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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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We have been using the AccuZIP software for over seven years now. I believe that being an AccuZIP customer is one of the reasons for our success. Every time a question has arose, AccuZIP answered it completely and competently. When the post office did not have an answer for us AccuZIP did. If there was ever any conflicting info between the Post Office and AccuZIP, our AccuZIP customer service rep was always correct. We have experienced only excellent customer service. Let me make that clear not good customer service, excellent customer service.
C.M., Show Low, AZ