Why Choose Address Lookup API?

Businesses need to know their customers' addresses to confirm who they are, ship their orders, and send promotional materials. They also need to avoid costly mistakes like mistyped or misspelled addresses that can affect the deliverability of mail and lead to expensive reshipping costs.

Incorporating an address lookup API into a website helps prevent those mistakes by verifying the correct location of an address as it is being typed in. It works by offering a set of suggestions to the user, similar to how Google's search engine suggests results when you start typing something. This is also called autocomplete, and it can reduce the amount of friction at account signup or checkout.

A full-fledged address validation software or API performs two types of validation: finding the correct match, and standardizing the address to confirm it matches the accepted postal formatting. It is important for online retailers and delivery companies that need to ensure addresses are deliverable, as well as B2B organizations that need to be able to track their deliveries.

A good address lookup tool will be CASS-certified, which is a verification service provided by the USPS to validate addresses against their database. It is the highest level of validation available for the United States and can check to make sure addresses are valid by comparing them with the official, approved formats that have been created by the postal service. This includes standardized spellings and abbreviations, the inclusion of suite numbers (if applicable), the urbanization descriptor for Puerto Rico (used to identify repeated street names in certain areas), and the country, state, and city code.