Contact Lists
07/11/2024
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.

Presentations
07/11/2024
Industry Session: Business Customer Gateway and Postal Wizard

This industry presentation provides an overview of the Business Customer Gateway (BCG) and Postal Wizard for new users. 

A recording of this presentation is available here: Industry Session: Business Customer Gateway and Postal Wizard Recording

User Guides
07/11/2024
Guide to Mailer Scorecard

Formerly Streamlined Mail Acceptance for Letters and Flats Reporting Guide

The Postal Service provides mailers with access to a mail quality tool, the Mailer Scorecard, which displays a dashboard view of the results of the letter and flat mailing activity within each of these initiatives over a calendar month. This view is available to both the mailer who submitted the electronic documentation for the mailing (eDoc submitter) and the mail owner.

Data Files
07/11/2024
Z4 Info File

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

Data Files
07/11/2024
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.

 

Contact Lists
07/10/2024
Mail Service Provider (MSP) - Full-Service Certified Mailers

A Mail Service Provider (MSP) offers a variety of solutions to prepare and present Full-Service presort mailings. For more information regarding Certified MSPs, please follow this link: https://postalpro.usps.com/full-service-cert/fact-sheet

 

Quick Service Guides
07/10/2024