Improve Address Accuracy

"Prior to QAS, we had a return rate of over 16 percent. Our current return rate is almost negligible."

- Pacific Northwest Ballet

Prices as Low as $50

Customer List Management Services

If you want to grow your business, don’t forget about the customers you already have. Experian has partnered with Intellgent Search Technologies (IST) to provide address verification services that will check your existing addresses against the USPS® database, allowing you to mail confidently with the knowledge that every communication will reach a valid address.

Address Cleansing

When was the last time you cleaned your mailing list? If it’s been more than a year, then it’s probably time for a clean up. Scrub your list today to improve the results of your next mailing. 

CASSTM Certification

Qualify your address list for postage discounts with our online CASS™ certification service. Checking your list with CASS Certified™ software is the first step to getting mailing discounts.

Address Validation

Find out which addresses in your list are valid, which can be corrected and which are completely undeliverable by matching against USPS data.

Address Correction

Have returned mail and bad addresses got you down? Use our online address correction service to scrub your list and improve your data.

Cleaning your file with a CASS Certified service is one of the requirements to obtain postal discounts. Please check with the USPS to see what other requirements are needed for your mailing to qualify for postal discounts.

Experian is a nonexclusive full-service provider licensee of the United States Postal Service®. The following trademarks are owned by the United States Postal Service®: CASS Certified, United States Postal Service, ZIP+4, USPS and CASS. The price for Experian's services is not established, controlled or approved by the United States Postal Service.