I don't read mine at all (talking about a personal server here[0]), because there's a huge amount of noise. The email alerts for it go to a mail folder that I literally never look at, because it gets hundreds of emails per day.

If I only got an email per week or so, I'd probably not filter them to a folder, and actually look at them.

[0] At work, other people deal with intrusion detection there, and ssh access is gated behind a VPN anyway.