CASS™ Certified Software

The USPS® uses the CASS system to evaluate the accuracy of address correction and matching software by checking five-digit ZIP®, ZIP + 4®, and delivery point codes. QAS Batch is our CASS certified address correction software.

We offer a free trial of QAS Batch for up to 5,000 records. See how CASS certification can help enhance your data.

The CASS system ultimately reduces the amount of unsorted mail, mail that cannot be delivered as well as mail that is deliverable but requires extra effort to determine the correct address. In turn, it reduces work load in the USPS, saving them time and money.

For this, using CASS certification software to manage mailing lists allows organizations to qualify for discounts on mailings as well as ensure deliverability. Using QAS Batch can qualify your organization for such postage discounts.

For more technical and detailed information on the CASS System visit the USPS website.