CASSTM certification

USPS® address verification

The USPS® uses the Coding Accuracy Support SystemTM (CASS) to evaluate the accuracy of validation and matching software. It works by checking five-digit ZIP®, ZIP + 4® and delivery point codes.

Experian Data Quality's address verification is CASS-certified providing a multitude of benefits.


Benefits of CASS Certification:

  • Qualify for postage discounts on bulk mailings.
  • Ensure deliverability and reduce the amount of undeliverable and returned mail.
  • Increase address accuracy and data quality within your CRM or database.