Let's Encrypt ended its expiration notification email service on June 4, 2025.
Most subscribers now use automated systems for certificate renewal.
Removing email storage enhances user privacy and reduces infrastructure complexity.
Discontinuation saves tens of thousands of dollars annually in notification costs.
Users can use third-party services like Red Sift Certificates Lite for alerts.
Email addresses provided via ACME API have been deleted and future addresses will not be stored by Let's Encrypt.
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