How to Find Your Mozilla Thunderbird Profile

Locate this important file on Windows, Mac, and Linux systems

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Mozilla Thunderbird saves your personal information in a set of files called a Profile. The Profile houses local mail, copies of messages that reside on the mail server, and changes made to the Thunderbird account settings or toolbar. Thunderbird stores Profile files and program files separately, so you can uninstall Thunderbird without losing your messages and settings. If something goes wrong with a Thunderbird update, your information will still be available.

Instructions in this article apply to Windows 10, Windows 8.1, Windows 7, Windows Vista, macOS, and Linux.

Find a Thunderbird Profile on a Windows PC

Here's how to access your Thunderbird Profile files on a Windows PC:

  1. Open the Windows Start menu.

    Windows 10 Start Menu
  2. In the Search box, enter %appdata%.

  3. Select the Roaming item that appears on the menu.

  4. In the Windows Explorer window, select Thunderbird > Profiles. Each folder in this folder is a profile on your computer.

    Screenshot of Thunderbird profile folder on PC

Alternatively, navigate directly to your profile folder at C:\Users\<Windows user name>\AppData\Roaming\Thunderbird\Profiles\<Profile name>\. Or, use the Thunderbird menu path Help >Troubleshooting information, then select Show Folder.

Find a Thunderbird Profile on a Mac

Here's how to access your Thunderbird Profile files on a Mac computer:

  1. Select Finder.

  2. On the menu bar, select the Go menu.

  3. Press and hold the Option key, then select Library.

  4. Open the Thunderbird folder, then open the Profiles folder.

    Screenshot of Thunderbird Profiles Folder
  5. Your profile folder is within this folder. If you only have one profile, its folder has default in the name.

Find a Thunderbird Profile on a Linux System

In a Linux system, Profile folders are located in ~/.thunderbird/<Profile name>/. However, if you use a third party build from Debian or Ubuntu, those builds store your profile folder in ~/.mozilla-thunderbird<Profile name>. These are hidden folders.

After you locate your Profile folder, back up or move your Mozilla Thunderbird profile, or archive specific folders.