2.4 Production R48.0.0.0

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

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.

Mail.dat Technical Specifications R47.1.0.0 (Version 2)

Version 2 of the comprehensive technical guide that outlines steps for exchanging electronic data with the PostalOne! System.

Mail.XML Technical Specifications R47.1.0.0 (Version 2)

Version 2 of the comprehensive technical guide that outlines steps for exchanging electronic data with the PostalOne! System.

Mail.XML Technical Specifications R47.1.0.0 (Version 1)

Version 1 of the comprehensive technical guide that outlines steps for exchanging electronic data with the PostalOne! System.

3/25/2018

Mail.dat Technical Specifications R47.1.0.0 (Version 1)

Version 1 of the comprehensive technical guide that outlines steps for exchanging electronic data with the PostalOne! System.

3/25/2018

Mail.dat Technical Specifications R47 V4

Version 4 of the comprehensive technical guide that outlines steps for exchanging electronic data with the PostalOne! system.

Postal Service Mail.dat Tech Specs Version 2 Release 46

Mail.dat Tech Spec R45.2.0.0 Version 1

Postal Service Mail.dat Technical Specification Version 1 Release 44

Postal Service Mail.dat Technical Specification Version 1 (R44) is a comprehensive technical guide that outlines steps for exchanging electronic data with the PostalOne! ® system using the Mail.dat® file format.