Exhibit 99.1


                           JUNO ONLINE SERVICES, INC.
                     2001 SUPPLEMENTAL STOCK INCENTIVE PLAN



                                   ARTICLE ONE

                               GENERAL PROVISIONS

      I.    PURPOSE OF THE PLAN

            This 2001 Supplemental Stock Incentive Plan is intended to promote
the interests of Juno Online Services, Inc., a Delaware corporation, by
providing eligible persons with the opportunity to acquire a proprietary
interest, or otherwise increase their proprietary interest, in the Corporation
as an incentive for them to remain in the service of the Corporation.

            Capitalized terms shall have the meanings assigned to such terms in
the attached Appendix.

      II.   STRUCTURE OF THE PLAN

            A. The Plan shall be divided into two separate equity programs:

                  (i) the Discretionary Option Grant Program under which
      eligible persons may, at the discretion of the Plan Administrator, be
      granted options to purchase shares of Common Stock, and

                  (ii) the Stock Issuance Program under which eligible persons
      may, at the discretion of the Plan Administrator, be issued shares of
      Common Stock directly, either through the immediate purchase of such
      shares or as a bonus for services rendered the Corporation (or any Parent
      or Subsidiary).

            B. The provisions of Articles One and Six shall apply to all equity
      programs under the Plan and shall govern the interests of all persons
      under the Plan.

      III.  ADMINISTRATION OF THE PLAN

            A. The following  provisions  shall govern the  administration  of
      the Plan:

                  (i) Administration of the Plan may, at the Board's discretion,
      be vested in the Primary Committee or a Secondary Committee, or the Board
      may retain the power to administer the Plan.

                  (ii) Members of the Primary Committee or any Secondary
      Committee shall serve for such period of time as the Board may determine
      and may be removed by the Board at any time.

            B. Each  Plan  Administrator   shall,  within  the  scope  of  its
      administrative  functions  under the Plan, have full power and authority
      (subject to the provisions of the Plan).


                  (i) to establish such rules as it may deem appropriate for
      proper administration of the Plan, to make all factual determinations, to
      construe and interpret the provisions of the Plan and the awards
      thereunder and to resolve any and all ambiguities thereunder;

                  (ii) to determine which eligible persons are to receive
      awards, the time or times when such awards are to be made, the number of
      shares to be covered by each such award, the vesting schedule (if any)
      applicable to the award and the maximum term for which the award is to
      remain outstanding;

                  (iii) to amend,  modify or cancel any outstanding award with
      the consent of the holder or accelerate the vesting of such award; and

                  (iv) to take such other discretionary actions as permitted
      pursuant to the terms of the applicable program.

Decisions of each Plan Administrator within the scope of its administrative
functions under the Plan shall be final and binding on all parties.

            C. Members of the Primary Committee or any Secondary Committee shall
serve for such period of time as the Board may determine and may be removed by
the Board at any time. The Board may also at any time terminate the functions of
any Secondary Committee and reassume all powers and authority previously
delegated to such committee.

            D. Service on the Primary Committee or the Secondary Committee shall
constitute service as a Board member, and members of each such committee shall
accordingly be entitled to full indemnification and reimbursement as Board
members for their service on such committee. No member of the Primary Committee
or the Secondary Committee shall be liable for any act or omission made in good
faith with respect to the Plan or any options or stock issuances under the Plan.

      IV.   ELIGIBILITY

      A. The persons eligible to participate in the Plan are as follows:

                  (i)   Employees (other than Section 16 Insiders),

                  (ii)  consultants   and  other   independent   advisors  who
      provide services to the Corporation (or any Parent or Subsidiary), and

                  (iii) any other individuals (including Section 16 Insiders)
      who are to receive option grants under this Plan solely in connection with
      their commencement of Employee status, whether as a result of an
      acquisition of their former employer by the Corporation or any Parent or
      Subsidiary or by reason of their initial hire by the Corporation or such
      Parent or Subsidiary.



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      V.    STOCK SUBJECT TO THE PLAN

            A. The stock issuable under the Plan shall be shares of authorized
      but unissued or reacquired Common Stock, including shares repurchased by
      the Corporation on the open market. The maximum number of shares of Common
      Stock initially reserved for issuance over the term of the Plan shall not
      exceed One Million Five Hundred Thousand (1,500,000) shares. Such share
      reserve shall be in addition to the shares of Common Stock reserved for
      issuance under the Corporation's 1999 Stock Incentive Plan. Accordingly,
      Common Stock issuances under the 1999 Stock Incentive Plan shall not
      reduce the number of shares of Common Stock available for issuance under
      this Plan, and Common Stock issuances under this Plan shall not affect the
      number of shares of Common Stock available for issuance under the 1999
      Stock Incentive Plan.

            B. The number of shares of Common Stock available for issuance under
      the Plan shall automatically increase on the first trading day of each
      calendar year during the term of the Plan, beginning with the 2002
      calendar year, by an amount equal to one-half of one percent (0.5%) of the
      shares of Common Stock outstanding on the last trading day of the
      immediately preceding calendar year, but in no event shall any such annual
      increase exceed Four Hundred Thousand (400,000) shares.

            C. Shares of Common Stock subject to outstanding options shall be
      available for subsequent issuance under the Plan to the extent those
      options expire, terminate or are cancelled for any reason prior to
      exercise in full. Unvested shares issued under the Plan and subsequently
      repurchased by the Corporation, at the original exercise or issue price
      paid per share, pursuant to the Corporation's repurchase rights under the
      Plan shall be added back to the number of shares of Common Stock reserved
      for issuance under the Plan and shall accordingly be available for
      reissuance through one or more subsequent options or direct stock
      issuances under the Plan. However, should the exercise price of an option
      under the Plan be paid with shares of Common Stock or should shares of
      Common Stock otherwise issuable under the Plan be withheld by the
      Corporation in satisfaction of the withholding taxes incurred in
      connection with the exercise of an option or the vesting of a stock
      issuance under the Plan, then the number of shares of Common Stock
      available for issuance under the Plan shall be reduced by the gross number
      of shares for which the option is exercised or which vest under the stock
      issuance, and not by the net number of shares of Common Stock issued to
      the holder of such option or stock issuance. Shares of Common Stock
      underlying one or more stock appreciation rights exercised under the Plan
      shall NOT be available for subsequent issuance.

            D. If any change is 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 maximum number and/or class of
      securities issuable under the Plan, (ii) the number and/or class of
      securities by which the share reserve is to increase each calendar year
      pursuant to the automatic share increase provisions of the Plan, and (iii)
      the number and/or class of securities and the exercise price per share in
      effect under each outstanding option under the Plan. Such adjustments to
      the outstanding options are to be effected in a manner



                                       3


      which shall preclude the enlargement or dilution of rights and benefits
      under such options. The adjustments determined by the Plan Administrator
      shall be final, binding and conclusive.


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                                   ARTICLE TWO

                       DISCRETIONARY OPTION GRANT PROGRAM

      I.    OPTION TERMS

            Each option shall be evidenced by one or more documents in the form
approved by the Plan Administrator; PROVIDED, however, that each such document
shall comply with the terms specified below. Each option granted under the Plan
shall be a Non-Statutory Option for Federal income tax purposes.

            A. EXERCISE PRICE.

                  1. The exercise price per share shall be fixed by the Plan
      Administrator at the time of the option grant.

                  2. The exercise price shall become immediately due upon
      exercise of the option and shall, subject to the provisions of Section II
      of Article Six and the documents evidencing the option, be payable in one
      or more of the forms specified below:

                  (i)   cash or check made payable to the Corporation,

                  (ii) shares of Common Stock held 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

                  (iii) through a special sale and remittance procedure pursuant
      to which the Optionee shall concurrently provide irrevocable instructions
      to (a) a Corporation-designated brokerage firm to effect the immediate
      sale of the purchased shares 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 the purchased shares plus all
      applicable Federal, state and local income and employment taxes required
      to be withheld by the Corporation by reason of such exercise and (b) the
      Corporation to deliver the certificates for the purchased shares directly
      to such brokerage firm in order to complete the sale.

Except to the extent such sale and remittance procedure is utilized, payment of
the exercise price for the purchased shares must be made on the Exercise Date.

            B. EXERCISE AND TERM OF OPTIONS. Each option shall be exercisable at
      such time or times, during such period and for such number of shares as
      shall be determined by the Plan Administrator and set forth in the
      documents evidencing the option. However, no option shall have a term in
      excess of ten (10) years measured from the option grant date.


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            C. CESSATION OF SERVICE.

                  1. The following provisions shall govern the exercise of any
      options outstanding at the time of the Optionee's cessation of Service or
      death:

                  (i) Any option outstanding at the time of the Optionee's
      cessation of Service for any reason shall remain exercisable for such
      period of time thereafter as shall be determined by the Plan Administrator
      and set forth in the documents evidencing the option, but no such option
      shall be exercisable after the expiration of the option term.

                  (ii) Any option held by the Optionee at the time of death may
      be subsequently exercised, to the extent provided in the agreement
      evidencing such option, by the personal representative of the Optionee's
      estate or by the person or persons to whom the option is transferred
      pursuant to the Optionee's will or the laws of inheritance or by the
      Optionee's Beneficiary.

                  (iii) During the applicable post-Service exercise period, the
      option may not be exercised in the aggregate for more than the number of
      vested shares for which the option is exercisable on the date of the
      Optionee's cessation of Service. Upon the expiration of the applicable
      exercise period or (if earlier) upon the expiration of the option term,
      the option shall terminate and cease to be outstanding for any vested
      shares for which the option has not been exercised. However, the option
      shall, immediately upon the Optionee's cessation of Service, terminate and
      cease to be outstanding to the extent the option is not otherwise at that
      time exercisable for vested shares.

                  (iv) Should the Optionee's Service be terminated for
      Misconduct or should the Optionee engage in Misconduct while his or her
      options are outstanding, then all such options shall terminate immediately
      and cease to be outstanding.

                  2. The Plan Administrator shall have complete discretion,
      exercisable either at the time an option is granted or at any time while
      the option remains outstanding:

                  (i) to extend the period of time for which the option is to
      remain exercisable following the Optionee's cessation of Service to such
      period of time as the Plan Administrator shall deem appropriate, but in no
      event beyond the expiration of the option term, and/or

                  (ii) to permit the option to be exercised, during the
      applicable post-Service exercise period, for one or more additional
      installments in which the Optionee would have vested had the Optionee
      continued in Service.

            D. STOCKHOLDER RIGHTS. The holder of an option shall have no
stockholder rights with respect to the shares subject to the option until such
person shall have exercised the option, paid the exercise price and become a
holder of record of the purchased shares.

            E. REPURCHASE RIGHTS. The Plan Administrator shall have the
discretion to grant options which are exercisable for unvested shares of Common
Stock. Should the Optionee



                                       6


cease Service while holding such unvested shares, the Corporation shall have the
right to repurchase, at the exercise price paid per share, any or all of those
unvested shares. The terms upon which such repurchase right shall be exercisable
(including the period and procedure for exercise and the appropriate vesting
schedule for the purchased shares) shall be established by the Plan
Administrator and set forth in the document evidencing such repurchase right.

            F. LIMITED TRANSFERABILITY OF OPTIONS. During the lifetime of the
Optionee, Options shall be exercisable only by the Optionee and shall not be
assignable or transferable other than by will or by the laws of descent and
distribution following the Optionee's death; provided, that , to the extent
permitted by the Plan Administrator, Options may be assigned in whole or in part
during the Optionee's lifetime (i) as a gift to one or more members of the
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 to an entity in which more than fifty percent (50%) of the voting
interests are owned by one or more such family members or (ii) pursuant to a
domestic relations order. The terms applicable to the assigned portion shall be
the same as those in effect for the 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.

      II.   CHANGE IN CONTROL/HOSTILE TAKE-OVER

            A. Each option outstanding at the time of a Change in Control but
      not otherwise fully-vested shall automatically accelerate so that each
      such option shall, immediately prior to the effective date of the Change
      in Control, become exercisable for all of the shares of Common Stock at
      the time subject to that option and may be exercised for any or all of
      those shares as fully-vested shares of Common Stock. However, an
      outstanding option shall not so accelerate if and to the extent: (i) such
      option is, in connection with the Change in Control, assumed or otherwise
      continued in full force and effect by the successor corporation (or parent
      thereof) pursuant to the terms of the Change in Control, (ii) such option
      is replaced with a cash incentive program of the successor corporation
      which preserves the spread existing at the time of the Change in Control
      on the shares of Common Stock for which the option is not otherwise at
      that time exercisable and provides for subsequent payout in accordance
      with the same vesting schedule applicable to those option shares or (iii)
      the acceleration of such option is subject to other limitations imposed by
      the Plan Administrator at the time of the option grant. Each option
      outstanding at the time of the Change in Control shall terminate as
      provided in Section III.C. of this Article Two.

            B. All outstanding repurchase rights shall also terminate
      automatically, and the shares of Common Stock subject to those terminated
      rights shall immediately vest in full, in the event of any Change in
      Control, except to the extent: (i) those repurchase rights are assigned to
      the successor corporation (or parent thereof) or otherwise continue in
      full force and effect pursuant to the terms of the Change in Control or
      (ii) such accelerated vesting is precluded by other limitations imposed by
      the Plan Administrator at the time the repurchase right is issued.



                                       7


            C. Immediately following the consummation of the Change in Control,
      all outstanding options 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 to the terms of the Change in Control.

            D. Each option which is assumed in connection with a Change in
      Control 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 the Optionee in consummation of such Change in Control
      had the option been exercised immediately prior to such Change in Control.
      Appropriate adjustments to reflect such Change in Control shall also be
      made to (i) the exercise price payable per share under each outstanding
      option, PROVIDED the aggregate exercise price payable for such securities
      shall remain the same, (ii) the maximum number and/or class of securities
      available for issuance over the remaining term of the Plan and (iii) the
      maximum number and/or class of securities for which any one person may be
      granted options, separately exercisable stock appreciation rights and
      direct stock issuances under the Plan per calendar year.

            E. The Plan Administrator may at any time provide that one or more
      options will automatically accelerate in connection with a Change in
      Control, whether or not those options are assumed or otherwise continued
      in full force and effect pursuant to the terms of the Change in Control.
      Any such option shall accordingly become exercisable, immediately prior to
      the effective date of such Change in Control, for all of the shares of
      Common Stock at the time subject to that option and may be exercised for
      any or all of those shares as fully-vested shares of Common Stock. In
      addition, the Plan Administrator may at any time provide that one or more
      of the Corporation's repurchase rights shall not be assignable in
      connection with such Change in Control and shall terminate upon the
      consummation of such Change in Control.

            F. The Plan Administrator may at any time provide that one or more
      options will automatically accelerate upon an Involuntary Termination of
      the Optionee's Service within a designated period (not to exceed eighteen
      (18) months) following the effective date of any Change in Control in
      which those options do not otherwise accelerate. Any options so
      accelerated shall remain exercisable for fully-vested shares until the
      EARLIER of (i) the expiration of the option term or (ii) the expiration of
      the one (1) year period measured from the effective date of the
      Involuntary Termination. In addition, the Plan Administrator may at any
      time provide that one or more of the Corporation's repurchase rights shall
      immediately terminate upon such Involuntary Termination.

            G. The Plan Administrator may at any time provide that one or more
      options will automatically accelerate in connection with a Hostile
      Take-Over. Any such option shall become exercisable, immediately prior to
      the effective date of such Hostile Take-Over, for all of the shares of
      Common Stock at the time subject to that option and may be exercised for
      any or all of those shares as fully-vested shares of Common Stock. In
      addition, the Plan Administrator may at any time provide that one or more
      of the Corporation's repurchase rights shall terminate automatically upon
      the consummation of such Hostile Take-Over. Alternatively, the Plan
      Administrator may condition such automatic acceleration and termination
      upon an Involuntary Termination of the



                                       8


      Optionee's Service within a designated period (not to exceed eighteen (18)
      months) following the effective date of such Hostile Take-Over. Each
      option so accelerated shall remain exercisable for fully-vested shares
      until the expiration or sooner termination of the option term.

      III.  STOCK APPRECIATION RIGHTS

            The Plan Administrator may, subject to such conditions as it may
determine, grant to selected Optionees stock appreciation rights which will
allow the holders of those rights to elect between the exercise of the
underlying option for shares of Common Stock and the surrender of that option in
exchange for a distribution from the Corporation in an amount equal to the
excess of (a) the Option Surrender Value of the number of shares for which the
option is surrendered over (b) the aggregate exercise price payable for such
shares. The distribution may be made in shares of Common Stock valued at Fair
Market Value on the option surrender date, in cash, or partly in shares and
partly in cash, as the Plan Administrator shall in its sole discretion deem
appropriate.

      IV.   CANCELLATION AND REGRANT OF OPTIONS

            The Plan Administrator shall have the authority to effect, at any
time and from time to time, with the consent of the affected option holders, the
cancellation of any or all outstanding options under the Plan and to grant in
substitution new options covering the same or a different number of shares of
Common Stock but with an exercise price per share based on the Fair Market Value
per share of Common Stock on the new option grant date.




                                       9







                                  ARTICLE THREE

                     SALARY INVESTMENT OPTION GRANT PROGRAM

                             Intentionally Omitted.


















                                       10





                                  ARTICLE FOUR

                             STOCK ISSUANCE PROGRAM



      I.    STOCK ISSUANCE TERMS

            Shares of Common Stock may be issued under the Stock Issuance
Program through direct and immediate issuances without any intervening options.
Shares of Common Stock may also be issued under the Stock Issuance Program
pursuant to share right awards which entitle the recipients to receive those
shares upon the attainment of designated performance goals or Service
requirements. Each such award shall be evidenced by one or more documents which
comply with the terms specified below.

            A. PURCHASE PRICE.

                  1. The purchase price per share of Common Stock subject to
      direct issuance shall be fixed by the Plan Administrator.

                  2. Subject to the provisions of Section II of Article Six,
      shares of Common Stock may be issued under the Stock Issuance Program for
      any of the following items of consideration which the Plan Administrator
      may deem appropriate in each individual instance:

                  (i)   cash or check made payable to the Corporation, or

                  (ii)  past  services  rendered  to the  Corporation  (or any
      Parent or Subsidiary).

            B. VESTING/ISSUANCE PROVISIONS.

                  1. The Plan Administrator may issue shares of Common Stock
      which are fully and immediately vested upon issuance or which are to vest
      in one or more installments over the Participant's period of Service or
      upon attainment of specified performance objectives. Alternatively, the
      Plan Administrator may issue share right awards which shall entitle the
      recipient to receive a specified number of vested shares of Common Stock
      upon the attainment of one or more performance goals or Service
      requirements established by the Plan Administrator.

                  2. Any new, substituted or additional securities or other
      property (including money paid other than as a regular cash dividend)
      which the Participant may have the right to receive with respect to his or
      her unvested shares of Common Stock by reason of any stock dividend, stock
      split, 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 shall be issued subject to (i) the
      same



                                       11


      vesting requirements applicable to the Participant's unvested shares of
      Common Stock and (ii) such escrow arrangements as the Plan Administrator
      shall deem appropriate.

                  3. The Participant shall have full stockholder rights with
      respect to the issued shares of Common Stock, whether or not the
      Participant's interest in those shares is vested. Accordingly, the
      Participant shall have the right to vote such shares and to receive any
      regular cash dividends paid on such shares.

                  4. Should the Participant cease to remain in Service while
      holding one or more unvested shares of Common Stock, or should the
      performance objectives not be attained with respect to one or more such
      unvested shares of Common Stock, then those shares shall be immediately
      surrendered to the Corporation for cancellation, and the Participant shall
      have no further stockholder rights with respect to those shares. To the
      extent the surrendered shares were previously issued to the Participant
      for consideration paid in cash or cash equivalent (including the
      Participant's purchase-money indebtedness), the Corporation shall repay to
      the Participant the cash consideration paid for the surrendered shares and
      shall cancel the unpaid principal balance of any outstanding
      purchase-money note of the Participant attributable to the surrendered
      shares.

                  5. The Plan Administrator may waive the surrender and
      cancellation of one or more unvested shares of Common Stock (or other
      assets attributable thereto) which would otherwise occur upon the
      cessation of the Participant's Service or the non-attainment of the
      performance objectives applicable to those shares. Such waiver shall
      result in the immediate vesting of the Participant's interest in the
      shares of Common Stock as to which the waiver applies. Such waiver may be
      effected at any time, whether before or after the Participant's cessation
      of Service or the attainment or non-attainment of the applicable
      performance objectives.

                  6. Outstanding share right awards shall automatically
      terminate, and no shares of Common Stock shall actually be issued in
      satisfaction of those awards, if the performance goals or Service
      requirements established for such awards are not attained. The Plan
      Administrator, however, shall have the authority to issue shares of Common
      Stock in satisfaction of one or more outstanding share right awards as to
      which the designated performance goals or Service requirements are not
      attained.

      II.   CHANGE IN CONTROL/HOSTILE TAKE-OVER

            A. All of the Corporation's outstanding repurchase rights shall
      terminate automatically, and all the shares of Common Stock subject to
      those terminated rights shall immediately vest in full, in the event of
      any Change in Control, except to the extent (i) those repurchase rights
      are assigned to the successor corporation (or parent thereof) or otherwise
      continue in full force and effect pursuant to the terms of the Change in
      Control or (ii) such accelerated vesting is precluded by other limitations
      imposed by the Plan Administrator at the time the repurchase right is
      issued.

            B. The Plan Administrator may at any time provide for the automatic
      termination of one or more of those outstanding repurchase rights and the
      immediate vesting of the



                                       12


      shares of Common Stock subject to those terminated rights upon (i) a
      Change in Control or Hostile Take-Over or (ii) an Involuntary Termination
      of the Participant's Service within a designated period (not to exceed
      eighteen (18) months) following the effective date of any Change in
      Control or Hostile Take-Over in which those repurchase rights are assigned
      to the successor corporation (or parent thereof) or otherwise continue in
      full force and effect.

      III.  SHARE ESCROW/LEGENDS

            Unvested shares may, in the Plan Administrator's discretion, be held
in escrow by the Corporation until the Participant's interest in such shares
vests or may be issued directly to the Participant with restrictive legends on
the certificates evidencing those unvested shares.



                                       13


                                  ARTICLE FIVE

                         AUTOMATIC OPTION GRANT PROGRAM

                             Intentionally Omitted.













                                       14


                                   ARTICLE SIX

                                  MISCELLANEOUS

      I.    NO IMPAIRMENT OF AUTHORITY

            Outstanding awards shall in no 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.

      II.   FINANCING

            The Plan Administrator may permit any Optionee or Participant to pay
the option exercise price under the Discretionary Option Grant Program or the
purchase price of shares issued under the Stock Issuance Program by delivering a
full-recourse, interest bearing promissory note payable in one or more
installments. The terms of any such promissory note (including the interest rate
and the terms of repayment) shall be established by the Plan Administrator in
its sole discretion. In no event may the maximum credit available to the
Optionee or Participant exceed the sum of (i) the aggregate option exercise
price or purchase price payable for the purchased shares plus (ii) any Federal,
state and local income and employment tax liability incurred by the Optionee or
the Participant in connection with the option exercise or share purchase.

      III.  TAX WITHHOLDING

            A. The Corporation's obligation to deliver shares of Common Stock
      upon the exercise of options or the issuance or vesting of such shares
      under the Plan shall be subject to the satisfaction of all applicable
      Federal, state and local income and employment tax withholding
      requirements.

            B. The Plan Administrator may, in its discretion, provide any or all
      holders of Options or unvested shares of Common Stock under the Plan with
      the right to use shares of Common Stock in satisfaction of all or part of
      the Taxes incurred by such holders in connection with the exercise of
      their options or the vesting of their shares. Such right may be provided
      to any such holder in either or both of the following formats:

                  STOCK WITHHOLDING: The election to have the Corporation
withhold, from the shares of Common Stock otherwise issuable upon the exercise
of such Option or the vesting of such shares, a portion of those shares with an
aggregate Fair Market Value equal to the percentage of the Taxes (not to exceed
one hundred percent (100%)) designated by the holder.

                  STOCK DELIVERY: The election to deliver to the Corporation, at
the time the Option is exercised or the shares vest, one or more shares of
Common Stock previously acquired by such holder (other than in connection with
the option exercise or share vesting triggering the Taxes) with an aggregate
Fair Market Value equal to the percentage of the Taxes (not to exceed one
hundred percent (100%)) designated by the holder.



                                       15


      IV.   EFFECTIVE DATE AND TERM OF THE PLAN

            A. The Plan shall become effective immediately upon the Plan
      Effective Date. Options may be granted under the Discretionary Option
      Grant Program at any time on or after the Plan Effective Date.

            B. The Plan shall terminate upon the EARLIEST of (i) January 16,
      2011, (ii) the date on which all shares available for issuance under the
      Plan shall have been issued as fully-vested shares; (iii) the termination
      of the Plan by the Board or (iv) the termination of all outstanding
      options in connection with a Change in Control. Upon such plan
      termination, all outstanding options and unvested stock issuances shall
      thereafter continue to have force and effect in accordance with the
      provisions of the documents evidencing such grants or issuances.

      V.    AMENDMENT OF THE PLAN

            A. The Board shall have complete and exclusive power and authority
      to amend or modify the Plan in any or all respects. However, no such
      amendment or modification shall adversely affect the rights and
      obligations with respect to stock options or unvested stock issuances at
      the time outstanding under the Plan unless the Optionee or the Participant
      consents to such amendment or modification.

      VI.   USE OF PROCEEDS

            Any cash proceeds received by the Corporation from the sale of
shares of Common Stock under the Plan shall be used for general corporate
purposes.

      VII.  REGULATORY APPROVALS

            A. The implementation of the Plan, the granting of any stock option
      under the Plan and the issuance of any shares of Common Stock (i) upon the
      exercise of any granted option or (ii) under the Stock Issuance Program
      shall be subject to the Corporation's procurement of all approvals and
      permits required by regulatory authorities having jurisdiction over the
      Plan, the stock options granted under it and the shares of Common Stock
      issued pursuant to it.

            B. No shares of Common Stock or other assets shall be issued or
      delivered under the Plan unless and until there shall have been compliance
      with all applicable requirements of Federal and state securities laws,
      including the filing and effectiveness of the Form S-8 registration
      statement for the shares of Common Stock issuable under the Plan, and all
      applicable listing requirements of any stock exchange (or the Nasdaq
      National Market, if applicable) on which Common Stock is then listed for
      trading.

      VIII. NO EMPLOYMENT/SERVICE RIGHTS

            Nothing in the Plan shall confer upon the Optionee or the
Participant any right to continue in Service for any period of specific duration
or interfere with or otherwise restrict in any way the rights of the Corporation
(or any Parent or Subsidiary employing or retaining such



                                       16


person) or of the Optionee or the Participant, which rights are hereby expressly
reserved by each, to terminate such person's Service at any time for any reason,
with or without cause.



















                                       17






                                    APPENDIX


            The following definitions shall be in effect under the Plan:

            A. BENEFICIARY shall mean, in the event the Plan Administrator
      implements a beneficiary designation procedure, the person designated by
      an Optionee or Participant, pursuant to such procedure, to succeed to such
      person's rights under any outstanding awards held by him or her at the
      time of death. In the absence of such designation or procedure, the
      Beneficiary shall be the personal representative of the estate of the
      Optionee or Participant or the person or persons to whom the award is
      transferred by will or the laws of descent and distribution.

            B. BOARD shall mean the Corporation's Board of Directors.

            C. CHANGE IN CONTROL  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 accept.

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

            E. COMMON STOCK shall mean the Corporation's common stock.

            F. CORPORATION shall mean Juno Online Services, Inc., a Delaware
      corporation, and its successors.

            G. DISCRETIONARY OPTION GRANT PROGRAM shall mean the discretionary
      option grant program in effect under the Plan.



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            H. EMPLOYEE shall mean an individual who is in the employ of the
      Corporation (or any Parent or Subsidiary), subject to the control and
      direction of the employer entity as to both the work to be performed and
      the manner and method of performance.

            I. EXERCISE DATE shall mean the date on which the Corporation shall
      have received written notice of the option exercise.

            J. 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 such price is
      reported 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.

            K. 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 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 does not
      recommend such stockholders to accept, or

                  (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.

            L. INVOLUNTARY TERMINATION shall mean the termination of the Service
      of any individual which occurs by reason of:



                                      A-2


                  (i) such individual's involuntary dismissal or discharge by
      the Corporation for reasons other than Misconduct, or

                  (ii) such individual's voluntary resignation following (A) a
      change in his or her position with the Corporation or Parent or Subsidiary
      employing the individual which materially reduces his or her duties and
      responsibilities or the level of management to which he or she reports,
      (B) a reduction in his or her level of compensation (including base
      salary, fringe benefits and target bonus under any performance based bonus
      or incentive programs) by more than fifteen percent (15%) or (C) a
      relocation of such individual's place of employment by more than fifty
      (50) miles, provided and only if such change, reduction or relocation is
      effected by the Corporation without the individual's consent.

            M. MISCONDUCT shall mean the commission of any act of fraud,
      embezzlement or dishonesty by the Optionee or Participant, any
      unauthorized use or disclosure by such person of confidential information
      or trade secrets of the Corporation (or any Parent or Subsidiary), or any
      intentional wrongdoing by such person, whether by omission or commission,
      which adversely affects the business or affairs of the Corporation (or any
      Parent or Subsidiary) in a material manner. This shall not limit the
      grounds for the dismissal or discharge of any person in the Service of the
      Corporation (or any Parent or Subsidiary).

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

            O. NON-STATUTORY OPTION shall mean an option not intended to satisfy
      the requirements of Code Section 422.

            P. 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.

            Q. OPTIONEE shall mean any person to whom an option is granted under
      the Discretionary Option Grant Program.

            R. PARENT shall mean any entity that directly or indirectly
      possesses the power to direct or cause the direction of the management or
      policies of the Corporation, whether through ownership of voting
      securities, by contract or otherwise.

            S. PARTICIPANT shall mean any person who is issued shares of Common
      Stock under the Stock Issuance Program.

            T. PLAN shall mean the Corporation's 2001 Supplemental Stock
      Incentive Plan, as set forth in this document.

            U. PLAN ADMINISTRATOR shall mean the particular entity, whether the
      Primary Committee, the Board or the Secondary Committee, which is
      authorized to administer the



                                      A-3


      Plan with respect to one or more classes of eligible persons, to the
      extent such entity is carrying out its administrative functions under
      those programs with respect to the persons under its jurisdiction.
      However, the Primary Committee shall have the plenary authority to make
      all factual determinations and to construe and interpret any and all
      ambiguities under the Plan to the extent such authority is not otherwise
      expressly delegated to any other Plan Administrator.

            V. PLAN EFFECTIVE DATE shall mean January 16, 2001, the date on
      which the Plan was adopted by the Board.

            W. PRIMARY COMMITTEE shall mean the committee of two (2) or more
      non-employee Board members appointed by the Board to have primary
      responsibility for the administration of the Plan.

            X. SECONDARY COMMITTEE shall mean a committee of one or more Board
      members appointed by the Board to have secondary responsibility for the
      administration of the Plan.

            Y. SECTION 16 INSIDER shall mean an officer or director of the
      Corporation subject to the short-swing profit liabilities of Section 16 of
      the 1934 Act.

            Z. SERVICE shall mean the performance of services for the
      Corporation (or any Parent or Subsidiary) by a person in the capacity of
      an Employee, a non-employee member of the board of directors or a
      consultant or independent advisor, except to the extent otherwise
      specifically provided in the documents evidencing the option grant or
      stock issuance.

            AA. STOCK EXCHANGE shall mean either the American Stock Exchange or
      the New York Stock Exchange.

            BB. STOCK ISSUANCE PROGRAM shall mean the stock issuance program in
      effect under the Plan. CC. SUBSIDIARY shall mean any entity in which the
      Corporation possesses, directly or indirectly, the power to direct or
      cause the direction of the management or policies, whether through
      ownership of voting securities, by contract or otherwise.

            DD. TAXES shall mean the Federal, state and local income and
      employment withholding tax liabilities incurred by the holder of
      Non-Statutory Options or unvested shares of Common Stock in connection
      with the exercise of those options or the vesting of those shares.



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