DMM TOC > 100 Retail Letters, Cards, Flats, and Parcels > 150 Standard Post|
USPS Retail Ground mail must be deposited at a time and place specified by the postmaster or designee at the office of mailing. USPS Retail Ground is primarily intended to be presented at a USPS retail service counter where USPS tracking and confirmation of delivery service can be initiated.
USPS Retail Ground weighing more than 13 ounces bearing only postage stamps as payment may not be deposited into a collection box, Postal Service lobby drop, Postal Service dock, customer mailbox, or other unattended location. These mailpieces are also precluded from pickup service. The sender must present such items to an employee at a retail service counter in a Postal Service facility. Improperly presented items will be returned to the sender for proper entry and acceptance.