Data Files
10/08/2026
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
10/07/2026
INFORMATIONAL - Save the Date - National PCC Week 2027 Dates Confirmed
Announcements
10/07/2026
INFORMATIONAL - USPS Flats in Measurement and Periodicals Newspaper Scan Events Webinar
Announcements
10/07/2026
Delivery - Cos Cob Post Office (06807) - Resumes Retail Operations
Release Notes
10/07/2026
PTR2 Release Notes_DD_10_13_26
Release Notes
10/07/2026
EU Customs Change Release Overview
Data Files
10/06/2026
Informed Visibility® Mail Tracking & Reporting (IV®-MTR) Development Tracker

This document provides a list of active IV-MTR work to be as well as items completed in the current fiscal year.

 

*Please note, Postal Pro is the only source for a current IV-MTR Development log as updates will be made on an ongoing basis.

Announcements
10/05/2026
INFORMATIONAL - Postal Service Updates for October 2026 S&DC Activations
FAQs
10/05/2026
USPS FAQ - Modernization of NCOA Processing with APIs
Release Notes
10/05/2026
Bulk Rates API Release Overview