CASS stands for Coding Accuracy Support System (CASS), a process that enables the United States Postal Service (USPS) to evaluate the accuracy of software that corrects and matches street addresses. With this level of quality control, the USPS can improve its operations by reducing undeliverable mail, unsortable mail, and parcels that require additional resources from postal workers to reach their intended destinations.

Not just anyone can be CASS certified. To achieve the recognition, address software vendors need to undergo a test, with results graded by the USPS. Upon completing the test, if there are any problems, software developers receive useful diagnostics to correct and improve their tool. 

Why does CASS matter?

CASS is key because USPS maintains one of the most comprehensive and expedient mail delivery networks in the world. The backbone of the USPS is its integrated supply chain, which delivers mail to 160M+ addresses in the United States.  According to the USPS official website, “the delivery address is the most important information on your mail piece.” 

For businesses that reach customers in North America, failed deliveries are a multi-billion dollar problem that also creates logistical challenges for the USPS. Senders and recipients of mail can reduce strain on the Postal Service by ensuring that information is well-formatted and correct. 

The best way to do just that is to rely on trusty address verification software, which uses an application programming interface (API) to validate information. Data that someone enters into an online form can be checked against a dataset to validate that it is a real address. This technology is particularly useful for online retailers that engage in real-time commerce. 

Learn more: What is CASS? 

Loqate is proud to offer the most cutting-edge, reliable and easy-to-use address validation software on the market, and is fully CASS certified. Learn more by checking out our Verify solution.