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....try catch Bug Enable mail clients activity logging in a .NET...true , "EWSDiagnosticLog" : "ews.log" , "EWSDiagnosticLog_UseDate"...