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.
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-verified drop shipment (PVDS) mailings must be presented for verification, acceptance, and entry under P950. 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. Nonprofit Standard Mail must be presented only at post offices where the organization producing the mailing has an approved nonprofit authorization (E670).
Pieces at different rates (e.g., 3/5 and basic) may be combined in the same mailing as provided in M011. Separate mailings may be reported on the same postage statement if the pieces in the mailings are in the same processing category (C050), are part of the same mailing job, and are presented for verification at the same time.
DMM Issue 58 (8-10-03)