Announcements
05/20/2026
DELIVERY - Diplomatic Post Office (DPO) May 20, 2026
Announcements
05/20/2026
INFORMATIONAL - USPS APIs System Release May 21, 2026
Technical Specifications
05/20/2026
Mail.xml Technical Specifications R64.0.0.0
Technical Specifications
05/20/2026
Mail.dat Technical Specifications R64.0.0.0
Release Notes
05/20/2026
July 2026 Release Overview

Note: For the latest technical specifications, please see the July 2026 Price Change Release Notes as they are published. Mail.dat and Mail.XML updates required for this release. 

Presentations
05/19/2026
PCC National Monthly Touchpoint (May)

 

 

PCC National Monthly Touchpoint Recording (May)

Passcode: S+?yXQe3

Announcements
05/19/2026
INFORMATIONAL - Mailer Scorecard - Temporarily Unavailable
Announcements
05/19/2026
INFORMATIONAL - Updated - 2026 Labeling List and Mail Direction File (MDF) Timeline
Release Notes
05/19/2026
PTR2 Release Notes_DD_05_19_26
Release Notes
05/18/2026
May 31 2026 EPS/eBill R8.4.0.0 Release Notes
Fact Sheets
05/18/2026
IMpb (Intelligent Mail® Package Barcode & IMmb (Intelligent Mail® Matrix Barcode) Verification Fact Sheet
Announcements
05/18/2026
DELIVERY - International Service Resumption Notice – Effective May 19, 2026
Announcements
05/18/2026
INFORMATIONAL - USPS APIs System Release - Rescheduled May 28, 2026
Announcements
05/18/2026
INFORMATIONAL - USPS APIs System Release May 26, 2026
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.

Announcements
05/14/2026
INFORMATIONAL - Package Tracking API Provisioning Reminder
Announcements
05/14/2026
INFORMATIONAL - Reminder - USPS Enhanced Addresses API – Coming July 2026