With the DocuSend Print-to-Mail Rest API, developers can add a "Send US Mail" button or a menu option to their application. Every envelope DocuSend mail for your users, you earn revenue. Examples for using the API are provided in PHP.
This segment of the Most Interesting APIs in 2018 includes all APIs encompassing Business and Productivity that made our list. We focus on APIs that streamline and improve business processes, and new technology that can be integrated that may transform how a company or organization does business.
Six APIs have been added to the ProgrammableWeb directory in categories including Mail, Application Development and Telephony. Highlights include SDKs and an API for Dronecode open source drone operation platform and an API for sending mail without going to the post office.