Class Libraries & REST APIs for the developers to manipulate & process Files from Word, Excel, PowerPoint, Visio, PDF, CAD & several other categories in Web, Desktop or Mobile apps. Develop & deploy on Windows, Linux, MacOS & Android platforms....network protocols, for example, SMTP, MIME, POP3, IMAP; message file...using protocols like POP3, IMAP, SMTP, Exchange Web Services (EWS)...