Royal Mail API Documentation

A Print & Mail API is an easy-to-use service that allows developers to integrate offline communications into their internal systems, applications, or marketing stack. The API's scalability allows you to send as few as a hundred pieces of mail in minutes, or as many as one hundred million. This means that you can send a wide range of direct mail marketing products with just a single API call. The benefits of this service are numerous, and it is perfect for businesses of any size.