Document:

<PAGE>

                              AMENDMENT AND WAIVER

     THIS AMENDMENT AND WAIVER, dated as of June 7, 2000 (this "Amendment"),
                                                                ---------
relating to the Credit Agreement referenced below, is by and among Snyder
Communications, Inc., a Delaware corporation (the "Borrower"), the Subsidiaries
                                                   --------
of the Borrower identified as Guarantors identified on the signature pages
hereto, the Lenders identified on the signature pages hereto, and Bank of
America, N.A., as Administrative Agent (the "Administrative Agent").  Terms used
                                             --------------------
herein but not otherwise defined herein shall have the meanings provided to such
terms in the Credit Agreement.

                              W I T N E S S E T H

     WHEREAS, a $195 million credit facility has been extended to the Borrower
pursuant to the terms of that Credit Agreement, dated as of August 27, 1999 (as
amended and modified from time to time, the "Credit Agreement") among the
                                             ----------------
Borrower, the Subsidiaries of the Borrower identified therein as Guarantors, the
Lenders identified therein, and Bank of America, N.A., as Administrative Agent;

     WHEREAS, the Borrower has requested certain modifications to the Credit
Agreement;

     WHEREAS, the Required Lenders have agreed to provide the requested
modifications on the terms and conditions set forth herein;

     NOW, THEREFORE, IN CONSIDERATION of the premises and other good and
valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the parties hereto agree as follows:

     1.  The Required Lenders hereby waive any Default or Event of Default which
existed or may have existed prior to the effective date of this Amendment solely
on account of (i) noncompliance with the Consolidated Total Leverage Ratio under
Section 7.11(a) of the Credit Agreement for the fiscal quarter of the Borrower
ended March 31, 2000; and (ii) noncompliance with the minimum Consolidated
EBITDA under Section 7.11(d) of the Credit Agreement for the fiscal quarter of
the Borrower ended March 31, 2000.

     2.    The Credit Agreement is hereby amended in the following respects:

     2.1.  Section 7.11(a) of the Credit Agreement is hereby amended to read as
     follows:

           (a) Consolidated Total Leverage Ratio. As of the end of each fiscal
               ----------------------------------
           quarter, the Consolidated Total Leverage Ratio shall be not greater
           than (a) for the fiscal quarter ending June 30, 2000, 3.0:1.0 and (b)
           for each fiscal quarter ending thereafter, 2.5:1.0.

     2.2.  Section 7.11(d) of the Credit Agreement is hereby amended to read as
     follows:

           (d) Consolidated EBITDA.  As of the end of each fiscal quarter, the
               -------------------
           Consolidated EBITDA for the period of four consecutive fiscal
           quarters ending as of such day shall not be less than (a) for the
           fiscal quarter ending June 30, 2000, $65,000,000, and (b) for each
           fiscal quarter ending thereafter, $80,000,000.
<PAGE>

     3.  The Borrower hereby agrees that, notwithstanding the terms of Section
8.7 of the Credit Agreement, at any time prior to July 1, 2000, the Borrower
will not make, or permit any member of the Consolidated Group to make, any
Restricted Payment.

     4.  The Borrower hereby represents and warrants in connection herewith that
as of the date hereof (after giving effect hereto) (i) the representations and
warranties set forth in the Credit Documents are true and correct in all
material respects (except those which expressly relate to an earlier date), and
(ii) after giving effect to this Amendment, no Default or Event of Default
exists under the Credit Agreement.

     5.  Except as expressly modified hereby, all of the terms and provisions of
the Credit Agreement and the other Credit Documents remain in full force and
effect.

     6.  The Borrower agrees to pay all reasonable costs and expenses in
connection with the preparation, execution and delivery of this Amendment,
including the reasonable fees and expenses of the Administrative Agent's legal
counsel.

     7.  This Amendment may be executed in any number of counterparts, each of
which when so executed and delivered shall be deemed an original.  It shall not
be necessary in making proof of this Amendment to produce or account for more
than one such counterpart.

     8.  This Amendment shall be deemed to be a contract under, and shall for
all purposes be construed in accordance with, the laws of the State of New York.

                  [Remainder of Page Intentionally Left Blank]

                                       2
<PAGE>

      IN WITNESS WHEREOF, each of the parties hereto has caused a counterpart of
this Amendment to be duly executed and delivered as of the date first above
written.

BORROWER:                           SNYDER COMMUNICATIONS, INC.,
--------
                                    a Delaware corporation

                                    By:_____________________________
                                    Name:  A. Clayton Perfall
                                    Title: Chief Financial Officer

GUARANTORS:                         AMERICAN STUDENT LIST CO. INC.,
----------
                                    a New York corporation

                                    By:_____________________________
                                    Name:  Don Damore
                                    Title: President

                                    BLAU MARKETING TECHNOLOGIES, INC.,
                                    a Delaware corporation

                                    By:_____________________________
                                    Name:  Fred Kaseff
                                    Title: Chief Financial Officer

                                    BROADWELL MARKETING GROUP, INC.,
                                    a Texas corporation

                                    By:_____________________________
                                    Name:  David Kirwan
                                    Title: Chief Executive Officer

                                    MEDIA SYNDICATION GLOBAL, INC.,
                                    a New York corporation

                                    By:_____________________________
                                    Name:  A. Clayton Perfall
                                    Title: Chief Financial Officer

                                    NATIONAL SALES SERVICES, INC.,
                                    a Delaware corporation

                                    By:_____________________________
                                    Name:  Lawrence W. Chapman
                                    Title: President

                           [Signature Pages Continue]

                                       3
<PAGE>

                                   NATURAL INTELLIGENCE, INC.,
                                   a Massachusetts corporation

                                   By:______________________________
                                   Name:  Joshua D. Wachs
                                   Title: President

                                   RESPONSE MARKETING GROUP, LLC,
                                   a Georgia limited liability company

                                   By:______________________________
                                   Name:  Peter A. Trost, III
                                   Title: President

                                   SNYDER MARKETING SERVICES, INC.,
                                   a Delaware corporation

                                   By:______________________________
                                   Name:  A. Clayton Perfall
                                   Title: Chief Financial Officer

                                   SAMPLING CORPORATION OF AMERICA,
                                   a Illinois corporation

                                   By:______________________________
                                   Name:  A. Clayton Perfall
                                   Title: Chief Financial Officer

                                   SNYDER DIRECT SERVICES, INC.,
                                   a Delaware corporation

                                   By:______________________________
                                   Name:  A. Clayton Perfall
                                   Title: Treasurer

                                   TSUNAMI CONSULTING GROUP, INC.,
                                   a Colorado corporation

                                   By:______________________________
                                   Name:  Glenn J. Miller
                                   Title: President

                           [Signature Pages Continue]

                                       4
<PAGE>

                                   ARNOLD COMMUNICATIONS, INC.,
                                   a Massachusetts corporation

                                   By:______________________________
                                   Name:  Ed Eskandarian
                                   Title: President

                           [Signature Pages Continue]

                                       5
<PAGE>

LENDERS:                           BANK OF AMERICA, N.A.,
-------
                                   individually in its capacity as a Lender and
                                   in its capacity as Administrative Agent

                                   By:______________________________
                                   Name:
                                   Title:

                                   THE FIRST NATIONAL BANK OF CHICAGO

                                   By:______________________________
                                   Name:
                                   Title:

                                   BANKERS TRUST COMPANY

                                   By:______________________________
                                   Name:
                                   Title:

                                   THE CHASE MANHATTAN BANK

                                   By:______________________________
                                   Name:
                                   Title:

                                   FIRST UNION NATIONAL BANK

                                   By:______________________________
                                   Name:
                                   Title:

                                   CRESTAR BANK

                                   By:______________________________
                                   Name:
                                   Title:

                                       6EXHIBIT 7
                          Copy of Mann Stock Specimen

                     INCORPORATED IN THE STATE OF DELAWARE

NUMBER                                          FULLY PAID NON-ASSESSABLE SHARES
 515                                                        170000**

                              MAIN ENTERPRISE INC.

20,000,000 SHARES AUTHORIZED                                     $.001 PAR VALUE

THIS  CERTIFIES  THAT:  NICK MIHAEL is the  registered  holder of 170,000 SHARES
transferable only on the books of the Corporation by the holder hereof in person
or by Attorney upon surrender of this certificate properly endorsed

IN WITNESS  WHEREOF,  the said  Corporation  has caused this  Certificate  to be
signed by its duly  authorized  officers and its  Corporate  Seal to be hereunto
affixed this 14th day of October A.D. 1996

By: /s/ Morris Diamond                     By: /s/ Shirley Diamond
----------------------                     -----------------------
        Morris Diamond, President                  Shirley Diamond, Secretary

                        (SEAL OF INCORPORATION OMITTED)

The Shares  represented by this  certificate  have not been registered under the
U.S.  Securities  Act of 1933,  as amended.  The Shares have been  acquired  for
investment and may not be sold,  transferred,  pledged,  or  hypothecated in the
absence of an  effective  registration  statement  for the Shares under the U.S.
Securities Act of 1933, as amended or an opinion of counsel that registration is
not required under said Act."

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