Find what version of Thunderbird you are using

Thunderbird Thunderbird Last updated: 57% of users voted this helpful
  1. Click the Application menu button New Fx Menu, then go to the Help menu and choose Troubleshooting Information. A new tab will open with information about your setup.

    tb52-help-troubleshooting

    tb52-help-troubleshooting-mac
  2. Under Application Basics, refer to the number beside Version. That is the version of Thunderbird you are using.

    tb52-version
    tb52-version-mac

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