Starting in Thunderbird 17.0, the tabs are drawn in the title bar. The old behavior can be restored by setting the preference mail.tabs.drawInTitlebar to false.

  • Type:boolean
  • Default value:  true
  • Exists by default: yes
  • Application support:Thunderbird 17.0
  • Status: Active; last updated 2012-09-17
  • Introduction: Pushed to Daily on 2012-08-08
  • Bugs: bug 771816


true (default)
The tabs are drawn in the title bar of the mail program.
The tabs are drawn in a separate tab bar, and the title bar shows the title of the current tab (e.g. the subject of the currently selected mail).