When building a web application, postal address APIs can be invaluable tools for creating, validating, and storing addresses. Whether you're building a website or using an API, there's an address-matching tool to fit your needs. The USPS's Coding Accuracy Support System (CASS) evaluates address-matching software. To receive the certification, a product must achieve 98.5% accuracy in correction and 100% delivery coding.
When using a postal address API, you can choose to validate the address against current USPS data or make corrections only to the last line. The USPS's API can also validate addresses with minimal or full address validation. Address validation, including ZIP+4 delivery points, is the default feature of the API. You can use it to check the address of a large number of people. The API can also verify address information and make corrections if the last line is missing or is in the wrong format.
If you are building an application, the USPS provides three types of address API suites. The validation APIs check for accuracy, and the address lookup APIs verify the delivery of mail to a recipient. Address validation APIs are highly integrable and can connect to your website, database, or CRM. Address validation APIs also save time and effort for developers by eliminating coding work. They are an excellent choice for businesses of all sizes.
USPS's postal address API is free, but has limited data and restrictive terms of service. It also lacks millions of valid addresses. Using USPS's address API is better than relying on an address verification API in the cloud, but is limited and has less data. You should use an address verification API if you need to send physical mail. Then, you can use this API to send emails to your clients.
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