Email, Messaging, & Video Calls Email 52 52 people found this article helpful Back Up or Copy a Mozilla Thunderbird Profile Copy your email to another location by Heinz Tschabitscher Writer A former freelance contributor who has reviewed hundreds of email programs and services since 1997. our editorial process Heinz Tschabitscher Updated on February 02, 2020 Stuart O'Sullivan / Stone / Getty Images Email Yahoo! Mail Gmail Tweet Share Email All your emails, contacts, filters, settings, and whatnot in one place—Mozilla Thunderbird—are great, but in two locations, they are even better. 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. Instructions in this article apply to Mozilla Thunderbird 68.4.1 on Windows 10, 8, and 7, Mac OS X 10.9 and higher, or GNU/LINUX. 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. Open your Mozilla Thunderbird profile directory. From within Thunderbird, select the Menu button or bar. Select Help and then choose Troubleshooting Information from the Help menu. The Troubleshooting Information tab will open. Select Open Folder next to Profile Folder in the Application Basics section. The profile directory folder will open. Exit Thunderbird. Go to one level above your profile's folder, such as C:\Users\You\AppData\Roaming\Thunderbird\Profiles Right-click your profile folder, which should have the format xxxxxxxx.default, and select Copy. Right-click the backup location and select Paste. 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. The profile folder names must match exactly, including the random 8-character string, or replacing the folder will not work. If they do not match or you want to restore or move the profile to another location, copy and paste the contents as follows. Exit Thunderbird. Create a new Thunderbird profile and then exit the Profile Manager. If you are moving to Thunderbird on a new computer, you can use the default profile Thunderbird creates automatically without creating a new one. Locate and open the backed-up profile folder. Select all of the folder contents and choose Copy. Locate and open the new profile folder. Paste the contents of the backed up profile folder into the new profile folder. Choose to overwrite existing files of the same name. Start Thunderbird. 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.