EXHIBIT 99.1



                                   @PLAN.INC
         PROXY FOR SPECIAL MEETING OF SHAREHOLDERS -- February 2, 2001
          (THIS PROXY IS SOLICITED BY THE BOARD OF DIRECTORS OF @PLAN)



The undersigned shareholder of @plan.inc hereby appoints Mark K. Wright and
Nancy A. Lazaros, and each of them, with full power of substitution, proxies to
vote the shares of stock which the undersigned could vote if personally present
at the Special Meeting of Shareholders of @plan.inc to be held at 10:00 a.m.,
local time, on February 2, 2001, at The Westin Stamford Hotel, 1 First Stamford
Place Stamford, Connecticut 06902.


1. APPROVAL OF THE AMENDED AND RESTATED MERGER AGREEMENT AMONG DOUBLECLICK INC.,
   ATLAS MERGER SUB, INC., @PLAN.INC AND ATLAS ACQUISITION CORP.
      [ ]   FOR              [ ]   AGAINST             [ ]   ABSTAIN

2. GRANTING THE BOARD OF DIRECTORS DISCRETIONARY AUTHORITY TO ADJOURN THE
   SPECIAL MEETING TO SOLICIT ADDITIONAL VOTES FOR APPROVAL OF THE AMENDED AND
   RESTATED MERGER AGREEMENT
      [ ]   FOR              [ ]   AGAINST             [ ]   ABSTAIN

3. IN THEIR DISCRETION UPON SUCH OTHER MATTERS AS MAY PROPERLY COME BEFORE THE
   MEETING
      [ ]   FOR              [ ]   AGAINST             [ ]   ABSTAIN







                       [FORM OF BACK OF @PLAN PROXY CARD.]



   UNLESS OTHERWISE SPECIFIED, THIS PROXY WILL BE VOTED FOR PROPOSAL 1 AND
   PROPOSAL 2.

   Please date and sign exactly as your name appears on the envelope in which
   this material was mailed. If shares are held jointly, each stockholder should
   sign. Executors, administrators, trustees, etc. should use full title and, if
   more than one, all should sign. If the shareholder is a corporation, please
   sign full corporate name by an authorized officer. If the shareholder is a
   partnership, please sign full partnership name by an authorized person.

                                               ---------------------------------
                                               Name(s) of Shareholder

                                               ---------------------------------
                                               Signature(s) of Shareholder


   Dated: