Data Files
06/26/2025
Z4 Info File

A downloadable ZIP file containing information related to the Z4 Info File

Data Files
06/26/2025
Early Warning System (EWS002C0.ZIP)

This file is the EWS production file and is updated weekly. This file contains the Early Warning System data file for the CASS™ and MASS™ certification process.

 

Announcements
06/25/2025
INFORMATIONAL - Key Personnel Announcements in the Chief Technology and Engineering Group
Announcements
06/25/2025
INFORMATIONAL - Executive Retirement - Scott R. Bombaugh Chief Technology Officer & Executive Vice President
Announcements
06/25/2025
INFORMATIONAL - Priority Mail Open and Distribute (PMOD) Service Updates
Announcements
06/25/2025
DELIVERY - Southern Area – Alabama-Mississippi District - Rolling Fork Post Office (39159) – Resumed Operations
Data Files
06/25/2025
Informed Visibility® Mail Tracking & Reporting (IV®-MTR) Operation Codes List

This spreadsheet provides a list of operation codes (opcodes), also known as Scan Event Codes, for the IV-MTR application.

Announcements
06/24/2025
DELIVERY - Central Area – Ohio 1 District Graytown Post Office (43432)
Announcements
06/24/2025
DELIVERY - Southern Area – Arkansas Oklahoma District Center City Station (73102) – Temporarily Suspended
Announcements
06/24/2025
INFORMATIONAL - USPS APIs System Maintenance June 25, 2025