List Hygiene — ABCs of Improving Address Quality

There are a few ways to meet the requirements. The best known is NCOA Link. NCOA Link provides a service for matching address lists against changes filed by movers diligent enough to file an address change.

Changing Addresses

Another service that will meet the requirements is ACS (Address Change Service). This service provides electronic notices of address changes as the mail moves through the Postal Service. It is fairly complicated to participate in, and requires special codes to be printed in the address block.