The DMM contains the official standards governing domestic mail services; descriptions of the mail classes and special services, and standards for rate eligibility and mail preparation.
You can view an electronic version of the Domestic Mail Manual on the Postal Explorer Home Page.
This publication contains a collection of 56 individual Quick Service Guides. Each Quick Service Guide provides a 2-page summary of the standards in the Domestic Mail Manual (DMM). The Quick Service Guides summarize the mailing standards for a particular class of mail or preparation option and links to the DMM. You can view electronic versions of the Quick Service Guides on the Postal Explorer Home Page.
A multipurpose template for determining automation-compatibility for letter-size mailpieces. This clear plastic overlay simplifies address placement, identifies the barcode clear zone, and includes positioning marks for facing identification mark (FIM) patterns and character height and spacing gauges. Notice 67 is available through your Business Mail Entry Office and some large post offices.
Use Notice 3A to determine if your mailpiece meets the dimensions for letter-size mail. A handy "slot" on the template measures maximum thickness. The template also provides the aspect ratio (length divided by height) requirements for automated processing. Notice 3A is available through your Business Mail Entry Office and some large post offices.