go to /home/yourusername
Press<em><strong> Ctrl+H</strong></em> to show hidden files and go to <strong><em>.thunderbird</em></strong>.
Then, just copy it where you want.
This folder holds <strong>everything, </strong>themes, addons, cached emails, email accounts with their details etc.
- If you want to recover just copy the folder into home folder. Mind
- permissions when you copy this folder.