Technical Specifications
11/30/2018
Mail.XML Technical Specifications R48 (Version 3)

Version 3 of the comprehensive technical guide that outlines steps for exchanging electronic data with the PostalOne! System.

Technical Specifications
11/30/2018
Mail.dat Technical Specifications R48 (Version 3)

Version 3 of the comprehensive technical guide that outlines steps for exchanging electronic data with the PostalOne! System.

Technical Specifications
11/26/2018
2.4 Production R48.0.0.0

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

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. 

Technical Specifications
11/26/2018
2.1 CAT R48.0.0.0

This section describes the Mail.XML WSDLs that are supported in the CAT Environment. These WSDLs are for the upcoming release and are accessible and available only for the selected mailers who participate in USPS CAT certification phase. These WSDLs are subject to be revised at any time without notice. It is recommended for the mailers not to use these WSDLs unless participating in the CAT phase.

Data Files
11/20/2018
Tools
11/19/2018