MAPI Developer: Download latest MFCMAPI from the Github
As you aware that MFCMAPI provides access to MAPI stores to facilitate investigation of Exchange and Outlook issues and to provide developers with a sample for MAPI development. If you look to download the latest MFCMAPI (x86/x64) then you can get it from the Github @ https://github.com/stephenegriffin/mfcmapi
Hope this helps.