What is Postal API?
A postal API, also referred to as snail mail API or address validation API, is an application programming interface that allows software developers to verify postal information automatically and efficiently. It is used to integrate with websites, databases and CRMs to ensure high-quality data and prevent costly mistakes that could result in lost packages or delayed deliveries.
The USPS offers a suite of postal APIs including an address lookup API, ZIP Code API and more. However, their API is not very well documented and has frequent downtimes. Melissa and Loqate are two other popular providers of postal APIs that offer more reliable services. Both provide a rich set of functionality, including address standardization and validation, and offer a variety of languages and platforms to choose from.
Postal APIs help businesses automate their day-to-day mailing activities and conduct direct mail campaigns confidently without any manual effort. They can also be used to process transactional and financial documents. They eliminate the need for hardware to create and print labels, thereby saving on maintenance costs and space requirements. Moreover, they can be used to generate labels for different shipping operations such as international transport and product returns, thus ensuring that your documents, checks, invoices and marketing items reach their destination on time.
A good postal API should be able to provide robust, reliable and flexible integrations with a wide range of systems. It should offer easy-to-use documentation and a stellar official SDK in multiple languages including Python, JavaScript, C#, iOS and others. It should also provide a variety of test modes and a self-service portal to troubleshoot errors and bugs.
SITES WE SUPPORT
Direct Mailing APIs – Wix















