Data Files
05/18/2026
AISU Contact Information (AISUADDR.TXT)
Data Files
05/18/2026
Area District Finance File Specification (AREA_DIST_LAYOUT.TXT)
Data Files
05/18/2026
Area District Finance File (AREADIST.TXT)
Data Files
05/18/2026
Area/District 3-digit and 5-digit ZIP Code Assignments (AREA_DIST_ZIP.TXT)
Data Files
05/18/2026
Move to Competitive Street Addressing (MTC SA) List

This .txt file contains the MTC SA List.

Release Notes
05/17/2026
May 17 2026 PostalOne! R63.2.2.0; Crosswalk R10.0.1.0 & USPS Ship R27.0.0.0 Release Notes
Announcements
05/15/2026
INFORMATIONAL: Business Customer Gateway (BCG) – [INCIDENT # 10666547] Customer Validation Tool Query Errors – Resolved
Announcements
05/15/2026
INFORMATIONAL: Business Customer Gateway (BCG) – [INCIDENT # 10666547] Customer Validation Tool Query Errors
Announcements
05/15/2026
INFORMATIONAL: Enterprise Payment System (EPS) System – [INCIDENT # 10664537] EPS Delayed ACH Debit and Credit Card Transaction Processing Issue Resolved
Announcements
05/15/2026
PROCESSING & DISTRIBUTION: Memphis, TN Regional Processing & Distribution Center (RPDC) Expands Operations - May 16, 2026
Announcements
05/15/2026
INFORMATIONAL: Commercial System Releases (May 23 - May 29)
Announcements
05/15/2026
INFORMATIONAL: USPS APIs System Release - May 20, 2026
Release Notes
05/15/2026
May 27 2026 USPS Ship R27.0.1.0 Release Notes
Announcements
05/15/2026
Post Office/ZIP Code Entries for Postal Bulletin 5/28/2026

This spreadsheet provides details on the Post Office/ZIP Code entry changes for Postal Bulletin issue 5/28/2026.

Contact Lists
05/15/2026
Business Acceptance Solutions & Major Mailer Support Directory

This document provides a contact list for Business Acceptance Solutions (formerly Business Mailer Support) & Major Mailer Support

 

Announcements
05/14/2026
INFORMATIONAL - Package Tracking API Provisioning Reminder
Announcements
05/14/2026
INFORMATIONAL - Reminder - USPS Enhanced Addresses API – Coming July 2026
Release Notes
05/13/2026
PTR2 Release Notes_DD_05_14_26
Announcements
05/13/2026
DELIVERY - International Service Resumption Notice - Effective May 15, 2026
Applications/ Forms
05/12/2026
Emerging Roads Order Form

The USPS Emerging Roads™ order form is coming soon.

Announcements
05/12/2026
INFORMATIONAL - Registration Deadline - Mail Growth Incentives 2026
Presentations
05/12/2026
July 2026 Market Dominant Price Change Filing Webinar Q&As
Release Notes
05/12/2026
USPS APIs Release Notes

For the latest updates, please review the USPS APIs Release Notes.

Announcements
05/11/2026
INFORMATIONAL: Changes to USPS Dimensional (DIM) Weight Calculation
Announcements
05/11/2026
INFORMATIONAL: U.S. Postal Service Recommends Competitive Price Changes for July 2026