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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



This is a Mandatory Release for compliance with the Rate changes going into effect January 22,2023


Known Issues:




T23587, T24121, T24123, T24124, T24126, T24127, T24129, T24211, T24425, T24431, T24444, T24446, T24479, B24597, B24614, T24623, T24639, T24640, T24641, B24674, B24675, T24678, T24679, B24680, T24682, T24683, B24687, T24700, B24713, B24825, T24578:  Support has been added in DAT-MAIL Prep for the Mail.dat version 23-1 specification.


Bug Fixes: