Move Update Options

Mailers are required to update all addresses on discounted First-Class Mail and USPS Marketing Mail within 95 days before a mailing. The Postal Service makes the following Move Update options available to mailers at reasonable costs. You need to determine which of the following methods works best for your organization:

  1. NCOALink Systems. The NCOALink process provides change-of-address (COA) data, submitted by customers who have moved and have notified the Postal Service of a change-of-address. Updated 18 month or 48 month computerized change-of-address information is provided on a regular basis to the NCOALink licensees by the Postal Service. NCOALink is very effective because it corrects your addresses before you mail.
  2. Address Change Service (ACS). ACS is a free service that provides mailers a cost-effective means of obtaining current change-of-address information when mail is undeliverable-as-addressed (UAA). ACS allows you to update address files electronically, eliminating the cost, time, and errors of manual keying. ACS provides a data file that includes new address information or the reason your mail cannot be delivered (examples: “Attempted – Not Known” or “Insufficient Address”). The Postal Service may charge an electronic or automated address correction fee for each address correction record provided. With ACS, you get corrected information for your mailpiece after the mailing. For more information about ACS, go to:
  3. Ancillary Service Endorsements. Ancillary service endorsements are used to request an addressee’s new address and to provide the Postal Service with instructions on how to handle your mail if it is undeliverable-as-addressed (UAA). “Address Service Requested”, “Change Service Requested” and “Return Service Requested” endorsements meet the Move Update standard and provide you with the new address or the reason the mail cannot be delivered through either a separate address correction notice (PS Form 3547, Notice to Mailer of Correction in Address) or the return of your mail. Manual address correction fees or return postage may apply. For more information on ancillary endorsements, see DMM 507.1.5.
  4. ACS and ASE (ancillary service endorsements) are post-mailing updates and do not necessarily meet the Move Update requirement for the mailing. As long as you continue to mail to your customers at least once every 95 days using a post-mailing method, and update your addresses to be used on the mailpieces before the next mailing, you are in compliance with Move Update. Otherwise, if you mail more than 95 days after the last mailing or if this is the very first time you mail to an address that you obtain other than directly from your addressee (in the last 95 days), you must use an approved method or mail the pieces at the single-piece First-Class Mail price.

    Additional information on how to comply with the Move Update standard can be found in the Guide to Move Update at and DMM 602.5 at