Publications
08/26/2025
Publication 401: Guide to the Manifest Mailing System

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. Please see here for more information.

Publications
06/30/2025
Publications
06/27/2025
Labeling List Changes Effective August 1, 2025

Effective August 1, 2025, the Postal Service™ will revise Labeling List(s) L002, L004, L005, L007, L010, L012, L601, L605, and L606 to reflect changes in mail processing operations.

Publications
06/02/2025