I have never had more than 9 at a time. I have learned though, not to even look at them until I am ready to respond, because I will forget if I don't do it right when I get the notification.
I mangled that thought. I mean, if I look the notification goes away, later I will not see it and thus fail to go back and see what I need to respond to.
It's an impaired acoustic reflex. Permanent nerve damage. I just have to live with it. Can't stand the sound of my own voice! My husband has a joke or two about that one! LOL!