Let's Encrypt stopped sending expiry emails
Let's Encrypt announced on January 22, 2025 that it would end its expiration notification emails on June 4, 2025.
What they recommend
Let's Encrypt points to third-party monitoring and names Red Sift Certificates Lite as a free option for up to 250 certificates. Its monitoring options page lists others.
The gap for agencies
An expiry reminder tells you a certificate is close to expiring. By then renewal has already failed at least once. For a portfolio of client sites you also want to know early, which means measuring how much of each certificate's life is used, and you want the domain registration date in the same view.
That is what CertLark adds: a renewal-overdue alert at 80% of lifetime used, domain expiry from public RDAP data, and a monthly report you can send to the client.
Source: Let's Encrypt, Ending expiration emails, checked 2026-11-14.