Build: 21.2.21207.01
This is the unicode continuous integration build of MFCMAPI.
If you just want to run MFCMAPI or MrMAPI, get the executables (exe). If you want to debug them, get the symbol files (pdb).
The 64 bit builds will only work on a machine with 64 bit Outlook installed. All other machines should use the 32 bit builds, regardless of the operating system.