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USPS PostalOne! 2023 Updates

On Sunday, January 8, 2023, the United States Postal Service implemented the following software changes:

— PostalOne! System Release 57.0.0.0
— Enterprise Payment System (EPS/eBill) Release 5.0.0.0
— USPS Ship (Package Platform) Release 7.0.0.0
— Program Registration Release 24.0.0.0
— Facility Access and Shipment Tracking (FAST) Release 57.0.0.0

Click for January 8, 2023 Releases PDF

There is a new Required Mail.dat client with this release. Users should download Mail.dat client 57.0.0.0_PROD from the Business Customer Gateway (BCG).

Click to download Updated Mail.dat Technical Guide

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