Data Files
01/08/2026
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
01/07/2026
DELIVERY - International Resumption of Mail Service - Effective January 9, 2026
Announcements
01/07/2026
INFORMATIONAL - USPS Ship - Updated Guidance on Assessment Dispute Period
Announcements
01/07/2026
INFORMATIONAL - Final Web Tools Migration Notification Must Migrate NOW
Announcements
01/07/2026
INFORMATIONAL - USPS APIs System Maintenance Notice January 24, 2026
Announcements
01/07/2026
DELIVERY - Atlantic Area – Pennsylvania 1 District - West Hickory Post Office (16370) - Suspended Temporarily
Data Files
01/06/2026
ACS Tables: PARS 2025

This spreadsheet contains 12 tables outlining ACS volume and cost for UAA Mail from FY2025.

Data Files
01/06/2026
Base Tables: PARS 2025

This spreadsheet contains 44 base tables focusing on postal operations, cost, and volume of handling UAA mail from FY2025.

Data Files
01/06/2026
Class Tables: PARS 2025

This spreadsheet contains 64 class tables that provide cost and volume by class of mail, presort category, and shape from FY2025.

Data Files
01/06/2026
Volume Tables: PARS 2025

This spreadsheet contains 3 volume tables that provide summary data by class of mail, shape, presort category, and disposition of UAA Mail.