EXHIBIT 99.10

                    FORM OF AUTOMATIC STOCK OPTION AGREEMENT


                           JUNO ONLINE SERVICES, INC.
                        AUTOMATIC STOCK OPTION AGREEMENT

RECITALS

            A. The Corporation has implemented an automatic option grant program
under the Corporation's 1999 Stock Incentive Plan pursuant to which eligible
non-employee members of the Corporation's Board will automatically receive
special option grants at designated intervals over their period of Board service
in order to provide such individuals with a meaningful incentive to continue to
serve as a member of the Board.

            B. Optionee is an eligible non-employee Board member, and this
Agreement is executed pursuant to, and is intended to carry out the purposes of,
the Plan in connection with the automatic grant of a stock option to purchase
shares of the Corporation's Common Stock under the Plan.

            C. The granted option is intended to be a non-statutory option which
does not meet the requirements of Section 422 of the Internal Revenue Code.

            D. All capitalized terms in this Agreement, to the extent not
otherwise defined in the Agreement, shall have the meaning assigned to them in
the attached Appendix.

            NOW, THEREFORE, it is hereby agreed as follows:

            1. Grant of Option. The Corporation hereby grants to Optionee, as of
the Grant Date, a Non-Statutory Option to purchase up to the number of Option
Shares specified in the Grant Notice. The Option Shares shall be purchasable
from time to time during the option term specified in Paragraph 2 at the
Exercise Price.

            2. Option Term. This option shall have a maximum term of ten (10)
years measured from the Grant Date and shall accordingly expire at the close of
business on the Expiration Date, unless sooner terminated in accordance with
Paragraph 5, 6 or 7.

            3. Limited Transferability. Except to the limited extent provided
below, this option shall be neither transferable nor assignable by Optionee
other than by will or by the laws of descent and distribution following
Optionee's death and may be exercised, during Optionee's lifetime, only by
Optionee. This option may be assigned in whole or in part during Optionee's
lifetime either as (i) as a gift to one or more members of Optionee's Immediate
Family, to a trust in which Optionee and/or one or more such family members hold
more than fifty percent (50%) of the beneficial interest or an entity in which
more than fifty percent (50%) of the voting interests are owned by Optionee
and/or one or more such family members, or (ii) pursuant to a domestic relations
order. The assigned portion shall be exercisable only by the person or persons
who acquire a proprietary interest in the option pursuant to such assignment.
The terms applicable to the assigned portion shall be the same as those in
effect for this option


immediately prior to such assignment and shall be set forth in such documents
issued to the assignee as the Plan Administrator may deem appropriate.

            4. Dates of Exercise. This option shall become exercisable for the
Option Shares in one or more installments as specified in the Grant Notice. As
the option becomes exercisable for such installments, those installments shall
accumulate, and the option shall remain exercisable for the accumulated
installments until the Expiration Date or sooner termination of the option term
under Paragraph 5 or 6.

            5. Cessation of Board Service. The option term specified in
Paragraph 2 shall terminate (and this option shall cease to be outstanding)
prior to the Expiration Date should any of the following provisions become
applicable:

                  (a) Should Optionee cease to serve as a Board member for any
reason while this option is outstanding, then this option shall remain
exercisable until the earlier of (i) the expiration of the twelve (12)-month
period measured from the date of such cessation of Board service or (ii) the
Expiration Date.

                  (b) Should Optionee die while holding this option, then
Optionee's Beneficiary shall have the right to exercise this option during the
applicable exercise period.

                  (c) Should Optionee cease service as a Board member by reason
of death or Permanent Disability, then all Option Shares at the time subject to
this option but not otherwise vested shall immediately vest in full so that this
option may, during the post-service exercise period, be exercised for any or all
of the Option Shares as fully-vested shares of Common Stock.

                  (d) Following Optionee's cessation of Board service, this
option may not be exercised in the aggregate for more than the number of Option
Shares for which this option was exercisable on the date of such cessation of
Board service. Upon the expiration of the applicable exercise period or (if
earlier) upon the Expiration Date, this option shall terminate and cease to be
outstanding for any vested Option Shares for which the option has not been
exercised. However, this option shall, immediately upon Optionee's cessation of
Board service for any reason, terminate and cease to be outstanding for any and
all shares for which this option is not otherwise at that time exercisable.

            6. Change in Control/Hostile Take-Over.

                  (a) In the event of a Change in Control or Hostile Take-Over,
this option, to the extent outstanding but not fully exercisable, shall
automatically accelerate so that this option shall, immediately prior to the
specified effective date for the Change in Control or Hostile Take-Over, become
fully exercisable for all of the Option Shares at the time subject to this
option and may be exercised for any or all of those Option Shares as
fully-vested shares of Common Stock. Immediately following the consummation of
the Change in Control, this option shall terminate and cease to be outstanding,
except to the extent assumed by the successor corporation (or parent thereof) or
otherwise expressly continued in full force and effect pursuant


                                       2.


to the terms of the Change in Control. In the event of a Hostile Take-Over, this
option shall remain exercisable until the expiration or sooner termination of
the option term.

                  (b) If this option is assumed in connection with a Change in
Control, then this option shall be appropriately adjusted, immediately after
such Change in Control, to apply to the number and class of securities which
would have been issuable to Optionee in consummation of such Change in Control
had the option been exercised immediately prior to such Change in Control, and
appropriate adjustments shall also be made to the Exercise Price, provided the
aggregate Exercise Price shall remain the same.

                  (c) Optionee shall have an unconditional right (exercisable
during the thirty (30)-day period immediately following the consummation of a
Hostile Take-Over) to surrender this option to the Corporation in exchange for a
cash distribution from the Corporation in an amount equal to the excess of (i)
the Option Surrender Value of the Option Shares at the time subject to the
surrendered option (whether or not Optionee is otherwise at the time vested in
those shares) over (ii) the aggregate Exercise Price payable for such shares.
This Paragraph 6(c) limited stock appreciation right shall in all events
terminate upon the expiration or sooner termination of the option term and may
not be assigned or transferred by Optionee.

                  (d) To exercise the Paragraph 6(c) limited stock appreciation
right, Optionee must, during the applicable thirty (30)-day exercise period,
provide the Corporation with written notice of the option surrender in which
there is specified the number of Option Shares as to which the option is being
surrendered. Such notice must be accompanied by the return of Optionee's copy of
this Agreement, together with any written amendments to such Agreement. The cash
distribution shall be paid to Optionee within five (5) business days following
such delivery date, and neither the approval of the Plan Administrator nor the
consent of the Board shall be required in connection with such option surrender
and cash distribution. Upon receipt of such cash distribution, this option shall
be cancelled with respect to the shares subject to the surrendered option (or
the surrendered portion), and Optionee shall cease to have any further right to
acquire those Option Shares under this Agreement. The option shall, however,
remain outstanding for the balance of the Option Shares (if any) in accordance
with the terms and provisions of this Agreement, and the Corporation shall issue
a new stock option agreement (substantially in the same form as this Agreement)
for those remaining Option Shares.


                                       3.


            7. Adjustment in Option Shares. Should any change be made to the
Common Stock by reason of any stock split, stock dividend, recapitalization,
combination of shares, exchange of shares or other change affecting the
outstanding Common Stock as a class without the Corporation's receipt of
consideration, appropriate adjustments shall be made to (i) the number and/or
class of securities subject to this option and (ii) the Exercise Price in order
to reflect such change and thereby preclude a dilution or enlargement of
benefits hereunder; provided, however, that the aggregate Exercise Price shall
remain the same.

            8. Stockholder Rights. The holder of this option shall not have any
stockholder rights with respect to the Option Shares until such person shall
have exercised the option, paid the Exercise Price and become a holder of record
of the purchased shares.

            9. Manner of Exercising Option.

                  (a) In order to exercise this option for all or any part of
the Option Shares for which the option is at the time exercisable, Optionee (or
any other person or persons exercising this option) must take the following
actions:

                        (i) Execute and deliver to the Secretary of the
      Corporation a Notice of Exercise for the Option Shares for which the
      option is exercised.

                        (ii) Pay the aggregate Exercise Price for the purchased
      shares in one or more of the following forms:

                        (A) cash or check made payable to the Corporation;

                        (B) shares of Common Stock held by Optionee (or any
            other person or persons exercising the option) for the requisite
            period necessary to avoid a charge to the Corporation's earnings for
            financial reporting purposes and valued at Fair Market Value on the
            Exercise Date; or

                        (C) through a special sale and remittance procedure
            pursuant to which Optionee (or any other person or persons
            exercising this option) shall provide irrevocable instructions (I)
            to a Corporation-approved brokerage firm to effect the immediate
            sale of the vested shares purchased under the option and remit to
            the Corporation, out of the sale proceeds available on the
            settlement date, sufficient funds to cover the aggregate Exercise
            Price payable for those shares plus all applicable income and
            employment taxes required to be withheld by the Corporation by
            reason of such exercise and (II) to the Corporation to deliver the
            certificates for the purchased shares directly to such brokerage
            firm in order to complete the sale.


                                       4.


                  Except to the extent the sale and remittance procedure is
            utilized in connection with the option exercise, payment of the
            Exercise Price must accompany the Notice of Exercise (or Purchase
            Agreement) delivered to the Corporation in connection with the
            option exercise.

                        (iii) Furnish to the Corporation appropriate
      documentation that the person or persons exercising the option (if other
      than Optionee) have the right to exercise this option.

                        (iv) Make appropriate arrangements with the Corporation
      for the satisfaction of all income and employment tax withholding
      requirements applicable to the option exercise.

                  (b) As soon as practical after the Exercise Date, the
Corporation shall issue to or on behalf of Optionee (or any other person or
persons exercising this option) a certificate for the purchased Option Shares.

                  (c) In no event may this option be exercised for any
fractional shares.

            10. No Impairment of Rights. This Agreement shall not in any way
affect the right of the Corporation to adjust, reclassify, reorganize or
otherwise change its capital or business structure or to merge, consolidate,
dissolve, liquidate or sell or transfer all or any part of its business or
assets. Nor shall this Agreement in any way be construed or interpreted so as to
affect adversely or otherwise impair the right of the Corporation or the
stockholders to remove Optionee from the Board at any time in accordance with
the provisions of applicable law.

            11. Compliance with Laws and Regulations.

                  (a) The exercise of this option and the issuance of the Option
Shares upon such exercise shall be subject to compliance by the Corporation and
Optionee with all applicable requirements of law relating thereto and with all
applicable regulations of any stock exchange (or the Nasdaq National Market, if
applicable) on which the Common Stock may be listed for trading at the time of
such exercise and issuance.

                  (b) The inability of the Corporation to obtain approval from
any regulatory body having authority deemed by the Corporation to be necessary
to the lawful issuance and sale of any Common Stock pursuant to this option
shall relieve the Corporation of any liability with respect to the non-issuance
or sale of the Common Stock as to which such approval shall not have been
obtained. However, the Corporation shall use its best efforts to obtain all such
applicable approvals.

            12. Successors and Assigns. Except to the extent otherwise provided
in Paragraph 3 or 6, the provisions of this Agreement shall inure to the benefit
of, and be binding upon, the Corporation and its successors and assigns and
Optionee and Optionee's assigns and Beneficiaries.


                                       5.


            13. Notices. Any notice required to be given or delivered to the
Corporation under the terms of this Agreement shall be in writing and addressed
to the Corporation at its principal corporate offices. Any notice required to be
given or delivered to Optionee shall be in writing and addressed to Optionee at
the address indicated below Optionee's signature line on the Grant Notice. All
notices shall be deemed effective upon personal delivery or upon deposit in the
U.S. mail, postage prepaid and properly addressed to the party to be notified.

            14. Construction/Governing Law. This Agreement and the option
evidenced hereby are made and granted pursuant to the automatic option grant
program in effect under the Plan and are in all respects limited by and subject
to the express terms and provisions of that program. The interpretation,
performance, and enforcement of this Agreement shall be governed by the laws of
the State of New York without resort to that State's conflict-of-laws rules.


                                       6.


                                    EXHIBIT I

                               NOTICE OF EXERCISE

            I hereby notify Juno Online Services, Inc. (the "Corporation") that
I elect to purchase _____ shares of the Corporation's Common Stock (the
"Purchased Shares") at the option exercise price of $_____ per share (the
"Exercise Price") pursuant to that certain option (the "Option") granted to me
pursuant to the automatic option grant program under the Corporation's 1999
Stock Incentive Plan on ________, 199_.

            Concurrently with the delivery of this Exercise Notice to the
Secretary of the Corporation, I shall hereby pay to the Corporation the Exercise
Price for the Purchased Shares in accordance with the provisions of my agreement
with the Corporation evidencing the Option and shall deliver whatever additional
documents may be required by such agreement as a condition for exercise.
Alternatively, I may utilize the special broker-dealer sale and remittance
procedure specified in my agreement to effect payment of the Exercise Price for
any Purchased Shares in which I am vested at the time of exercise.


__________________, 199_
Date

                                        _____________________________________
                                        OPTIONEE

                              Address:  _____________________________________

                                        _____________________________________

Print name in exact manner
it is to appear on the stock
certificate:                            _____________________________________

Address to which certificate
is to be sent, if different
from address above:                     _____________________________________

Social Security Number:                 _____________________________________


                                    APPENDIX

            The following definitions shall be in effect under the Agreement:

      A. Agreement shall mean this Automatic Stock Option Agreement.

      B. Beneficiary shall mean, in the event the Plan Administrator implements
a beneficiary designation procedure, the person designated by Optionee, pursuant
to such procedure, to succeed to Optionee's rights under the option evidenced by
this Agreement to the extent the option is held by Optionee at the time of
death. In the absence of such designation or procedure, the Beneficiary shall be
the personal representative of Optionee's estate or the person or persons to
whom the option is transferred by will or the laws of descent and distribution.

      C. Board shall mean the Corporation's Board of Directors.

      D. Change in Control shall mean shall mean a change in ownership or
control of the Corporation effected through any of the following transactions:

                  (i) a merger, consolidation or reorganization approved by the
      Corporation's stockholders, unless securities representing more than fifty
      percent (50%) of the total combined voting power of the voting securities
      of the successor corporation are immediately thereafter beneficially
      owned, directly or indirectly and in substantially the same proportion, by
      the persons who beneficially owned the Corporation's outstanding voting
      securities immediately prior to such transaction.

                  (ii) any stockholder-approved transfer or other disposition of
      all or substantially all of the Corporation's assets, or

                  (iii) the acquisition, directly or indirectly by any person or
      related group of persons (other than the Corporation or a person that
      directly or indirectly controls, is controlled by, or is under common
      control with, the Corporation), of beneficial ownership (within the
      meaning of Rule 13d-3 of the 1934 Act) of securities possessing more than
      fifty percent (50%) of the total combined voting power of the
      Corporation's outstanding securities pursuant to a tender or exchange
      offer made directly to the Corporation's stockholders which the Board
      recommends such stockholders to accept.

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

      F. Common Stock shall mean the Corporation's common stock.

      G. Corporation shall mean Juno Online Services, Inc., a Delaware
corporation.


                                      A-1.


      H. Exercise Date shall mean the date on which the option shall have been
exercised in accordance with Paragraph 9 of the Agreement.

      I. Exercise Price shall mean the exercise price payable per share as
specified in the Grant Notice.

      J. Expiration Date shall mean the date on which the option term expires as
specified in the Grant Notice.

      K. Fair Market Value per share of Common Stock on any relevant date shall
be determined in accordance with the following provisions:

                  (i) If the Common Stock is at the time traded on the Nasdaq
      National Market, then the Fair Market Value shall be the closing selling
      price per share of Common Stock on the date in question, as the price is
      reported by the National Association of Securities Dealers on the Nasdaq
      National Market or any successor system. If there is no closing selling
      price for the Common Stock on the date in question, then the Fair Market
      Value shall be the closing selling price on the last preceding date for
      which such quotation exists.

                  (ii) (If the Common Stock is at the time listed on any Stock
      Exchange, then the Fair Market Value shall be the closing selling price
      per share of Common Stock on the date in question on the Stock Exchange
      determined by the Plan Administrator to be the primary market for the
      Common Stock, as such price is officially quoted in the composite tape of
      transactions on such exchange. If there is no closing selling price for
      the Common Stock on the date in question, then the Fair Market Value shall
      be the closing selling price on the last preceding date for which such
      quotation exists.

      L. Grant Date shall mean the date of grant of the option as specified in
the Grant Notice.

      M. Grant Notice shall mean the Notice of Grant of Automatic Stock Option
accompanying this Agreement, pursuant to which Optionee has been informed of the
basic terms of the option evidenced hereby.

      N. Hostile Take-Over shall mean:

                  (i) the acquisition, directly or indirectly, by any person or
      related group of persons (other than the Corporation or a person that
      directly or indirectly controls, is controlled by, or is under common
      control with, the Corporation) of beneficial ownership (within the meaning
      of Rule 13d-3 of the 1934 Act) of securities possessing more than
      thirty-five percent (35%) of the total combined voting power of the
      Corporation's outstanding securities pursuant to a tender or exchange
      offer made directly to the Corporation's stockholders which the Board does
      not recommend such stockholders to accept, or


                                      A-2.


                  (ii) a change in the composition of the Board over a period of
      thirty-six (36) consecutive months or less such that a majority of the
      Board members ceases, by reason of one or more contested elections for
      Board membership, to be comprised of individuals who either (A) have been
      Board members continuously since the beginning of such period or (B) have
      been elected or nominated for election as Board members during such period
      by at least a majority of the Board members described in clause (A) who
      were still in office at the time the Board approved such election or
      nomination.

      O. Immediate Family of Optionee shall mean Optionee's child, stepchild,
grandchild, parent, stepparent, grandparent, spouse, former spouse, sibling,
niece, nephew, mother-in-law, father-in-law, son-in-law, daughter-in-law,
brother-in-law or sister-in-law, including adoptive relationships.

      P. 1934 Act shall mean the Securities Exchange Act of 1934, as amended.

      Q. Non-Statutory Option shall mean an option not intended to satisfy the
requirements of Code Section 422.

      R. Notice of Exercise shall mean the notice of exercise in the form
attached hereto as Exhibit I.

      S. Option Shares shall mean the number of shares of Common Stock subject
to the option.

      T. Option Surrender Value shall mean the Fair Market Value per share of
Common Stock on the date the option is surrendered to the Corporation or, in the
event of a Hostile Take-Over effected through a tender offer, the highest
reported price per share of Common Stock paid by the tender offeror in effecting
such Hostile Take-Over, if greater.

      U. Optionee shall mean the person to whom the option is granted as
specified in the Grant Notice.

      V. Permanent Disability shall mean the inability of Optionee to perform
his or her usual duties as a Board member by reason of any medically
determinable physical or mental impairment which is expected to result in death
or has lasted or can be expected to last for a continuous period of twelve (12)
months or more.

      W. Plan shall mean Corporation's 1999 Stock Incentive Plan.

      X. Stock Exchange shall mean the American Stock Exchange or the New York
Stock Exchange.


                                      A-3