A replacement for Let's Encrypt expiry emails

Let's Encrypt has ended its expiration notification emails and recommends using a monitoring service instead. RenewCanary is a free one.

What you get

• A daily check of the certificate your server actually serves, not just what was issued
• Alerts at 14, 7 and 1 days before expiry (we skip the 30-day alert for 90-day certificates, because ACME clients normally renew around then)
• A Monday digest of every site