Exhibit 4 ACCESSION AGREEMENT

                                                                      Exhibit 4
                               ACCESSION AGREEMENT


         AGREEMENT (this "Agreement"), dated as of the 27th day of November
2001, by and among EasyLink Services Corporation, a Delaware corporation (the
"Company"), and the undersigned securityholder or securityholders (the "New
Holder").

         WHEREAS, the Company is a party to a certain Registration Rights
Agreement, a copy of which is attached hereto (the "Registration Rights
Agreement"); and

         WHEREAS, the Company and the New Holder are parties to a Modification
Agreement dated as of June 1, 2001 (the "Modification Agreement"); and

         WHEREAS, the Company desires to grant to the New Holder certain
registration rights with respect to all shares of Class A common stock issuable
under or in connection with the Modification Agreement or under securities
issuable under or in connection with the Modification Agreement, all on the
terms and conditions set forth in the Registration Rights Agreement; and

         WHEREAS, the Company desires that each New Holder become a Holder under
the Registration Rights Agreement, and be bound by the terms and obligations and
be entitled to the same rights and benefits of the Holders set forth in the
Registration Rights Agreement;

         NOW, THEREFORE, in consideration of the promises and mutual agreements
hereinafter contained, the parties hereto do hereby agree as follows:

SECTION 1 AGREEMENT TO BE BOUND BY THE REGISTRATION RIGHTS AGREEMENT

         1.1 DEFINED TERMS. Except as set forth herein, the capitalized terms
contained in this Agreement shall have the respective meanings ascribed to such
terms in the Registration Rights Agreement.

         1.2. AGREEMENT TO BE BOUND BY THE REGISTRATION RIGHTS AGREEMENT. The
New Holder shall be deemed to become a Holder under the Registration Rights
Agreement, and, as such, agrees to be bound by the terms and conditions of, and
shall be entitled to the rights and benefits under the Registration Rights
Agreement.







         WHEREAS, the undersigned have executed this Accession Agreement as of
the date first above written.


                                EASYLINK SERVICES CORPORATION


                                By: /s/ Xxxxxx Xxx Xxxx
                                   -------------------------------------------
                                Xxxxxx Xxxxxx, Chairman


                                Name of New Holder:

                                Xxxxxx Xxx Xxxx
                                ----------------------------------------------


                                By: /s/ Xxxxxx Xxx Xxxx
                                    ------------------------------------------
                                Name: Xxxxxx Xxx Xxxx
                                Title:


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