Address Standardization API

 Address standardization is the process of making sure addresses are formatted correctly for USPS. This includes checking spelling, correcting capitalization and letter casing, and adding zip+4 when applicable. This is an important step in ensuring your mailing list is accurate and deliverable. Accurate addresses are vital when launching direct mail campaigns, sending customer invoices or notifications, and for other business functions. If an incorrect address is used, the message or document will not reach its intended recipient, costing you money and causing a negative impression with your customers.



Luckily, there are a few options to help you with this process. One is to use an API from the USPS that provides address validation and standardization services for a fee. This will check the address against their database and return whether it is valid or not. Another option is to use an international address lookup API such as Melissa or Loqate. These solutions will provide you with insanely accurate addresses and geocodes for 240 countries and territories. They are typically easier to work with than the USPS APIs and have documentation that is less confusing.

Lastly, you can use a service like Placekey to do all of the standardization/normalization, verification and matching for you. It will produce a unique identifier for the address that is uniquely recognizable and understandable by the USPS system. This removes the need for you to perform any of this work manually and makes it possible to match your data against a huge, accurate address database.

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