FastMail vs Proton Mail

FastMail provides independent, ad-free email and calendar hosting designed for privacy, speed, and efficiency. It offers a clean, lightning-fast interface across web and mobile applications with robust tools to keep your inbox organized. Built for individuals and businesses seeking a reliable alternative to big tech, FastMail supports custom domains, advanced spam protection, and seamless integration with standard email clients via IMAP, SMTP, and CalDAV.

Proton Mail is a secure, privacy-focused email service founded by CERN scientists and protected by strict Swiss privacy laws. It utilizes end-to-end encryption and zero-access encryption to ensure that even the provider cannot read user messages. The platform offers a seamless experience across web and mobile devices, featuring modern interfaces, custom domain support, and integrated calendar and drive services. Designed for individuals and organizations seeking ultimate data confidentiality, it removes ads and trackers from standard email workflows.

• Completely ad-free with a strong focus on user privacy
• Lightning-fast web interface and responsive mobile apps
• Easy setup for custom domain email hosting
• Reliable customer support and robust spam protection

• Strong Swiss legal protection and privacy jurisdiction
• Zero-access encryption means data cannot be handed over to third parties
• Ad-free experience with no tracking of user habits
• Open-source client apps audited by independent security experts

• No permanent free tier available, only a limited trial
• Does not include a built-in free email option like major consumer providers
• Advanced administrative features require higher-tier plans

• Free tier has strict storage limits and features disabled
• Metadata such as sender, recipient, and timestamps cannot be fully encrypted by email standards
• Paid subscription required for advanced features like custom domains and multiple addresses