I am trying to understand push notifications. The docs (including admin and user guides) jump right into the “how to”. This is fine for setup and configuration purposes but I would like to understand what “push notifications” are. I think there should be an introduction and explanation as to what they are and how they work. Here are the questions I have. Any help would be appreciated.
What are push notifications?
What is being sent and why do I need it?
How often are they sent?
On my server, some days are very low, some are much higher. Why?
What control does an admin or user have over them?
Is it possible for a user and/or admin to alter or regulate how often they are sent?
Are there privacy or security concerns?