Window Book has helped clients manage their operations more profitably since 1989.  A leader in mailing and shipping software for Lettershops, Corporate Mailers, Service Bureaus, and Mail Owners. 

Window Book’s best-in-class postal solutions include: Intelligent Mail Full Service, PostalOne!, eDocs, Mail.dat®, Mail.XML, FAST, Bound Printed Matter, post-presort data management, entry planning, drop shipping, postage accounting, postal documentation & statements, meter and stamp management, Express Mail and Priority Mail Open and Distribute, New Commercial Plus rates, eVS, delivery confirmation, and manifesting shipping system.