While staring, the application will create a new profile in the default folder Profiles (you can see the path above). If your computer is out of order, your Windows is reinstalled or if you just need to transfer your Thunderbird data to another computer, you can do it by restoring it from a previously created profile backup.
Restoring Thunderbird Data from a Backup Copy Copy the folder with the profile and save it to a convenient location (for example, disk D or an external hard disk).
