Remove the X

[pcslookout]

Anyway to remove the close button or X from Thunderbird email client so I don't accidentally close it? I use to be able to use Stylish.

 

[Kaido]

It's over a decade old (not sure if it will work for your OS or not), but check out NoClose:

http://www.donationcoder.com/Software/Skrommel/index.html#NoClose

It's a pretty easy hotkey program. Open Thunderbolt & then hit CTRL+1 to zap the X button. Very convenient for situations like yours where you want to prevent accidental closure from clicking.