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Mailing & Shipping Regulations

Domestic Mail Manual (DMM) updated November 7, 2022

International Mail Manual (IMM) updated October 10, 2022


Address Quality Fact Sheet

Basic Design Elements For Letters & Cards

PUB 6850: Streamlined Mail Acceptance For Letters & Flats

New Mailing Standards for Lithium Batteries

Streamlined Mail Acceptance For Letters & Flats