Print and Mail Physical Letters With Letter API

Sending physical postal letters is a powerful way to communicate with your customers. It can help boost your customer engagements and increase sales. However, it requires a lot of time and effort. With Intrade's letter API, you can automate the entire process from printing to mailing your letters without any hassle.


The letter print and mail API offers you an easy way to send letters across the world. Our CASS certified letter API validates addresses against the USPS database of about 190 countries to ensure that you get the right address for each recipient.

With the letter API, you can customize your letters to enhance their appearance. Select from a variety of paper stock to make your letter stand out in the mailbox!

Our print and mail network takes care of drafting and printing multiple-page letters, which are then mailed securely in sturdy envelopes. We have partnered with the best printers in the industry to provide high-quality printing services.

Aside from printing, the letter API also automatically stamps and delivers your letters to the post office. This process saves your valuable time and reduces costs.

Our letter API is scalable and offers you the flexibility to conduct your letter marketing campaigns in large volumes. It can easily handle millions of API calls at once, and you can change the permissions for users as per your requirements. Moreover, our API is protected by HTTPS authentication.


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