Data Files
05/14/2026
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.

 

Release Notes
05/13/2026
PTR2 Release Notes_DD_05_14_26
Announcements
05/13/2026
DELIVERY - International Service Resumption Notice - Effective May 15, 2026
Applications/ Forms
05/12/2026
Emerging Roads Order Form

The USPS Emerging Roads™ order form is coming soon.

Announcements
05/12/2026
INFORMATIONAL - Registration Deadline - Mail Growth Incentives 2026
Presentations
05/12/2026
July 2026 Market Dominant Price Change Filing Webinar Q&As
Release Notes
05/12/2026
USPS APIs Release Notes

For the latest updates, please review the USPS APIs Release Notes.

Announcements
05/11/2026
INFORMATIONAL: Changes to USPS Dimensional (DIM) Weight Calculation
Announcements
05/11/2026
INFORMATIONAL: U.S. Postal Service Recommends Competitive Price Changes for July 2026
Announcements
05/11/2026
INFORMATIONAL - EXECUTIVE ANNOUNCEMENT – Janine H. Egloff - Senior Director, Product Acceptance and Support