Instant notifications
Instant notifications inform users of events that are important to them. These can include posts and comments in which they have been mentioned, replies or likes on their content, or conversations happening in a community that they want to keep a close eye on.
Instant notifications can be viewed in the Lookout Notifications tile, and by clicking the 
in the Activity Stream web part.
Additionally, when a user opts to get them, they’ll receive a notification email for each instant notification they get. The notification email will be sent almost immediately after the event occurs.
Here is an example of such a notification email:
