Domestic Mail Manual (DMM): Mailing Standards of the United States Postal Service effective November 3, 2025

Here is the Domestic Mail Manual (DMM) — the Mailing Standards of the United States Postal Service, effective November 3, 2025. For prior versions, click here.

U.S. Postage Rates Effective January 18, 2026

For expired rate charts click here

DMM Index and Appendices

RETAIL MAILING SERVICES
100 Retail Letters, Cards, Flats, and Parcels

COMMERCIAL MAILING SERVICES
200 Commercial Letters, Cards, Flats, and Parcels

GENERAL INFORMATION
500 Additional Mailing Services
600 Basic Standards for All Mailing Services
700 Special Standards