Announcements
06/24/2026
INFORMATIONAL - Enterprise Payment System (EPS) – INCIDENT #10784524 Processing Postage Statement Error
Publications
06/24/2026
MGI Credit Claim Request Deck
Data Files
06/24/2026
Updated List: Service Type Codes for Intelligent Mail® Package Barcode (IMpb)

This document provides the updated service type codes for  Intelligent Mail® Package Barcodes.

Announcements
06/23/2026
INFORMATIONAL - Domestic HAZMAT Handling and Noncompliance Fees
Announcements
06/23/2026
DELIVERY - WestPac Area - California 1 District - Santa Rosa Annex Post Office (95407) - Relocation
Presentations
06/23/2026
Pop-Up Mini-Cafe: Site Synergy: WestPac PCCs Lead the Way Mini Café
Presentations
06/23/2026
MGI Credit Claim Request – Transferring credits to MSP
Presentations
06/23/2026
MGI Credit Claim Request Video
FAQs
06/23/2026
Mail Growth Incentives FAQs
Announcements
06/22/2026
INFORMATIONAL - Updates To: USPS Modernization Through Package Equipment Upgrades In June 2026
Release Notes
06/18/2026
PTR2 Release Notes_DD_06_22_26
Announcements
06/18/2026
INFORMATIONAL - Commercial System Releases July 1, 2026
Program Requirements
06/18/2026
2027 PCC Premier Certificate Program Guide
Program Requirements
06/18/2026
2027 Bronze Level Requirements
Program Requirements
06/18/2026
2027 Silver Level Requirements
Program Requirements
06/18/2026
2027 Gold Level Requirements
Program Requirements
06/18/2026
2027 PCC Leadership Award Program Guide
Applications/ Forms
06/18/2026
2027 PCC Leadership Award Nomination Form
Announcements
06/17/2026
INFORMATIONAL: USPS APIs System Release Notification - June 24, 2026
Announcements
06/17/2026
INFORMATIONAL: USPS APIs Systeme Release Notification - June 24, 2026
Announcements
06/17/2026
DELIVERY - Resumption of Mail Service to Niue - Effective June 22, 2026
Announcements
06/17/2026
INFORMATIONAL - Postal Service Prepares for Championship Celebration Parades
Announcements
06/17/2026
INFORMATIONAL - Retirement of USPS Tracking v3.0 and Tracking Webhook Subscriptions v3.0 APIs
Tech Guides
06/16/2026
PostalOne! Release 64.0.0.0 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 64.0.0.0

Tech Guides
06/16/2026
PostalOne! Release 64.0.0.0 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 64.0.0.0