Data Files
08/20/2026
Z4 Info File

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

Data Files
08/20/2026
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
08/19/2026
INFORMATIONAL - Lives Holiday Shipping Recommendations September 7, 2026
User Guides
08/19/2026
Provisioning EMAS API Invoices Data in Informed Visibility® Mail Tracking & Reporting (IV®-MTR)

This guide provides instructions for receiving EMAS API Invoices data through the IV Mail Tracking & Reporting application.

Announcements
08/19/2026
INFORMATIONAL - Update – AIM Meeting Changed from Atlantic Area to All Areas
Announcements
08/19/2026
DELIVERY - International Service Suspension Notice - Effective August 21, 2026
Announcements
08/18/2026
DELIVERY: WestPac Area – NV-UT District - Sierra Post Office (89506) and Reno Post Office (89510) - Resume Operations
Announcements
08/18/2026
INFORMATIONAL: RESOLVED - Duplicate Refunds Reversal
Announcements
08/18/2026
INFORMATIONAL - Atlantic Area –Virtual AIM Meeting September 17th, 2026
Error Codes
08/18/2026
Known Issues List 8.11.2026