1. After clicking on the cog icon in the top right of the dashboard and selecting Preferences select Notification Settings from the list to the right hand side.
2. From here, you can select whether or not your account displays Desktop Notifications when you receive new messages into the Priority Inbox. This will be set to active by default and you can change this to inactive by selecting that option.
3. Once you’ve adjusted this as required, remember to Save your settings.