A certification program developed by the United States Postal Service (USPS) to ensure the accuracy and standardization of addresses in mailing databases. Its primary goal is to improve deliverability, reduce undeliverable mail, and enable businesses to qualify for postal discounts by verifying that address data complies with USPS formatting and coding standards. CASS certification applies to software solutions used by mailers, service bureaus, and data providers to process address lists accurately and efficiently. These software systems compare input addresses against the USPS Address Management System, correcting elements such as ZIP Codes, street names, city names, and directional information. A key outcome of this process is the generation of a standardized, delivery-point validated address that aligns with USPS expectations.
How CASS Works
CASS-certified software can perform a variety of corrections and enhancements, including:
- Verifying street names and numbers: Ensures that street addresses are accurate and correctly formatted.
- Standardizing address abbreviations: Converts full address terms into standardized abbreviations.
- Appending missing ZIP+4 codes: Adds missing ZIP+4 codes to improve address precision.
- Identifying delivery points and carrier routes: Helps in routing mail efficiently.
- Flagging potentially undeliverable or non-existent addresses: Identifies addresses that may not be deliverable.
Certification Process
To maintain certification, software vendors must pass USPS testing regularly, ensuring their systems are up-to-date with address data and postal regulations. CASS certification must be renewed annually with the USPS to meet current CASS Certification cycle requirements. CASS Certified products are listed in USPS literature and on its website.
Benefits of CASS Certification
For mailers, using CASS-certified solutions is essential not just for operational efficiency but also for accessing bulk mailing discounts through automation-compatible mailing processes. CASS plays a foundational role in modern direct mail and database hygiene, ensuring that address data is accurate, complete, and formatted for optimal processing by the USPS.
