Use Complete Postal Library™ with its easily searchable electronic DMM and IMM to quickly find the latest Postal rates, rules, and regulations for preparing your mail properly.
NOTE: For the most complete and up-to-date requirement information, refer to the "Window Book Product Requirements Guide."
Window Book, Inc. will soon require you to login in order to download our software.
If you already have an account, GREAT! Simply enter your login credentials when prompted. If you do not have an account and would like to establish one before the deadline please REGISTER USING THIS LINK.. Registration is fast and easy.
This change will take effect on September 21st, 2017. Thank you for your cooperation.