Having an updated, correct, and complete address list will help ensure accurate and timely delivery of your mail. By maximizing your address quality, you can also minimize your mailing costs. The Postal Service has established minimum standards for address quality for certain postage prices.
Accurate and standardized addresses will help reduce the amount of UAA pieces in your mailings. To learn more about the correct way to standardize your addresses, contact the ACS Help Desk via email at ACS@usps.gov or by phone at 877-640-0724, Option 1 and see Publication 28, Postal Addressing Standards, online at https://pe.usps.com/text/pub28/welcome.htm.