The Coding Accuracy Support System (CASS™) Certification is an optional certification system provided by the United States Postal Service aimed at improving accuracy and standardization for any software accessing the USPS address database. You can learn more about Lob and the CASS certification here but in short, being CASS-certified means Lob's Address Verification solution has earned an A+ from the USPS.
As we continue to grow exponentially, we are committed to the promise that our product meets this high standard—we are proud to announce Lob has achieved CASS Cycle O certification.
All functions available in CASS Cycle N apply to Cycle O, but major changes include new address fields, updated reference data, and more intelligent matching logic. These enhancements are designed to improve address accuracy, decrease undeliverable mail, and streamline the validation and delivery process overall. USPS documentation says it best: these changes are a “Win, Win, Win—a Win for mailers, a Win for the USPS, and a Win for the recipients.”
The USPS’s CASS™ Cycle O - Executive Summary is a valuable reference, and we’ve captured the most notable changes below. All updates are reflected in our Address Verification API documentation and developers can also see the detailed changes here).
CASS certification guarantees a standard of quality in address verification services. But Lob’s AV product is just one touchpoint in our end-to-end automation platform—from mailing lists, creation, printing, postage, delivery, and sustainability—and you can expect best-in-class execution throughout the direct mail lifecycle.
Special thanks to Amaan Rahim, Vishal Mangwani, Michel Puentes, Guy Argo, and Achyuta Iyengar on their dedicated efforts towards this achievement.
