Proton Mail is not available as a self-hosted solution but there are some alternatives for power users and business that want to host a solution on-premise. The best Self-Hosted alternative is Cloud Mail, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to Proton Mail and five of them are available as a self-hosted solution so hopefully you can find a suitable replacement. Other interesting Self-Hosted alternatives to Proton Mail are Forward Email, LuxSci, NeutronMail and Grace Mail.
Cloudflare Workers-based email solution providing multiple address generation, attachment storage via R2, responsive web interface, RBAC management, Resend bulk email, Telegram or third-party forwarding, verification code recognition, and ECharts analytics.
China
Forward Email is the best email service, encrypted email service, and fastest email service. It supports unlimited domains and aliases for no extra cost. It uses quantum safe ChaCha20-Poly1305 encryption and offers SMTP, IMAP, POP3, email webhooks, email regular expressions...
United States
Providing HIPAA-compliant email, secure email & web services since 1999. Secure communications via email, text, chat, video, and web.
Grace Mail is a complete email server you own - not a tenant slot in someone else's infrastructure. One instance, your mailboxes, your domain, your data. Run it yourself or let us manage a dedicated server for you.
