Manage profiles when Thunderbird is open
or menu bar. If the Thunderbird menu bar is not visible, press the Alt key on your keyboard to temporarily make it visible. On the Troubleshooting Information page that opens, click the about:profiles link. This will open the About Profiles page shown in the image below.
How do I open Thunderbird profile manager?
Starting the Profile Manager
Open the Terminal application, then type " /Applications/Thunderbird. app/Contents/MacOS/thunderbird-bin -ProfileManager " and press Return.
How do I open profile manager?
+R on the keyboard. A Run dialog will open. You can use -P , -p or -ProfileManager (any of them should work). Click OK.
