We are a small company. We prefer that you contact us by email:

Polytrope Support, mainly for CMAssistant and Goodbooks licensees: support (at) polytrope (dot) com

William Porter: wp (at) polytrope (dot) com

If you are writing for support, it is to your advantage as well as ours for you to write to the support email address, as those messages often get a quicker reply than personal emails.

If a phone call works better for you, ring away: 469-248-7553. Our snail mail address is: PO Box 181948, Dallas, TX 75218.

When writing, please be sure to tell us (1) what you are writing about and (2) your phone number so we can call you back if a phone call seems appropriate. And if you are writing about CMAssistant or Goodbooks, then (3) mention what version you have.