Proposed rule · 2025-02212

Optional 5-Digit/3-Digit/ADC Sortation

The Postal Service is proposing to amend Mailing Standards of the United States Postal Service, Domestic Mail Manual (DMM[supreg]) to change the standards for First Class Mail[supreg] and USPS Marketing Mail[supreg] flats from a "required" 5-digit, 3-digit, and ADC preparation to an "optional" preparation.