Address Management Services (AMS)
A stand-alone Special Service available for a fee that mailers use to correct name and address lists, to correct occupant lists, to sort mailing list addresses to the finest possible ZIP Code level, or to sort mailing lists on cards by 5-digit ZIP Code. The Special Service includes address management products such as software and database files (e.g., Delivery Point Validation (DPV)). USPS also provides address changes to election boards and voter registration commissions.