If I can shebang nutshell (assuming all the builtins from bash or even sh work) and pass a flag to remove all the fancy UI-for-humans formatting so that piped commands int eh scripts work, then I think this is incredible.
Yeah having this installed along side other more “standard” shells is fine I guess, but it looks like maybe it has some neat functionality that is more difficult in other shells? I guess I’d need to read up on it more but having a non-interactive mode for machines to read more easily would be a huge plus for it overall. I suppose that depends on what it offers/what it’s trying to accomplish.
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.