My hosting company has an outgoing mail server that I can use and as long as they’re doing the external DNS of the domain in question it works perfectly well.

Mostly though, from my own domain I am only sending automated messages from applications I host like NextCloud or Grafana from a “no-reply” address. There would almost certainly be privacy implications if I were to use it for personal mail.

So, if yoy are looking for a simple way to get email notifications from automated processes, this ain’t a bad way to go about it. If you want more, I would consider who can ready your outgoing mail and if you are ok with that.