DMM TOC > 100 Retail Letters, Cards, Flats, and Parcels > 120 Priority Mail124 Postage Payment Methods1.0 Basic Standards for Postage Payment1.1 Payment MethodPriority Mail postage may be paid with postage stamps (see 604.1.0), or meter stamps (see 604.4.0) affixed to each piece. 1.2 Forever Prepaid Flat Rate PackagingPriority Mail Forever Prepaid Flat Rate packaging must be purchased by credit card online at www.usps.com and bears a shipping label with affixed Forever Prepaid postage. Mailers adding extra services must take packages to a retail Post Office location for payment of the associated fees for each extra service added. USPS Tracking (electronic option) is included at no additional cost. |