Fortunately, copying all your Mozilla Thunderbird data is straightforward. Create an archive of all your Mozilla Thunderbird data (emails, contacts, settings) as a backup or to copy it to a different computer.
Back Up or Copy Your Mozilla Thunderbird Profile
You need a backup when you have lost your data. Copying a Mozilla Thunderbird profile makes for a perfect (and easily created) backup.
Restore a Thunderbird Profile Backup
Replacing the existing profile with the backup and starting Thunderbird will restore an existing profile folder, provided the backup folder has the same name. If they do not match or you want to restore or move the profile to another location, copy and paste the contents as follows.
Move a Thunderbird Profile
If you want to move a profile or set up Thunderbird to use a profile stored in another location, moving your Mozilla Thunderbird profile allows you to change the location of your profile, including emails, contacts, settings, filters, and more.
