I want those subscriptions be active but only inside the borders of FB. I do not want to unsubscribe from everything just because I visit FB once a year or less

I want those subscriptions be active but only inside the borders of FB. I do not want to unsubscribe from everything just because I visit FB once a year or less. Those guys are my friends or schoolmates. But if FB provided that kind of instrument which unsubscribes from everything at once, I would do this just for the sake of being nice to Facebook, I understand that these annoying messages are not exactly a spam. For example, I never use their private message features, so I really do not need those 17 emails per day.