Announcements
05/16/2025
INFORMATIONAL: USPS Ship Minor Configuration Update to Package Errors and Warnings (PEW) Text in Error Fields
Release Notes
05/16/2025
May 28, 2025 Release Notes
Applications/ Forms
05/16/2025
ACS™ Enrollment Form

This document is the enrollment form for ACS™.

Announcements
05/15/2025
DELIVERY: Southern Area - (AR-OK District) - Glencoe Post Office (74032) - Temporarily Suspended
Announcements
05/15/2025
INFORMATIONAL: July Price Change 2025 - Commercial System Releases - June 29, 2025
Contact Lists
05/15/2025
CASS™ Certified Products Guide: Residential Delivery Indicator Cycle O - (Expires July 31, 2028)
Contact Lists
05/15/2025
RDI™ Cycle O: Certified Products Guide (D) - (Expires July 31, 2028)

This document outlines the CASS/MASS certified vendors list for RDI™ Cycle O.

Contact Lists
05/15/2025
CASS™ Certified Products Guide: M L O C R Mailers/Users Data File Cycle O - (Expires July 31, 2028)
Contact Lists
05/15/2025
CASS™ Certified Products Guide: M L O C R Mailers/Users Cycle O - (Expires July 31, 2028)
Contact Lists
05/15/2025
CASS™ Certified Products Guide: M L O C R Service Bureaus Data File Cycle O - (Expires July 31, 2028)