Disable push notification based on users


Is there a way to disable push notification based on the “sender”.

We are using a lot of push notification and often our limit get over near half the month!

We are having 2 “fake” users that we used as a bot that send us message, is there a way we can prevent those 2 users to use push notification, we don’t really to use those notification when those 2 users send message to any other users…