Do not display New Mail alert for users

Category

User Configuration > Administrative Templates > Microsoft Outlook 2016 > Outlook Options > Preferences > E-mail Options > Advanced E-mail Options > Desktop Alert

Scope

User

Registry Key

HKCU\software\policies\microsoft\office\16.0\outlook\preferences

Description

By default, users receive an alert message on their desktops when new mail arrives. By enabling this setting, the alert is not displayed for new mail.