Hi all, I'm looking for a (free?) solution that can periodically check a domain name. Any suggestions? Here's a few things that I would like to achieve:

• Monitor SSL certificates for a domain name. Letsencrypt certificates should renew every 90 days, and if not, I should get a warning.
• Domain name registering: I have a some domain names that I would like to register. They're not available right now so I'll have to wait until they expire and be available again. It would be great if I could get a notification when they're almost expired/in their grace period/available again so I can hopefully register them :-) Same thing for my own domains, would be great if I can get a notification if my domain expires (or a domain maintained by my customers)