Data Files
08/27/2026
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
08/26/2026
DELIVERY: WestPac Area – NV-UT District - Sierra Post Office (89506) – Resume Operations
Release Notes
08/26/2026
August 27, 2026 COP Release Notes
Announcements
08/25/2026
DELIVERY: WestPac Area – CO-WY District - Hasty Post Office (81044) – Resume Operations
Announcements
08/25/2026
INFORMATIONAL: USPS Scan Event Extract Modernization Updates
Presentations
08/25/2026
PCCAC: News You Need to Know from MTAC - July 2026
Announcements
08/25/2026
PROCESSING AND DISTRIBUTION - Update - Southeast Region – Tennessee – Severe Weather Impacts
Announcements
08/25/2026
INFORMATIONAL - Commercial System Releases – August 27, 2026 – September 4, 2026
User Guides
08/25/2026
Intelligent Mail Small Business (IMsb) Tool User Guide
Release Notes
08/25/2026
Informed Visibility® Mail Tracking & Reporting (IV®-MTR) Release Notes

These release notes summarize new features and enhancements implemented in deployments to the IV-MTR application.