BuddyPress.org

I may be missing something here – I hope not. So, when a person has replies to their comments, they’re not being notified like they do when someone sends them a private message. Is there any way to configure buddypress or use a plugin that would notify the users whenever someone responds to their activity? Right now the users are searching through the history log to see who might have responded to that, so instead of them looking for the responses, can the responses be converted into some notifications? Thanks! Any other suggestion for the solution would be appreciated.