


Locate and open the new profile folder as explained above and then close Thunderbird (if open).Copy the entire contents of the profile folder backup, such as the mimeTypes.rdf file, prefs.js file, etc.Open the profile folder backup (e.g., the fault backup).Locate the backed up profile folder on your hard drive or backup medium (e.g., your USB-stick).Note: If you just installed Thunderbird on a new computer, you can use the default profile that is automatically created when you first run Thunderbird, instead of creating a new profile. If your existing profile folder and profile backup folder have the same name, simply replace the existing profile folder with the profile backup, then start Thunderbird.a USB-stick or a blank CD-RW disc), and select Paste item. Right-click Hold down the Ctrl key while you click the backup location (e.g.Right-click Hold down the Ctrl key while you click on your profile folder (e.g.to %APPDATA%\Thunderbird\Profiles\ ~/Library/Thunderbird/Profiles/ ~/.mozilla/Thunderbird/ Go to one level above your profile's folder, i.e.Locate your profile folder, as explained above.To back up your profile, first close Thunderbird if it is open and then copy the profile folder to another location. If you only have one profile, its folder would have "default" in the name. Your profile folder is within this folder. Click the View menu and select Show Hidden Files if it isn't already checked.(Ubuntu) Click the Places menu on the top right of the screen and select Home Folder.
