To avoid sending junk mail, you may want to use a mailing address verification service. These services are available free of charge, and they compare the address with the database and return an answer with a yes/no rating. These services are also available as APIs. In addition to checking addresses, some providers offer additional functions and information, which can be beneficial for your business. This article will discuss some of the most popular types of address validation services.
There are several options for mailing address verification. The USPS offers a free service through their website. In this case, you would need to manually type in the addresses. You can also license their services to third-party companies that provide CASS certification in bulk. These companies will typically allow you to import a CSV or Excel format of your address list, and some even offer APIs to integrate with your own applications. If you'd like to use an automated service, consider the SmartyStreets mailing address verification tool.
The third-party companies that provide address validation APIs are more flexible than the USPS. The USPS focuses on putting together address data, and does not share the information with any other company. These companies, however, build their software with address data in mind and allow them to access the data in a less restrictive manner. They often combine their own data with supplemental information. Most of these services make their augmented data accessible through an API.
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