Let's Encrypt Ends Certificate Expiration Email Notifications

Let's Encrypt has discontinued sending certificate expiration notification emails, effective June 4, 2025. This decision is driven by factors including widespread adoption of automated renewal by users, privacy concerns related to storing millions of email addresses, high maintenance costs, and increased system complexity. Let's Encrypt recommends using third-party services like Red Sift Certificates Lite for expiration notifications. Email addresses provided via the ACME API and associated with issuance data have been deleted, but mailing list subscriptions remain unaffected. Going forward, emails provided via the ACME API will be forwarded to the general ISRG mailing list system, decoupled from account data.