You can turn off sound notifications in Outlook for MacOS by completing the following steps.

	- Click on Outlook in the menu bar
 
	- Click on Preferences...
 
	- Choose Notifications & Sounds
 
	- Under the "Sounds" section, uncheck the box(es) next to each item you want to not hear a sound for.
	
		- If you prefer to hear a sound, you can check a box to turn sounds on and even play around with the type of sound that is played, if desired.
 
	
	 
	- Close the window when complete. It will automatically save your settings