- Open Automator.app
- Create new Quick Action
- Select Run AppleScript
- Add this:
set inputVolume to input volume of (get volume settings)
if inputVolume = 0 then
	set inputVolume to 100
	display notification "Volume set to 100" with title "✅ Microphone is on"
else
	set inputVolume to 0
	display notification "Volume set to 0" with title "❌ Microphone is off"
end if
set volume input volume inputVolume
- Save as mute-microphone
- Go to System Preferences -> Keyboard -> Shortcuts -> Services -> General
- Find the mute-microphoneservice and set the hotkey  (e.g. control-cmd-option M)