What Is The Postal Code Verification API?

The postal code verification API is a software solution that allows web developers to access and manipulate United States Postal Service (USPS) data. It provides developers with a means to verify addresses and perform a number of other functions such as address validation, ZIP+4 appending, and more. The USPS API is free, but there are limits on the number of lookups you can make per transaction.

For example, a developer may use the API to validate and standardize an address before sending it out to customers via direct mail. This ensures that the company doesn’t waste resources such as paper, ink and postage on a piece of direct mail that will end up in the shredder. It is important to have a robust and reliable postal code verification API because it allows companies to cut down on costs, increase their deliverability rates, and ultimately boost revenue.

Another use of the postal code verification API is to allow developers to pre-populate an application’s city and state based on the user’s ZIP Code entry. This makes it much easier and faster for users to complete an online form or purchase a product. This translates into increased conversions for the website or application.

In addition to these benefits, a robust and reliable postal code verification API also helps to reduce the amount of time that the mail spends in transit. This is because the data used to verify an address is up-to-date and accurate. This saves both the sender and the receiver a great deal of time, effort and money.