DMM TOC > 100 Retail Letters, Cards, Flats, and Parcels > 150 USPS Retail Ground154 Postage Payment Methods1.0 Postage Payment Methods for USPS Retail GroundThe mailer is responsible for proper postage payment. Subject to the corresponding standards, postage for USPS Retail Ground mail may be paid by postage evidencing system indicia (see 604) or by ordinary postage stamps. Pieces with postage affixed must bear the correct numerical value of postage. |