How to make Thunderbird infinitely better Show more
1. Right click on any bar or widget and check "menubar", then choose "Customize"
2. Remove the hamburger menu by dragging it to the palette
3. Remove any buttons, such as "chat", that you don't use
4. Drag the remaining buttons to the menubar to the right of the menus
5. Drag the search bar from the toolbar to the menubar
6. Drag the separator from the toolbar to the palette. The toolbar should disappear
7. Click "Done". You're done!