Announcements
12/08/2025
PAVE™ 2026 Advisory Cycle S Extension

This advisory is to inform you that there will be no PAVE Cycle S/MAC Batch Certification testing for the 2026 Price Change releases. USPS has decided to extend the current PAVE process until January 19, 2027, and will not be testing or accepting files for testing during the transition into 2026.

Technical Specifications
12/05/2025
Data Files
12/03/2025
Data Files
12/03/2025
NCOALink® Statistics

This spreadsheet includes NCOALink statistics from 2007-2025 by licensee type.

Announcements
12/02/2025
FAQs
12/01/2025
Publications
12/01/2025
Data Files
12/01/2025
November 2025 Nixie Volume

This spreadsheet contains the UAA statistics for November 2025.

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

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

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

Presentations
11/25/2025
Presentations
11/25/2025