Tech Guides
11/26/2025
PostalOne! Release 63.0.0.0 Mail.XML PrePROD WSDLs
Tech Guides
11/26/2025
PostalOne! Release 63.0.0.0 Mail.XML PROD WSDLs

This ZIP file contains the Web Services Description Language (WSDL) and XML Schema Definition (XSD) files for Mail.XML™ PROD Release 63.0.0.0

Tech Guides
11/26/2025
PostalOne! Release 63.0.0.0 Mail.XML CAT WSDLs

This ZIP file contains the Web Services Description Language (WSDL) and XML Schema Definition (XSD) files for Mail.XML™ CAT Release 63.0.0.0

Tech Guides
10/06/2025
Dimensioned Layouts for the Container Barcode Formats
Tech Guides
10/06/2025
Intelligent Mail Container Barcode Technical Specifications

Technical specifications for printing the USPS Intelligent Mail® Container barcode (IM™ Container barcode). The Intelligent Mail Container barcode is used on mailer-generated pallet labels to uniquely identify pallets and similar containers (i.e. All Purpose Containers, hampers, pallet boxes, etc.) in addition to identifying the mail owner.