UAA

Writing & Everyday abbreviation · Mail and Postal

UAA
Stands forUndeliverable as addressed
CategoriesWriting & Everyday

UAA stands for Undeliverable as addressed, a mail and postal abbreviation.

USPS term for mail that cannot be delivered as addressed, because of a move, an incomplete address, a vacancy or a refusal. UAA mail is forwarded, returned or discarded depending on its class and endorsements.

Example: Address hygiene matters: every UAA piece wastes postage and delays important notices.

Usage notes

Mailers print endorsements such as "Return Service Requested" or "Address Service Requested" to tell USPS how to handle UAA pieces. Returned mail carries a reason, such as "Attempted - Not Known" or "Unable to Forward." Reducing UAA volume is the main goal of the NCOA and address-standardization programs.

More mail and postal abbreviations

  • APO – Army Post Office
  • Attn – Attention
  • BFPO – British Forces Post Office
  • c/o – Care of
  • CMRRR – Certified Mail, Return Receipt Requested
  • COA – Change of address
  • DPO – Diplomatic Post Office
  • EMS – Express Mail Service
  • FAO – For the attention of
  • FCM – First-Class Mail
  • FPO – Fleet Post Office
  • HC – Highway contract route

See all 35 mail and postal abbreviations →