If you’ve been in the mailing world for more than five minutes, you’ve heard two acronyms tossed around: ACS™ (Address Correction Service) and...
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USPS Tools & Standards
ACS™ Best Practices: How to Reduce UAA Mail
Dec 3, 2025 | Articles, USPS Tools & Standards
Undeliverable-as-addressed (UAA) mail is the classic double loss. You pay to print and send it; USPS pays to handle and process it. Best case,...
Read MoreWhat Is Address Correction Service (ACS™)? A Beginner’s Guide
Oct 16, 2025 | Address Data Quality, Articles, Understanding Address Quality, USPS Tools & Standards
If you’ve ever wondered, “What happens after I send a mailing and some pieces never reach their destination?” — this is for you. Let’s break...
Read MoreNavigating the “Flavors” and Data of USPS Address Change Service (ACS™)
Sep 2, 2025 | Address Data Quality, Articles, Understanding Address Quality, USPS Tools & Standards
The Address Change Service (ACS™) offers several “flavors” or variations, each with distinct features, costs, and data delivery...
Read MoreUnderstanding ACS™ – The USPS’s Powerful Tool for Address Quality and Cost Savings
Sep 2, 2025 | Address Data Quality, Articles, Understanding Address Quality, USPS Tools & Standards
Undeliverable As Addressed (UAA) mail poses a significant financial burden, costing the USPS an estimated $1.39 billion annually and businesses...
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