
enforceability of this Agreement

<PAGE>   9

or the Purchase Price Shares or the Supplemental Purchase Price Shares or (ii)
could, individually or in the aggregate, have or result in a Material Adverse
Effect.

         (h) No Default or Violation. PopMail (i) is not in default under or in
violation of (and has not received notice of a claim that it is in default under
or that it is in violation of) any indenture, loan or credit agreement or any
other agreement or instrument to which it is a party or by which it or any of
its properties is bound, (ii) is not in violation of any order of any court,
arbitrator or governmental body, or (iii) is not in violation of any statute,
rule or regulation of any governmental authority, except as could not
individually or in the aggregate, have or result in, a Material Adverse Effect.

         (i) Private Offering. Assuming the accuracy of the representations and
warranties of NetCalendar set forth in Sections 2.1(j), (k) and (l), the offer,
issuance and sale of the Purchase Price Shares and the Supplemental Purchase
Price Shares to NetCalendar as contemplated hereby are exempt from the
registration requirements of the Securities Act of 1933, as amended (the
"Securities Act").

         (j) Investment Intent. PopMail is acquiring the Shares for PopMail's
own account for investment purposes only and not with a view to or for
distributing or reselling such securities.

         (k) Access to Information. PopMail acknowledges that PopMail has been
afforded (i) the opportunity to ask such questions as PopMail has deemed
necessary of, and to receive answers from, representatives of NetCalendar
concerning the merits and risks of investing in the Shares; (ii) access to
information about NetCalendar and NetCalendar's financial condition, results of
operations, business, properties, management and prospects sufficient to enable
PopMail to evaluate PopMail's investment; and (iii) the opportunity to obtain
such additional information which PopMail possesses or can acquire without
unreasonable effort or expense that is necessary to make an informed investment
decision.

         (l) Reliance. PopMail understands and acknowledges that (i) the Shares
are being issued to PopMail without registration under the Securities Act in a
private placement that is exempt from the registration provisions of the
Securities Act and (ii) the availability of such exemption, depends in part on,
and NetCalendar will rely upon the accuracy and truthfulness of, the foregoing
representations and PopMail hereby consents to such reliance.

                                   ARTICLE 3
                                 INDEMNIFICATION

     3.1 Survival of Representations and Warranties. Notwithstanding any
investigation made by or on behalf of any of the parties hereto or the results
of any such investigation and notwithstanding the participation of such party in
the Closing,

<PAGE>   10

the representations and warranties contained in Article 2 hereof shall survive
the Closing, provided that claims based upon any alleged breach of a
representation or warranty contained in Sections 2.1(g) or 2.2(g) may be brought
at any time on or prior to the expiration of any relevant statute of limitations
governing the underlying claim.

     3.2 Indemnification of PopMail. NetCalendar agrees to indemnify and hold
harmless PopMail, and each of PopMail's subsidiaries, and their respective
officers, directors, employees, agents, affiliates and shareholders against and
in respect of: (i) any and all losses, damages or deficiencies (whether as a
result of a direct claim by PopMail against NetCalendar, a third party claim
against PopMail or otherwise) resulting to PopMail from any and all breaches of
representations, warranties, covenants or other terms of this Agreement by
NetCalendar made or contained in this Agreement or in any certification, list,
document, exhibit or schedule delivered to PopMail under or in connection with
this Agreement or the transactions contemplated herein; and (ii) all costs and
expenses incident to any and all actions, suits, proceedings, claims, demands,
assessments, settlements or judgments in respect of the foregoing, regardless of
the merit thereof, including PopMail's reasonable legal and accounting fees and
expenses (whether incident to the foregoing or to PopMail's enforcement of said
rights of defense and indemnity) (items (i) and(ii) above shall be referred to
herein collectively as "PopMail's Damages").

     3.3 Procedure for Indemnification of PopMail. If any action, suit or
proceeding shall be commenced against PopMail or any claim, demand or assessment
be asserted against PopMail in respect of which PopMail proposes to demand
indemnification, PopMail shall notify NetCalendar to that effect with reasonable
promptness. PopMail will have the right to cause NetCalendar to assume the
entire control of the defense, compromise or settlement thereof, including, at
the expense of NetCalendar, employment of counsel satisfactory to PopMail and,
in connection therewith, PopMail shall cooperate fully to make available to
NetCalendar all pertinent information under its control. With respect to any
action, suit, proceeding claim, demand or assessment made against PopMail as to
which PopMail does not cause NetCalendar to assume control of the defense
thereof, NetCalendar shall thereafter reimburse PopMail for all of PopMail's
Damages, as and when they are incurred.

     3.4 Indemnification of NetCalendar. PopMail agrees to indemnify and hold
harmless NetCalendar, and each of NetCalendar's subsidiaries, and their
respective officers, directors, employees, agents, affiliates and stockholders
against and in respect of: (i) any and all losses, damages or deficiencies
(whether as a result of a direct claim by NetCalendar against PopMail, a third
party claim against NetCalendar or otherwise) resulting to NetCalendar from any
and all breaches of representations, warranties, covenants or other terms of
this Agreement by PopMail made or contained in this Agreement or in any
certification, list, document, exhibit or schedule delivered to NetCalendar
under or in connection with

<PAGE>   11

this Agreement or the transactions contemplated herein; and (ii) all costs and
expenses incident to any and all actions, suits, proceedings, claims, demands,
assessments, settlements or judgments in respect of the foregoing, regardless of
the merit thereof, including NetCalendar's reasonable legal and accounting fees
and expenses (whether incident to the foregoing or to NetCalendar's enforcement
of said rights of defense and indemnity) (items (i) and(ii) above shall be
referred to herein collectively as "NetCalendar's Damages").

     3.5 Procedure for Indemnification of NetCalendar. If any action, suit or
proceeding shall be commenced against NetCalendar or any claim, demand or
assessment be asserted against NetCalendar in respect of which NetCalendar
proposes to demand indemnification, NetCalendar shall notify PopMail to that
effect with reasonable promptness. NetCalendar will have the right to cause
PopMail to assume the entire control of the defense, compromise or settlement
thereof, including, at the expense of PopMail, employment of counsel
satisfactory to NetCalendar and, in connection therewith, NetCalendar shall
cooperate fully to make available to PopMail all pertinent information under its
control. With respect to any action, suit, proceeding claim, demand or
assessment made against NetCalendar as to which NetCalendar does not cause
PopMail to assume control of the defense thereof, PopMail shall thereafter
reimburse NetCalendar for all of NetCalendar's Damages, as and when they are
incurred.

                                   ARTICLE 4
                         OTHER AGREEMENTS OF THE PARTIES

     4.1 Transfer Restrictions.

         (a) The Shares, Purchase Price Shares, the Supplemental Purchase Price
Shares and the Additional Shares (defined in Section 3.3 below) may only be
disposed of pursuant to an effective registration statement under the Securities
Act or pursuant to an available exemption from or in a transaction not subject
to the registration requirements thereof. In connection with any transfer of
such securities other than pursuant to an effective registration statement, the
issuer may require the transferor thereof to provide to the issuer an opinion of
counsel experienced in the area of federal securities laws selected by the
transferor, the form and substance of which opinion shall be reasonably
satisfactory to the issuer and its counsel, to the effect that such transfer
does not require registration under the Securities Act of 1933, as amended.

         (b) Each of NetCalendar and PopMail agree to the imprinting, so long as
is required by this Section 3.1(b), of either of the following legends on
certificates and other documents representing the Shares, Purchase Price Shares,
Supplemental Purchase Price Shares and Additional Shares:

<PAGE>   12

Legend (1):

THESE SECURITIES HAVE NOT BEEN REGISTERED WITH THE UNITED STATES SECURITIES AND
EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE, IN RELIANCE UPON
AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE
"SECURITIES ACT"), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT
TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT OR PURSUANT TO
AN AVAILABLE EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO, THE
REGISTRATION REQUIREMENTS OF THE SECURITIES ACT, AND IN ACCORDANCE WITH
APPLICABLE STATE SECURITIES LAWS.

Legend (2):
THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED UNDER
THE SECURITIES ACT OF 1933, AS AMENDED, OR THE SECURITIES LAWS OF ANY STATE, AND
MAY BE TRANSFERRED ONLY IF REGISTERED UNDER SUCH APPLICABLE ACTS OR UPON
DELIVERY TO THE COMPANY OF AN OPINION OF COUNSEL, REASONABLY SATISFACTORY TO THE
COMPANY, THAT SUCH TRANSFER IS EXEMPT FROM SUCH REGISTRATION.

     4.2 The legends set forth above shall be removed from such certificates and
other documents and the issuer shall issue a certificate without any legend
(upon surrender of the legended certificates or other documents duly endorsed)
to each holder of such certificates and other documents upon which it is stamped
if (i) such securities are registered for resale under the Securities Act or
(ii) such legend is not required pursuant to Rule 144(k) promulgated under the
Securities Act. Each of NetCalendar and PopMail agrees that it will provide the
other, upon request, with certificates representing the issuer's securities
issued pursuant to this Agreement free from such legend at such time as such
legend is no longer required in accordance with this Section.

     4.3 Appointment to Board of Advisors; Appointment to Board of Directors.

         (a) Promptly upon the Closing of the purchase of the Shares
contemplated by this Agreement, NetCalendar shall appoint one person designated
by PopMail to the NetCalendar Board of Advisors and permit such person (or any
replacement designated by PopMail) to fully participate in the duties and other
activities of the Board of Advisors, and shall reimburse such person for any and
all expense reasonably incurred in connection therewith, so long as PopMail owns
any of the Shares. PopMail hereby designates                as PopMail's first
appointee to serve on the NetCalendar Board of Advisors.

         (b) In the event that PopMail fully exercises the Option pursuant to
Section 4.4 below as to all 27,624 Additional Shares, and PopMail causes the
Initial Registration Statement defined in Section 5.1 to be declared effective
on or before the Initial Registration Due Date, NetCalendar shall cause
PopMail's

<PAGE>   13

designee (or any replacement designee subsequently identified by PopMail) to be
appointed to the NetCalendar Board of Directors. So long as (i) the Initial
Registration Statement is maintained effective throughout the Registration
Period and any Supplemental Registration Statement is maintained effective
throughout the Supplemental Registration Period, and (ii) PopMail owns in excess
of eight percent (8%) of NetCalendar's issued and outstanding shares of capital
stock, on a fully diluted, as-converted basis, PopMail's designee shall continue
to serve on the NetCalendar Board of Directors.

     4.4 Option to Purchase Additional Shares. NetCalendar hereby grants to
PopMail an option (the "Option") to purchase up to 27,624 additional shares of
NetCalendar common stock (the "Additional Shares") at a per share price of
$36.2004 (the "Exercise Price"), payable in cash. To exercise the Option,
PopMail must deliver written notice thereof (the "Option Notice") to NetCalendar
on or before the 30th day following the Initial Closing Date. In the event that
PopMail elects to exercise the Option, the parties shall select a mutually
agreeable closing date, time and location within thirty (30) days of the Option
Notice, at which PopMail will deliver to NetCalendar the aggregate Exercise
Price and NetCalendar shall deliver to PopMail certificates representing the
Additional Shares.

     4.5 Notice of Breaches. Each of NetCalendar and PopMail shall give prompt
written notice to the other of any breach of any representation, warranty or
other agreement contained in this Agreement, as well as any events or
occurrences arising after the date hereof and prior to the Initial Closing Date
which would reasonably be likely to cause any representation or warranty or
other agreement of such party, as the case may be, contained herein to be
materially incorrect or breached as the date thereof. However, no disclosure by
either party pursuant to this Section 4.5 shall be deemed to cure any breach of
any representation, warranty or other agreement contained herein

                                   ARTICLE 5
                      REGISTRATION OF POPMAIL COMMON STOCK

     5.1 Filing of Initial Registration Statement. On or before the 30th day
following the Initial Closing Date, PopMail shall prepare and file a
registration statement on Form S-3 (or any successor form thereto) (the "Initial
Registration Statement") covering the resale of the Purchase Price Shares issued
pursuant to Section 1.2 hereof with the SEC pursuant to Rule 415 of the
Securities Act. PopMail will use its reasonable best efforts to have the Initial
Registration Statement declared effective by the SEC on or before the 75th day
following the Initial Closing Date (the Initial Registration Due Date"). PopMail
shall maintain the effectiveness of the Initial Registration Statement at all
times until the second anniversary of the Initial Closing Date (the
"Registration Period").

     5.2 Resale of Purchase Price Shares. NetCalendar may sell pursuant to the
Initial Registration Statement up to 25 percent of the Purchase Price Shares
during each of four successive 90

<PAGE>   14

day periods commencing on the date the Initial Registration Statement is
declared effective by the SEC (the "Effective Date"). NetCalendar may sell any
remaining Purchase Price Shares pursuant to the Initial Registration Statement
during the period commencing on the 361 day following the Effective Date and
ending upon the expiration of the Registration Period and, thereafter, pursuant
to Rule 144 promulgated under the Securities Act of 1933, as amended.

     5.3 Supplemental Registration Statement. In the event that PopMail issues
Supplemental Purchase Price Shares pursuant to the provisions of Section 1.4
hereof, PopMail shall prepare and file a registration statement on Form S-3 (or
any successor form thereto) (the "Supplemental Registration Statement") covering
the resale of such securities with the SEC pursuant to Rule 415 of the
Securities Act. PopMail will use its reasonable best efforts to have the
Supplemental Registration Statement declared effective by the SEC on or before
the 75th day following the Supplemental Closing Date (the "Supplemental
Registration Due Date"). PopMail shall maintain the effectiveness of the
Supplemental Registration Statement at all times until the first anniversary of
the Supplemental Closing Date (the "Supplemental Registration Period").

     5.4 Filing of Amendments. PopMail shall prepare and file with the SEC such
amendments (including post-effective amendments) and supplements to the Initial
Registration Statement (and, if applicable, the Supplemental Registration
Statement) and the prospectus(es) used in connection therewith as may be
necessary to keep such Registration Statements effective at all times through
the Registration Period and the Supplemental Registration Period.

     5.5 Qualification Under Blue Sky Laws. PopMail shall use its reasonable
best efforts to (i) register and qualify the securities covered by the Initial
Registration Statement and Supplemental Registration Statement (collectively,
the "PopMail Shares") under such other securities or blue sky laws of such
jurisdictions as NetCalendar may reasonably request, (ii) prepare and file in
those jurisdictions such amendments (including post-effective amendments) and
supplements, (iii) take such other actions as may be necessary to maintain such
registrations and qualifications in effect at all times through the Registration
Period and, if applicable, the Supplemental Registration Period and (iv) take
all other actions reasonably necessary or advisable to qualify the PopMail
Shares for sale in such jurisdictions; provided, however, that PopMail shall not
be required in connection therewith or as a condition thereto to (I) qualify to
do business in any jurisdiction where it would not otherwise be required to
qualify but for this Section 5.5, (II) subject itself to general taxation in any
such jurisdiction, (III) file a general consent to service of process in any
such jurisdiction, except as may be required for such registration and
qualification or any exemption therefrom, or (IV) make any change in its charter
or bylaws.

<PAGE>   15

     5.6 Registration Expenses. All expenses (other than fees and expenses of
investment bankers retained by NetCalendar, if any, and brokerage commissions)
incurred in connection with registrations, filings or qualifications pursuant to
this Article 5, including, without limitation, all registration, listing and
qualifications fees, printers and accounting fees and the fees and disbursements
of counsel for PopMail, shall be borne by PopMail; provided, however, that
NetCalendar shall bear the fees and out-of-pocket expenses of its own legal
counsel and any accountants and agents engaged by NetCalendar.

     5.7 Indemnification. In the event any PopMail Shares are included in a
registration statement pursuant to this Agreement:

         (a) To the extent permitted by law, PopMail (in such capacity an
"Indemnifying Party") shall indemnify and hold NetCalendar (in such capacity an
"Indemnified Person") harmless against any losses, claims, damages, expenses or
liabilities (collectively the "Claims") to which NetCalendar becomes subject
under the Securities Act, the Securities Exchange Act of 1934, as amended (the
"Exchange Act") or otherwise, insofar as such Claims (or actions or proceedings,
whether commenced or threatened, in respect thereof) arise out of or are based
upon any of the following statements, omissions or violations in the Initial
Registration Statement or Supplemental Registration Statement, or any
post-effective amendment thereof, or any prospectus included therein: (i) any
untrue statement or alleged untrue statement of a material fact contained in
either registration statement or any post-effective amendment thereof or the
omission or alleged omission to state therein a material fact required to be
stated therein or necessary to make the statements therein not misleading, (ii)
any untrue statement or alleged untrue statement of a material fact contained in
any preliminary prospectus if used prior to the effective date of the applicable
registration statement, or contained in the final prospectus (as amended or
supplemented, if PopMail files any amendment thereof or supplement thereto with
the SEC) or the omission or alleged omission to state therein any material fact
necessary to make the statements made therein, in light of the circumstances
under which the statements therein were made, not misleading or (iii) any
violation or alleged violation by PopMail of the Securities Act, the Exchange
Act or any state securities law or any rule or regulation (the matters in the
foregoing clauses (i) through (iii) being, collectively, "Violations"). PopMail
shall reimburse NetCalendar promptly as such expenses are incurred and are due
and payable, for any legal fees or other reasonable expenses incurred by
NetCalendar in connection with investigating or defending any such Claim.
Notwithstanding anything to the contrary contained herein, the indemnification
agreement contained in this Section 5.7 shall not apply to a Claim arising out
of or based upon a Violation which occurs in reliance upon and in conformity
with information furnished in writing to PopMail by NetCalendar expressly for
use in connection with the preparation of either the Initial Registration
Statement or the Supplemental Registration Statement or any such amendment
thereof. Such indemnity shall remain in full force and effect

<PAGE>   16

regardless of any investigation made by or on behalf of such Indemnified Person.

         (b) In connection with the Initial Registration Statement and, if
applicable, the Supplemental Registration Statement, NetCalendar (in such
capacity an "Indemnifying Party") agrees to indemnify and hold harmless, to the
same extent and in the same manner set forth in Section 5.7(a), PopMail, each of
its directors, each of its officers who signs the Registration Statement, each
person, if any, who controls PopMail within the meaning of the Securities Act or
the Exchange Act, and any other shareholder selling securities pursuant to the
applicable registration statement or any of its directors or officers or any
person who controls such shareholder within the meaning of the Securities Act or
the Exchange Act (each an "Indemnified Party"), against any Claim to which any
of them may become subject, under the Securities Act, the Exchange Act or
otherwise, insofar as such Claim arises out of or is based upon any Violation,
in each case to the extent (and only to the extent) that such Violation occurs
in reliance upon and in conformity with written information furnished to PopMail
by NetCalendar expressly for use in connection with either or both registration
statement; and NetCalendar will promptly reimburse any legal or other expenses
reasonably incurred by the Indemnified Parties in connection with investigating
or defending any such Claim; provided, however, that the indemnity agreement
contained in this Section 5.7(b) shall not apply to amounts paid in settlement
of any Claim if such settlement is effected without the prior written consent of
NetCalendar, which consent shall not be unreasonably withheld; provided,
further, however, that NetCalendar shall be liable under this Section 5.7(b) for
only that amount of a Claim as does not exceed the net proceeds to NetCalendar
as a result of the sale of the Purchase Price Shares or the Supplemental
Purchase Price Shares pursuant to either the Initial Registration Statement or
the Supplemental Registration Statement. Such indemnity shall remain in full
force and effect regardless of any investigation made by or on behalf of such
Indemnified Party.

         (c) Promptly after receipt by the Indemnified Person or any Indemnified
Party under this Section 5.7 of notice of the commencement of any action
(including any governmental action), the Indemnified Person or such Indemnified
Party shall, if a Claim in respect thereof is to made against any Indemnifying
Party under this Section 5.7, deliver to the Indemnifying Party a written notice
of the commencement thereof and this Indemnifying Party shall have the right to
participate in, and, to the extent the Indemnifying Party so desires, jointly
with any other Indemnifying Party similarly noticed, to assume control of the
defense thereof with counsel mutually satisfactory to the Indemnifying Parties;
provided, however, that an Indemnified Person or Indemnified Party shall have
the right to retain its own counsel, with the fees and expenses to be paid by
the Indemnifying Party, if, in the reasonable opinion of counsel retained by the
Indemnifying Party, the representation by such counsel of the Indemnified Person
or Indemnified Party and the Indemnifying Party would be inappropriate due to
actual or potential differing interests between such Indemnified Person or

<PAGE>   17

Indemnified Party and other party represented by such counsel in such
proceeding. The failure to deliver written notice to the Indemnifying Party
within a reasonable time of the commencement of any such action shall not
relieve such Indemnifying Party of any liability to the Indemnified Person or
Indemnified Party under this Section 5.7, except to the extent that the
Indemnifying Party is prejudiced in its ability to defend such action. The
indemnification required by this Section 5.7 shall be made by periodic payments
of the amount thereof during the course of the investigation or defense, as such
expense, loss, damage or liability is incurred and is due and payable.

     5.8 Contribution. To the extent any indemnification provided for herein is
prohibited or limited by law, the Indemnifying Party agrees to make the maximum
contribution with respect to any amounts for which it would otherwise be liable
under Section 5.7 to the fullest extent permitted by law; provided, however,
that (a) no contribution shall be made under circumstances where the maker would
not have been liable for indemnification under the fault standards set forth in
Section 5.7, (b) no person guilty of fraudulent misrepresentation (within the
meaning of Section 11(f) of the Securities Act) shall be entitled to
contribution from any person who was not guilty of such fraudulent
misrepresentation and (c) contribution by NetCalendar shall be limited in amount
to the net amount of proceeds received by NetCalendar from the sale of the
Purchase Price Shares and the Supplemental Purchase Price Shares.

     5.9 Reports under Exchange Act. With a view to making available to
NetCalendar the benefits of Rule 144 or any other similar rule or regulation of
the SEC that may at any time permit NetCalendar to sell securities of PopMail to
the public without registration, until such time as NetCalendar have sold all
the Purchase Price Shares and the Supplemental Purchase Price Shares pursuant to
the Initial Registration Statement and, if applicable, the Supplemental
Registration Statement, or Rule 144, PopMail agrees to:

         (a) make and keep public information available, as those terms are
understood and defined in Rule 144;

         (b) file with the SEC all reports and other documents required of
PopMail under the Securities Act and the Exchange Act; and

         (c) furnish to NetCalendar so long as NetCalendar owns Purchase Price
Shares or Supplemental Purchase Price Shares, promptly upon request, (i) a
written statement by PopMail that it has complied with the reporting
requirements of Rule 144, the Securities Act and the Exchange Act, (ii) a copy
of the most recent annual or quarterly report of PopMail and such other reports
and documents so filed by PopMail and (iii) such other information as may be
reasonably requested to permit NetCalendar to sell such securities pursuant to
Rule 144 without registration.

                                   ARTICLE 6

<PAGE>   18

                              TERMINATION; REMEDIES

     6.1 Termination. This Agreement will be terminated and, except as set forth
below, the provisions hereof shall have no further force or effect in the
earliest event that:

         (a) The average closing share price of PopMail common stock for the ten
consecutive trading days preceding the second business day prior to the Initial
Closing Date is less than $.50 and NetCalendar rejects PopMail's offer of
Purchase Price Shares made pursuant to Section 1.1;

         (b) The Initial Registration Statement is not declared effective by the
SEC on or before the Initial Registration Due Date, and NetCalendar elects (as
hereby authorized) to terminate this Agreement at any time during the 60-day
period following the Initial Registration Due Date by providing written notice
thereof (the "Termination Notice") to PopMail during such period; provided,
however, that NetCalendar may not elect to terminate this Agreement if the
Initial Registration Statement is declared effective by the SEC prior to
NetCalendar providing such Termination Notice. Within ten (10) days of the date
of such Termination Notice, PopMail shall deliver to NetCalendar the
certificates representing the Shares and NetCalendar shall deliver to PopMail
the certificates representing the Purchase Price Shares; or

         (c) The Initial Registration Statement, having once been declared
effective by the SEC, is not maintained effective by PopMail throughout the
Registration Period, and NetCalendar elects (as hereby authorized) to terminate
this Agreement at any time during the 60-day period following the date upon
which the Initial Registration shall become not effective, by providing written
notice thereof (the "Termination Notice") to PopMail during such period;
provided, however, that NetCalendar may not elect to terminate this Agreement if
the Initial Registration Statement, having become not effective, is again made
effective by the SEC prior to NetCalendar providing such Termination Notice.
Within ten (10) days of the date of such Termination Notice, NetCalendar shall
deliver to PopMail certificates representing such number of Purchase Price
Shares as shall then be held by NetCalendar, and PopMail shall deliver to
NetCalendar certificates representing such number of Shares as shall equal the
value of the Purchase Price Shares tendered by NetCalendar hereunder, with the
value of the Purchase Price Shares and the Shares exchanged under this Section
6.1(c) each being determined as of the Initial Closing Date.

     6.2 Litigation Expense. In the event any party hereto is made or shall
become a party to any litigation commenced by or against the other party
involving the enforcement of any of the rights or remedies of such party, or
arising on account of a default of the other party in its performance of any of
the other party's obligations hereunder, then the prevailing party in such
litigation shall be entitled to full reimbursement by the other party of any and
all costs incurred by such prevailing party in

<PAGE>   19

connection with such litigation, including the costs, fees and expenses of any
and all attorneys' fees.

                                   ARTICLE 7
                                  MISCELLANEOUS

         7.1 Fees and Expenses. Each party shall pay the fees and expenses of
its advisers and other experts in connection with the transactions contemplated
by this Agreement.

         7.2 Entire Agreement. This Agreement, together with any Exhibits and
Schedules hereto, contains the entire understanding of the parties with respect
to the subject matter hereof and supersedes all prior agreements and
understandings, oral or written, with respect to such matters.

         7.3 Notices. Any and all notices or other communications or deliveries
required or permitted to be provided hereunder shall be in writing and shall be
deemed given and effective on the earliest of (i) the date of transmission, if
such notice or communication is delivered via facsimile at the facsimile
telephone number specified in this Section prior to 4:30 p.m. (Minneapolis time)
on a business day, (ii) the business day after the date of transmission, if such
notice or communication is delivered via facsimile at the facsimile telephone
number specified herein later than 4:30 p.m. (Minneapolis time) on any date and
earlier than 11:59 p.m. (Minneapolis time) on such date, (iii) the business day
following the date of mailing, if sent by nationally recognized overnight
courier service, or (iv) upon actual receipt by the party to whom such notice is
required to be given. The address for such notices and communications shall be
as follows:

                                    If to PopMail:

                                    PopMail.com, inc.
                                    5700 W. Plano Parkway Suite 1000
                                    Plano, TX  75093
                                    telephone:  972-381-2742
                                    facsimile:  972-381-2743
                                    Attention: Mr. Gary Schneider

                                    With copy to:

                                    Philip J. Tilton, Esq.
                                    Maslon Edelman Borman & Brand, LLP
                                    3300 Wells Fargo Center
                                    Minneapolis, MN 55402
                                    telephone: 612-672-8200
                                    facsimile: 612-672-8397

                                    If to NetCalendar:

                                    NetCalendar, Inc.
                                    1901 N. Ft. Myer Drive, Suite 702
                                    Arlinton, Virginia  22209
                                    telephone:  703.812.1500
                                    facsimile:  703.812.1507

<PAGE>   20

                                    Attention:  Mr. Edward L. Neumann

                                    With copy to:

                                    J. Stephen Britt, Esq.
                                    Enterprise Business Law Group LLC
                                    7900 Westpark Drive, Suite T-305
                                    McLean, Virginia  22102
                                    telephone:  703.848.8317
                                    facsimile:  703.848.8333

     7.4 Waivers. No waiver of any default with respect to any provision,
condition or requirement of this Agreement shall be deemed to be a continuing
waiver in the future or a waiver of any other provision, condition or
requirement hereof, nor shall any delay or omission of either party to exercise
any right hereunder in any manner impair the exercise of any such right accruing
to it thereafter.

     7.5 Headings. The headings herein are for convenience only, do not
constitute a part of this Agreement and shall not be deemed to limit or affect
any of the provisions hereof.

     7.6 Assignment and Delegation. Neither party may assign its rights nor
delegate its duties or obligations arising under this Agreement without the
written consent of the other, which consent may be withheld for any reason or no
reason. The assignment by a party of this Agreement or any rights hereunder
shall not affect the obligations of such party under this Agreement.

     7.7 No Third-Party Beneficiaries. This Agreement is intended for the
benefit of the parties hereto and their respective permitted successors and
assigns and, other than with respect to permitted assignees under Section 7.6,
is not for the benefit of, nor may any provision hereof be enforced by, any
other Person.

     7.8 Governing Law. This Agreement shall be governed by and construed and
enforced in accordance with the internal laws of the State of Minnesota without
regard to the principles of conflicts of law thereof.

     7.9 Survival. The representations, warranties, agreements and covenants
contained in this Agreement shall survive after the Closing Date.

     7.10 Execution. This Agreement may be executed in two or more counterparts,
all of which when taken together shall be considered one and the same agreement
and shall become effective when counterparts have been signed by each party and
delivered to the other party, it being understood that both parties need not
sign the same counterpart. In the event that any signature is delivered by
facsimile transmission, such signature shall create a valid and binding
obligation of the party executing (or on whose behalf such signature is
executed) the same with the same

<PAGE>   21

force and effect as if such facsimile signature page were an original thereof.

     7.11 Severability. In case any one or more of the provisions of this
Agreement shall be invalid or unenforceable in any respect, the validity and
enforceability of the remaining terms and provisions of this Agreement shall not
in any way be affected or impaired thereby and the parties will attempt to agree
upon a valid and enforceable provision which shall be a reasonable substitute
therefor, and upon so agreeing, shall incorporate such substitute provision in
this Agreement.

     7.12 Remedies. Each of the parties to this Agreement acknowledges and
agrees that the other parties would be damaged irreparably in the event any of
the provisions of this Agreement are not performed in accordance with their
specific terms or otherwise are breached. Accordingly, each of the parties
hereto agrees that the other parties shall be entitled to an injunction or
injunctions to prevent breaches of the provisions of this Agreement and to
enforce specifically this Agreement and the terms and provisions of this
Agreement in any action instituted in any court of the United States of America
or any state thereof having jurisdiction over the parties to this Agreement and
the matter, in addition to any other remedy to which they may be entitled, at
law or in equity.

<PAGE>   22

         IN WITNESS WHEREOF, the parties hereto have caused this Stock Purchase
Agreement to be duly executed by their respective authorized persons as of the
date first indicated above.

                                     NETCALENDAR, INC.

                                     By:  /s/ Edward L. Neumann
                                        ------------------------------
                                        Edward L. Neumann
                                        Its: Chief Executive Officer

                                     POPMAIL.COM, INC.

                                     By: /s/ Gary W. Schneider
                                        ------------------------------
                                        Gary Schneider
                                        Its: Chief Executive Officer

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