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....( new MailAddress ( "sender@from.com" )); message . getTo ()...addAttachment ( new Attachment ( "1.pdf" )); message . save ( "AddAttachments...