EXHIBIT 4.21


                            [LETTERHEAD OF INSYNQ]
                       Your Internet Utility Company(TM)


September 22, 2000


     RE: Extension of the filing by Insynq, Inc. (the "Company") of the
     Registration Statement on Form SB-2 (the "Registration Statement")

To the parties attached on Exhibit A hereto:
                           ---------

     Due to our need for additional financing, we request that you, the
undersigned stockholder of the Company, agree to extend the filing date of the
Registration Statement which is required under your applicable Registration &
Repurchase Agreement to October 3, 2000.

          If you agree to this extension, please sign below and return this
executed letter to Lisa A. Genecov, Locke Liddell & Sapp LLP, 2200 Ross Avenue,
Suite 2200, Dallas, Texas, 75201.

                                        Best Regards,

                                        //s// John P. Grost

                                        John P. Gorst
                                        President and Chief Executive Officer


The undersigned hereby consents to extend the filing of the Registration
Statement to October 3, 2000.


                                             /s/ Anthony Heller
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                                        By: ____________________________________
                                        Name: Anthony Heller
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                                        Title: President
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