“Notifications” is the section of PC Settings where you come to configure all the notification-related settings for Metro apps.
The general notification settings include the following.
Besides that, you can toggle notifications from an individual application. If you don’t want to hear from a specific application, you can simply turn the notifications off for that app.
As shown in the above image, I have turned off notifications from Music; I know, after all, what song I am listening to!
Also, I have disabled annoying notifications from Messaging and from Internet Explorer.