Release Notes
04/26/2021
April 26, 2021 Release Notes (Change 1.0)

This document details software updates for Monday, April 26, 2021.  Impacted Commercial Systems include:

  • PostalOne! System Release 52.1.0.1
User Guides
04/26/2021
Mailing and Shipping Solutions Center (MSSC) Topics

List of topics the MSSC can assist with. To reach the MSSC, email us at MSSC@usps.gov or call 1-877-672-0007 from 7:00AM – 7:00PM CT.

Release Notes
04/25/2021
April 25, 2021 Release Notes (Change 5.0)

This document details software updates for Sunday, April 25, 2021.  Impacted Commercial Systems include:

  • PostalOne! System Release 52.1.0.0 *
  • Business Intelligence Database System (BIDS) Release 52.1.0.0
  • Enterprise Payment System (EPS) Release 4.3.0.0
  • Facility Access and Shipment Tracking (FAST) Release 48.0.0.4

*REMINDERPostalOne! Release 52.1.0.0 includes a NEW REQUIRED Mail.dat client.  Users should download Mail.dat client 52.1.0.0_PROD, from the Business Customer Gateway (BCG) using the following path: Mailing Services è Electronic Data Exchange [Go to Service] è Mail.dat download (Windows 32-bit, Windows 64-bit or Solaris).