How does ACS work?
In contrast to NCOA, address changes received via ACS by a mailer occur after the mailing. Mailers participate in the program at no enrollment charge by contacting the United States Postal Service National Customer Support Center in Memphis TN, 1-800-331-5746. Mailers are assigned a participant code, and agree to format their mail piece in a manner in which it can easily be recognized as an ACS mailing by the clerks at the CFS sites and the Postal Carriers. An additional line, above the name and address information, in the address block identifies the mailer and contains the participant code assigned by the NCSC. An optional (and highly recommended) second line contains a key line that the mailer should use to identify the particular customer. When a mail piece is undeliverable as addressed, it is forwarded to one of the 200+ CFS sites for processing. There are many options under the ACS program depending on the class of mail and the endorsement used. For additional details ask for a c
