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Verify Addresses with the CASS RESTful API

You want your direct mail pieces to go to the people they’re meant for.

That’s easier said than done. After all, the U.S. Postal Service processes 318 million mail pieces each day. There’s a high risk of confusion if you don’t verify your addresses.

Marketers can improve their data accuracy by using a CASS™ address validation application programming interface (API). AccuZIP’s CASS certified point-of-entry API is a great place to start.

What Is CASS™ Address Validation?

AccuZIP CASS Point of Entry API

CASS stands for Coding Accuracy Support System. CASS™ certification is available to all software developers, mailers, and service bureaus who wish to evaluate the quality of their address-matching software.
The AccuZIP CASS RESTful API lets users integrate address validation into their applications and websites.

The idea is to get information in real-time to the delivery point—right down to the suite or apartment number. Just note that any CASS™ address validation tool you consider should be certified by the USPS. 

The Importance of USPS Address Verification 

When mailing anything, address verification is essential to ensuring what you mail arrives at its destination. The cost of losing items you ship in time and money can be mitigated by initially performing address standardization and verification on an address, correcting or identifying any mistakes.

You can use our API to:

  •  Confirm each address is valid and deliverable by the U.S. Postal Service
  • Determine if an address is vacant
  • Identify if an address is a business or residential address
  • Get support for military addresses

AccuZIP’s CASS™ RESTful API will manage all of this and more. The tool can also verify secure delivery locations and non-delivery days for businesses.

Who Uses the CASS RESTful API?

Address verification APIs are an important addition to your operations. These are just some of the customers who use the CASS™ RESTful API:

Marketing teams

Targeted mailing lists are one of the keys to engaging your audience. Marketing staff can use our API to verify these segmented lists right in their CRM—before they export them.

Customer service teams

By integrating the CASS  API into their CRM, service reps can validate and correct addresses before they send out forms and other mailed materials. 

Accounting teams

The CASS RESTful API integrates seamlessly into accounting software platforms. This leads to more accurate accounts receivable and faster receipts.

Our API can help fulfill online orders too. The idea is to keep package deliveries as efficient as possible—preventing unnecessary delays and returns. 

Benefits of a CASS-Certified API

Our CASS API is certified by the USPS. It’s also been used to clean and standardize billions of addresses annually for over three decades.

But the benefits don’t end there. Our customers love the flexibility, reliability, and easy implementation our API brings. Here are just some of the things you can expect:

Higher delivery rates

By using an API to verify your address, you can ensure you’re not mailing to an undeliverable address.

Lower costs

Returned mail is a waste of time—and money too. A CASS certified API can eliminate undeliverable mail pieces.

More successful direct mail campaigns

Accurate data leads to more targeted, more effective direct mail campaigns. 

And did we mention a USPS address validation API can integrate into your existing workflow? No matter the size of your business, AccuZIP’s CASS certified point-of-entry API is designed to fit your needs.

Try the CASS RESTful API by AccuZIP Today

Your direct mail campaigns don’t have to be complicated. AccuZIP’s CASS Address Validation API will improve data accuracy, reduce costs, and make delivery easier than ever. With a full suite of features and easy integration, it could be the tool you’ve long been waiting for.

Want to see for yourself? Test-drive the CASS point-of-entry API here. Please email us at api (at) accuzip.com with questions or for more information.

...And I appreciate your help too, even when I ask a silly question. You guys are great and your support is second to none.
D.J., Santa Rosa, CA