Mailing Standards of the United States Postal Service Domestic Mail Manual > 100 Retail Mail Letters, Cards, Flats, and Parcels > 170 Retail MailMedia Mail and Library Mail > 176 Deposit and Entry
1.0 Deposit for Media Mail and Library Mail
2.0 Pickup on Demand Service
Single-piece Media Mail and Library Mail and mail with a permit imprint must be deposited at a time and place specified by the postmaster at the office of mailing. Metered mail may be deposited at other than the licensing Post Office under 705.19.0.
Media Mail and Library Mail pieces bearing only postage stamps as postage payment and that weigh more than 10 ounces, or measure more than one half-inch in thickness, may not receive pickup service, nor be deposited into a collection box, Postal Service lobby drop, Postal Service dock, customer mailbox, or other unattended location. 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.
Pickup on Demand service (507.7.0) is available for a fee only from designated ZIP Codes and can be requested online at www.usps.com.