Release Notes
05/08/2026
May 17 2026 PostalOne! R63.2.2.0 Release Notes
Release Notes
05/08/2026
May 17 2026 USPS Ship R27.0.0.0 Release Notes
Announcements
05/06/2026
INFORMATIONAL - USPS APIs System Release – May 10, 2026
Announcements
05/06/2026
INFORMATIONAL - USPS API System Maintenance Release Notice – May 9, 2026
Announcements
05/06/2026
INFORMATIONAL - Central Area AIM’s meeting June 30, 2026
Announcements
05/06/2026
DELIVERY - International Service Resumption Notice effective May 8, 2026
Technical Specifications
05/06/2026
PTR Tracking API Specifications and Integration
Data Files
05/04/2026
***Updated - New Areas*** - Area District 5-digit ZIP Codes (AREADIST_ZIP5.TXT)
Data Files
05/04/2026
City/State ZIP Code Weekly Compare
Data Files
05/04/2026
3 Digit ZIP/AISU Office List (AISUREPT.TXT)