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Mail.dat Editor

Manage and Edit Mail.dat® files with the Mail.dat Editor add-on module for AccuZIP6 (Coming Soon)

If you process or edit Mail.dat files after the presort process, you need this add-on!


  • Upload a job to PostalOne!®
  • Cancel a job on PostalOne!
  • Delete a job on PostalOne!
  • Edit any AccuZIP6-generated Mail.dat file
  • Change mailing date
  • Change piece weight
  • Split a mailing into two or more parts



  • Seamlessly integrated into AccuZIP6, the Mail.dat Editor eliminates the need for costly and cumbersome third-party editors!
  • Eliminate re-running presorts to deal with last minute changes
  • Take advantage of productivity improvements resulting from electronic transactions with the USPS®
  • Electronically edit Mail.dat in an easy-to-use UI to reduce time and labor
  • Update/edit piece weight to reflect final mailing
  • Validation upon PostalOne! upload to help prevent Mailer Scorecard assessments
  • Provides a solution that is technically competent but familiar and easy to use
  • Employees can get up to speed with the Mail.dat Editor quickly because they are already familiar with AccuZIP6!

Free Consultation and Demo

Fill out the form below to have an AccuZIP product specialist contact you to discuss your mailing environment. Our product specialists will discuss your unique mailing needs and identify how the AccuZIP6 Mail.Dat Editor can improve your efficiency and profitability.


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Prior to Accuzip we used SAP Postalsoft. We looked for its replacement and chose Accuzip based on testimonials of how great customer service was and on pricing which was very attractive. Best move we've ever made in software and you folks live up to all the good things I heard. I still get calls every 6 months from FirstLogic ( a distributer of the old Postalsoft and others) to see if I'm still happy with Accuzip. I always say the same thing: Yes, very happy. Thanks for checking in.
B.H., Newtown, PA