Address Change Service (ACS) is an electronic enhancement to traditional, manual methods of providing change-of-address (COA) information to mailers. The system is designed to reduce the volume of manual (hard copy) address correction notifications handled by both the Postal Service and mailers while at the same time centralize and automate the provision of address correction information to mailers. Mailers add a unique code to the address area of their
mailpieces to identify them as ACS participants. As undeliverable-as-addressed (UAA) mailpieces are subsequently
processed at Computerized Forwarding System (CFS) sites, this code prompts the CFS computer system to
create an electronic record of the customerís move information. These records are consolidated nightly at the
National Customer Support Center (NCSC) in Memphis and are provided to ACS mailers according to a frequency
determined by each mailer.
ACS provides significant cost-saving benefits to mailers and the Postal Service. ACS participants are able to use
electronically generated address correction information to update their mailing lists more easily and in a more
timely manner. The mailerís cost to receive electronic ACS notifications is $0.20 per record; manual hard copy
notifications are $0.50 per notification. This front-end savings, coupled with the fact that electronic records cost
substantially less for mailers to process than labor-intensive manual mailing list update methods, leads to a two-edged
financial benefit for participating mailers.
The Postal Service reaps a dual benefit from mailersí use of ACS as well. Electronic address information costs
considerably less to process and provide to mailers than manual notifications. In addition, mailers who utilize
ACS are able to update their mailing lists in a more timely manner. This leads to an overall reduction in
costly UAA mail volume as fewer mailpieces must be handled multiple times by Postal Service personnel.
Currently, ACS has over 3,000 participants representing over 4,200 active participant codes across all mail
classes. More than 119 million notifications were provided in 1997, which represents a 6.5% increase over 1996.
USPS Publication 8, Address Change Service (Adobe PDF file).
For more information, please call the National Customer Support Center at 1-800-331-5746.