422 Unpaid Mail

422.1 Unpaid Mail With a Return Address

Regardless of mail class, return to the sender each unpaid mailpiece that has a return address. Endorse the mailpiece with rubber stamp R-1300-230, Return For…Additional Postage.

422.2 Unpaid Mail Without a Return Address

Regardless of mail class, forward each unpaid mailpiece that does not have a return address to the Mail Recovery Center for proper disposition.