CASS Certification is a process where your members address information is compared to the U.S. Postal Service standard address listings. Any inconsistencies in address format and ZIP codes are then corrected on your credit union database.  There is no charge for this process if your credit union is an online client.  CASS Certification ensures you are using the USPS certified address for all your mailing such as daily member notices and monthly member statements. 
Currently CU*Answers handles this via a batch process where we send member name/address information from open memberships, closed memberships and alternate addresses to an outside vendor for CASS Certification, currently on a quarterly basis.  The vendor returns the correct address information and we update your CU*BASE files accordingly.  For more details, use the link below to review the CASS Certification Procedures booklet.