Customer Support Rulings

Customer Support Rulings (CSRs) help Postal Serviceā„¢ employees and customers use the information in Mailing Standards of the United States Postal Service, Domestic Mail Manual (DMM). CSRs provide examples of specific mailpieces and an analysis of how our mailing standards are applied.

First Class Mail

First Class Mail

Parcels

Parcels

Periodicals

Periodicals

Standard Mail

Standard Mail

Software Developer

Software Developer

Description