Notifications join and count as number

Is there anyway/code... or something to make the notification join as 1 when they come from the same source.
Example 1: Someone send me a pm > I got a notification "You have just received a message from A."
That person keep sending me another pm > I won't receive a new notification but the old notification above re-appear as "You have just received 2 messages from A."

Example 2: Someone comment in a topic which I watched >> got notification "Person B just wrote a comment in your following topic."
That same person B do more comment >> no new notification but the old one change to "Person B just wrote 2/3/4/5... n comments in your following topic."

No sorry it can not be done