Is There a Limit to How Many News Letters You Can Send?

I want to ask you how we as market or should be using news letters on linkton. I have looked at how often people are saying they do their news letter, and you can go all the way to daily. Is there any limit to how many of these you can send? i haven't seen a limit. Question, does it tell you whether people interacted with it over mal verses on the platform? I haven't been able to see that. Ye, that be interesting to see which one drew the attention to you has a sense as to whether or not more people are going to be seein it through their emal in box, versus seeing it through a notification onlington.