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....auto eml = MailMessage :: Load ( u "message.eml" ) eml -> Save...get_OutlookTemplateForma ()); eml -> Save ( u "message.oft" , saveOptions...