Tutanota is open source so security experts can verify the code that protects your emails. Our Android app is Google-free making Tutanota the best open source email service.
With its all-round end-to-end encryption and its clear focus on open source, Tutanota is the best email provider when it comes to convenience, security and privacy. We have replaced the need for IMAP by building the Tutanota desktop clients for Windows, Linux and Mac OS that also support offline mode. Our next development steps include conversation view and supporting hardware tokens for 2FA on mobile devices. Our vision with Tutanota is to become a full-fledged email alternative with a calendar, notes, cloud storage - everything encrypted by default.