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....instance of MailMessage class var eml = new MailMessage { From = "sender@from...to disk eml . Attachments . Add ( attachment ); eml . AddAttachment...