How to disable desktop notification alerts for Outlook email ?

Outlook has desktop notifications of arriving email turned on by default. If you receive a large volume of mail, or simply while doing something else while Outlook receives email in the background these notifications can get really annoying, and the location for the setting is hard to guess.

To turn off new email alerts:

1. In Outlook, navigate to: Options > Preferences tab > click "Email Options" > click "Advanced E-Mail Options"

2. Under the setting "When new items arrive in my Inbox", clear the "Display a New Mail Desktop Alert" check box

Notes:
In the same location, you may also want to suppress notification sounds, changing the mouse pointer, or displaying an envelope icon in the notification area.

You can also suppress the alerts by directly clicking the down arrow in the upper-right corner of an alert, then click "Disable New Mail Desktop Alert" in the menu.