This one was pretty simple. The logbook is in
C:\Users\%username%\Documents\Flight Simulator X Files\Logbook.BIN
The granted rewards are in
Just copy both files to the corresponding locations. These file paths are for Windows Vista/7/8.
The information was taken from a forum thread.
Thunderbird’s email account settings are all stored in the user’s profile folder. To get the whole setup back, just copy the profile folder from the old machine to the new one.
For me, my email storage location still had the same path, so there was no issue with the actual emails themselves.
For information about moving profile, see https://support.mozillamessaging.com/en-US/kb/profiles