I’ve mainly gotten false positives, myself.

[justcallmelarry@lemmy.dbzer0.com]

I’ve mainly gotten false positives, myself. When I’ve added another subdomain or something and the certificate gets set up differently, so then you get 2-3 emails saying domain X will expire, but if you connect to the url you see it has 80+ days left.
Setting up your own monitoring solution is probably long overdue for myself, and it’s nice I’m getting forced to do it, in a way