Announcements
04/13/2026
INFORMATIONAL - USPS Enhanced Addresses API – Coming July 2026
Release Notes
04/13/2026
PTR2 Release Notes_DD_04_18_26
Announcements
04/13/2026
INFORMATIONAL - Informed Delivery Campaign Reporting Update April 2026
Applications/ Forms
04/13/2026
Addressing API License Agreement
Announcements
04/13/2026
INFORMATIONAL - 2026 National Postal Forum Leadership Insight Sessions
Announcements
04/13/2026
INFORMATIONAL - Package Tracking API Provisioning Cancelled
Technical Specifications
04/13/2026
Mail.dat Technical Specifications R64.0.0.0
Data Files
04/13/2026
***Updated - New Areas*** - Area District 5-digit ZIP Codes (AREADIST_ZIP5.TXT)
Data Files
04/13/2026
City/State ZIP Code Weekly Compare
Data Files
04/13/2026
3 Digit ZIP/AISU Office List (AISUREPT.TXT)