Address Correction refers to the automated process of correcting list records so that they meet US Postal Service standards for direct mail. Correction is often part of an overall list enhancement / hygiene process that includes the addition of information such as carrier route codes, 9-digit ZIP codes, and delivery point barcode information. The USPS offers a discount for mailings that have been corrected and enhanced because this reduces the amount of undeliverable mail. See also Address Verification.
