Manifest Mailing System
Applications/ Forms
03/04/2026
Manifest Mailing System Exception Request Form

Effective April 1, 2026 - The Postal Service is retiring Publication 401 Manifest Mailing System (MMS) used for mail sortation and preparation with hard copy forms and documentation.

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.

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