Address Correction Service
A system of Ancillary Service endorsements that enables a mailer to obtain an addressee’s new (forwarding) address if it is actively on file with USPS or the reason for nondelivery for an undeliverable-as-addressed mailpiece. This service is available alone using the Change Service Requested endorsement or as part of other Ancillary Service endorsements such as Address Service Requested in which the mail is forwarded and a separate notice of the new address is provided to the sender.