Fact Sheets
03/03/2026
Ancillary Service Endorsement Fact Sheet

Ancillary service endorsements are used by mailers to request an addressee’s new address or the reason mail cannot be
delivered as addressed and to provide the US Postal Service with instructions on how to handle Undeliverable As Addressed
(UAA) mailpieces.

Fact Sheets
02/12/2026
Manifest Mailing Systems Retirement Fact Sheet

The USPS is amending Mailing Standards of the United States Postal Service, Domestic Mail Manual (DMM) subsection 703.2.0 to retire the manifest mailing system (MMS). Effective April 1, 2026.

Fact Sheets
12/18/2025
Addressing Fact Sheet for First-Class Flats

This document is for mailers who are sending flat-size mail (such as large envelopes) at Automation and Presorted First-Class Mail prices. To use these prices, you must mail at least 500 pieces at a time, prepared and sorted according to Postal Service guidelines. 

Fact Sheets
12/16/2025
Addressing Fact Sheet for USPS Marketing Mail Flats

This document is for business mailers who are sending flat-size USPS Marketing Mail (such as large envelopes, catalogs, and circulars). To use the USPS Marketing Mail prices, you must send at least 200 pieces or 50 pounds of mail at a time, prepared and sorted according to Postal Service guidelines.

Fact Sheets
11/12/2025
USPS Ship Package Data Feeds

This document outlines the steps for shippers to access package data feeds through the USPS Informed Visibility Mail Tracking & Reporting (IV-MTR) application.

Fact Sheets
09/24/2025
Mailpiece Design Analyst (MDA) Customer Service Help Desk Brochure

An overview brochure for the MDA Customer Service Help Desk, including services, benefits, and contact information.

Fact Sheets
08/26/2025
Fact Sheets
08/20/2025
Fact Sheets
07/17/2025
Licensing Fees

This document contains information about licensing fees for USPS® Licensed Products.

Fact Sheets
07/13/2025
Address Information System (AIS) Products Pricing

Pricing guide for Address Information System (AIS) products, including Carrier Route, ZIP + 4®, Five-Digit ZIP®, City State, Delivery Statistics, Z4Change, ZIPMove, eLOT®, and RDI™.

Fact Sheets
07/07/2025
About Mailers' Technical Advisory Committee (MTAC) User Group 2

This document provides a brief description of MTAC User Group 2 for PTR and eVS/USPS Ship and provides a contact for joining the group.

Fact Sheets
07/07/2025
Fact Sheets
07/07/2025
Intelligent Mail Tray Label Technical Fact Sheet

This document provides fact sheet providing technical specifications on the acquisition, implementation, and benefits of the Intelligent Mail Tray Label.

Fact Sheets
06/26/2025
About Mailers' Technical Advisory Committee (MTAC) User Group 4

This document provides a brief description of MTAC User Group 4 for mail visibility and provides a contact for requesting to join the group.

Fact Sheets
06/16/2025
Fact Sheets
05/23/2025
SD Data Security Considerations and Comparisons Guidance

This document provides additional information on Secure Destruction and general information security.

Fact Sheets
05/06/2025
eVS and USPS Ship Online Report and IV®-MTR Data Feed Comparison

eVS and USPS Ship Online Report and Informed Visibility® Mail Tracking & Reporting IV®-MTR Data Feed Comparison

Fact Sheets
04/14/2025
Mail Anywhere Fact Sheet

Mailers have the opportunity to use the same permit at any location via the Mail Anywhere program.