Moving Thunderbird email setup from win10 to Linux Ubuntu

Solution 1:

Yes, moving your profile folder from Windows to Linux will work:

Important: Make sure you run the same version of Thunderbird on Linux that you run on Windows.
- If the version on Windows is behind of the version on Linux, go to http://archive.mozilla.org/pub/thunderbird/releases/, download and upgrade your Windows version to the exact same version you run on Linux. Do not upgrade to a newer version!
- If the version on Linux is behind of the version on Windows, check if a newer version was backported.
Open Thunderbird on Windows.
Click on File > Compact Folders * and wait until all folders were processed (watch the statusline).
Click on Help > Troubleshooting Information *. Then hit the Open Directory button:
Close Thunderbird
Delete the pkcs11.txt file.
Go up one folder
Copy the XXXXXXX.default(-release) folder to an USB drive.
Open Thunderbird on Linux.
Click on Help > Troubleshooting Information *. Then hit the Open Directory button:
Close Thunderbird
Go up one folder
Remove the YYYYYYYY.default(-release) folder
Copy the XXXXXXXX.default(-release) folder from your USB drive.
Edit the profiles.ini file with an editor of your choice and replace each occurrence of YYYYYYYY.default(-release) with XXXXXXXX.default(-release).
Start Thunderbird on Linux - everything should be in place now.