What is the best rule to build the audience to Target Social media users

Currently, we can set web and email notifications to get notified if an activity is approved or deactivated and many more. But there is no way we can set automated notifications to come when an activity reached significant or has a winner or when auto targetting when the confidence level reached more than 60%. It would be great to have this feature available so when we run multiple activities we can keep track of how activites performing and know the winner as soon as it finds one.