ProtonMail vs Runbox

ProtonMail is the world's largest secure email service, designed to keep your private communications truly private through end-to-end encryption and zero-access architecture. Based in Switzerland, it ensures your sensitive data remains shielded from third-party tracking, advertising algorithms, and unauthorized surveillance. With apps available across web, desktop, and mobile devices, it seamlessly integrates advanced cryptographic security into your daily workflow without sacrificing ease of use. Users can easily send encrypted emails to anyone, manage custom domains, and organize their inbox with modern productivity features.

Runbox is an independent email hosting provider based in Norway that places a heavy emphasis on privacy, security, and environmental sustainability. Operating since 2000, it leverages strict Norwegian privacy laws and GDPR compliance to ensure user data remains confidential and protected from foreign surveillance. The service is fully powered by 100% renewable energy and operates on a carbon-negative footprint. Runbox offers an ad-free experience, custom domain support, and robust spam protection while maintaining full compatibility with standard email clients via IMAP, POP3, and SMTP.

• End-to-end and zero-access encryption
• Protected by strict Swiss privacy laws
• Open-source and independently audited apps
• Free tier available with no ads

• Protected by strict Norwegian privacy laws and GDPR
• Powered by 100% renewable, carbon-negative energy
• Completely ad-free with no data tracking for advertising
• Supports custom domains and standard mail protocols

• Free tier has limited storage and features
• Advanced features require a paid subscription
• No native IMAP/POP3 support without a bridge app

• No permanently free tier available
• Web interface feels somewhat traditional and dated compared to modern consumer apps
• Higher cost per storage gigabyte than major mainstream providers