Vice President for Administration  >  Mail Services  >  Post Office General Information  >  Ancillary Service Endorsement

Ancillary Service Endorsement

Overview: Ancillary service endorsements are used by mailers to request an addressee's new address and to provide the USPS with instructions on how to handle undeliverable pieces. Specific endorsements are required, depending on the class and weight of the mail piece, and are not interchangeable between classes of mail. Only the correct phrases placed on the applicable classes of mail will be honored by the USPS.

Placement: Proper placement of the endorsement is required. If the endorsement cannot be seen or understood, you might not receive the requested service. The endorsement must be in either the upper left corner of the address side of the piece or the upper left corner of the address area of the piece, directly below the mailer's return address. The endorsement and return address must read in the same direction as the delivery address.
There must be a 1/4 inch clear space above and below the endorsement.

Print Standards: An endorsement must be printed in no smaller than 8-point type, and it must stand out clearly against its background. Brilliant colored envelopes and reverse printing are not permitted.

Example: Reference charts for First-Class Mail and Standard Mail highlight commonly used endorsements. For a complete listing, see Domestic Mail Manual (DMM) 507.1.0. For assistance, contact your postal business center (G041).