Release Notes
11/18/2019
Enterprise Payment System (EPS) Release 3.10.0.1 Release Notes (Change 3.0)
Release Notes
10/27/2019
PostalOne! System Release 49.2.0.2 Post-Release Notes (Change 2.0)
Release Notes
10/23/2019
PostalOne! System Release 49.2.0.1 Release Notes (Change 1.0)
Release Notes
10/10/2019
January 2020 Competitive Release Overview
Release Notes
10/06/2019
PostalOne! System Release 49.1.1.1
Release Notes
09/19/2019
January 2020 Market Dominant Release Overview
Release Notes
02/01/2019
PostalOne! R48.0.1.2 Pre-Release Notes Change 1.0
Release Notes
11/26/2018
2.3 Pre-Production R48.0.0.0

This section describes the Mail.XML WSDLs that are supported in the Pre-Production Environment.

Release Notes
11/26/2018
2.2 TEM R48.0.0.0

The USPS Test Environment for Mailers (TEM) is the dedicated Mail.XML test environment that is required for all new customers, as well as users migrating to a different electronic documentation (eDoc), to test their desired Mail.XML version in. TEM simulates the Production environment, and completion of TEM testing is required for access to the Production environment. 

Release Notes
11/20/2018
PostalOne! R47.4.1.1 Post-Release Notes Change 2.0