I think so too, which is why I asked about mailing list mode and pointed out that it’s easy for people to turn off notifications (unless mailing list mode is on).
But there is the max emails per day per user site setting. I think that’s what you’re looking for @Kaulin_Shyam. Sorry I bumbled my first couple of responses!
But the reall problem, I think, is that I somehow misread “emails” to mean “post” rather than “notifications”. Sorry about that. 