Contact Lists
05/15/2025
DPV® Licensees Cycle O: Certified Products Guide - (Expires July 31, 2028)
Contact Lists
05/15/2025
CASS™ Software Manufacturers Data File Cycle O: Certified Products Guide (D) - (Expires July 31, 2028)
Contact Lists
05/15/2025
CASS™ Software Manufacturers Cycle O - (Expires July 31, 2028)
Contact Lists
05/15/2025
CASS™/MASS™ Certified Products Guide - All Sections Data Files Cycle O - (Expires July 31, 2028)

This document contains the certified vendors list for CASS™ and MASS™ products for Cycle O.

Data Files
05/15/2025
Z4 Info File

A downloadable ZIP file containing information related to the Z4 Info File

Data Files
05/15/2025
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
05/14/2025
DELIVERY - WestPac Area - AZ-NM District - Office Temporarily Closed - Greer Post Office (85927)
Announcements
05/14/2025
INFORMATIONAL: Webinar - Introducing Priority Mail Next Day
Release Notes
05/14/2025
Priority Mail Next Day/Post Host Release Overview
Announcements
05/14/2025
Café Mix: Strategic and Innovative Ways to Market Your Postal Customer Council