A method of providing a notification to a client device is disclosed. The method includes, for example, obtaining data associated with the client device with respect to content provided by a plurality of content sources; creating a viewing preference profile for the client device based on the obtained data, the user preference profile indicating content preferred by the client device; detecting a triggering event concerning a digital content; and in response to the triggering event, determining whether to trigger a notification to the client device based on the viewing preference profile.