Mailing Standards of the United States Postal Service Domestic Mail Manual

January 21, 2024

  Transmittal Letter

Summary of Changes

100 Retail Mail Letters, Cards, Flats, and Parcels
200 Commercial Letters, Flats, and Parcels Design Standards

500 Additional Mailing Services
600 Basic Standards For All Mailing Services
700 Special Standards


Forms Glossary

Notice 123