DELIVERY - INTERNATIONAL SERVICE SUSPENSION NOTICE – Effective June 20, 2025

PostalOne! Release 62.0.0.0 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 62.0.0.0

PostalOne! Release 62.0.0.0 Mail.XML PrePROD WSDLs

PostalOne! Release 62.0.0.0 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 62.0.0.0

PostalOne! Release 62.0.0.0 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 62.0.0.0

Priority Mail Next Day/Post Host Release Overview

INFORMATIONAL - USPS APIs System Maintenance

Post Office/ZIP Code Entries for Postal Bulletin 6/26/2025

This spreadsheet provides details on the Post Office/ZIP Code entry changes for Postal Bulletin issue 6/26/2025.

The 2025 PCC Health Check Survey Launch

Provisioning Informed Delivery® Post-Campaign (IDPC) Data in Informed Visibility® Mail Tracking & Reporting (IV®-MTR)

This guide provides instructions for receiving Informed Delivery Post-Campaign (IDPC) detailed data through the IV Mail Tracking & Reporting (IV-MTR) application. Instructions include how to access the application, create a one-time query, create and manage a data feed, manage the address book, and manage data delegation.