https://developer.mozilla.org/en-US/docs/Mozilla/Developer_guide/Build_Instructions/Simple_Thunderbird_build#Problems_Building
On Windows: check that the MAPI header files from https://www.microsoft.com/en-us/download/details.aspx?id=12905 are installed because the MAPI header files are not bundled with Visual Studio 2013/2015 (Windows SDK 8.1/10). You should copy the header files to a Windows SDK include directory so that the build process will find the files, for example to C:\Program Files (x86)\Windows Kits\8.1\Include\shared and/or C:\Program Files (x86)\Windows Kits\10\Include\10.0.nnnnn.0\shared respectively, where nnnnn is the highest number present on the system.
