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....$mapiMessage = new MapiMessage (); $mapi_msg = $mapiMessage -> fromMailMessage...MapiMessageFlags as UNSENT and FROMME $mapi_message_flags = new MapiMessageFlags...