D600 Standard Mail Summary D600 describes standards regarding deposit and service objectives for Standard Mail. The USPS does not guarantee the delivery of Standard Mail within a specified time. Standard Mail might receive deferred service.
Local postmasters can provide more information.
Mail Deposit 2.1 General Standard Mail must be presented at the post office where the permit or license is held and the presort mailing fee is paid. Mailings must be presented at the locations and times specified by the postmaster. Plant-loaded mailings must be presented, verified, accepted, and entered as specified by the plant load agreement and applicable standards. Metered Standard Mail may be deposited at other than the licensing post office only as permitted under D072 .