Contact Lists
02/29/2024
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.

Data Files
02/29/2024
Z4 Info File

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

Data Files
02/29/2024
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.

 

Announcements
02/27/2024
Tools
02/27/2024
Election Mail and Ballot Mail STID Finder

The Election Mail and Ballot Mail Service Type IDentifier (STID) Finder is a tool designed to assist election officials and their mail service providers in selecting an appropriate Election Mail and Ballot Mail STID for their outbound mailings.*

A STID is a unique three-digit code that indicates the service type for an individual mailpiece. Use of the appropriate STIDs allows for Informed Visibility® Mail Tracking and Reporting (IV®-MTR) to identify mailpieces, with all expected service combinations, during mail processing.

How it Works

The tool asks users to answer a series of yes/no and multiple-choice questions related to the main attributes that determine which STID may match the mailer’s needs for Intelligent Mail barcoded mail.

It is critical when utilizing the tool to understand the difference between Ballot Mail and Election Mail in order to select the optimal STID.

Ballot Mail is a mailpiece sent to or from an authorized election official containing a live ballot that may be used to cast a vote in an election. Ballot Mail is a subset of Election Mail, which is any item mailed to or from an authorized election official that enables citizens to participate in the voting process, such as live and sample ballots, voter registration cards, absentee ballot applications, and polling place notifications.

This tool supports ONLY Election Mail and Ballot Mail. All other types of mailings should refer to the full list of STIDs available on Postal Pro at https://postalpro.usps.com/mailing/service-type-identifiers.

*Please note that the tool’s results are suggestions only. For further insight into what each STID offers, contact the ACS Help Desk via email at ACS@usps.gov or by phone at 877-640-0724, Option 1.

Data Files
02/27/2024
Labeling List Changes Effective April 1, 2024

This file has been temporarily removed and will be replaced as soon as possible. We are sorry for the inconvenience.