CertNotifier - Get notified before your certificates expire

I'm a 17 y/o solo developer and this is my first product launch! With Let'sEncrypt ending email reminders for their fantastic free certificate service in June, I personally needed something to fill the gap. CertNotifier is that something! There are other services out there, but they do too much, and really only exist to upsell you on larger offerings. CertNotifier aims to do one thing well--monitor your certificates and notify you before they expire, that's it! Consider checking it out, dropping an upvote, and following me on X at @evanchuali.