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DAT-MAIL Prep™ Software Update

New from Window Book -- DAT-MAIL Prep™ is a simple, fast, easy to use tool that helps you quickly configure your Mail.dat® files BEFORE you import them into ANY post-presort software. Now you can control exactly how your Mail.dat® files should be configured via high-speed pre-processing functions. Save time configuring the data within your Mail.dat® editing software.

Learn More about DAT-MAIL Prep


NOTE: For the most complete and up-to-date requirement information, refer to the "Window Book Product Requirements Guide."

Download DAT-MAIL Prep™ (64-bit)
Release Notes

All Release Notes


    Important Messages:





    Known Issues:








    B20138, B20471, B20474:  Changes made in support of the new Mail.dat 21-1 spec, including updates and bug fixes as of 2/11/2021 to Merger/Splitter functions.



    Bug Fixes: