Tuta (formerly Tutanota)

An end-to-end encrypted email service based in Germany. It offers a secure alternative to mainstream email providers, with a focus on privacy and security. Emails between Tutanota users are automatically encrypted, and it provides features to send encrypted emails to non-users. Tutanota is open-source, allowing for transparency and community review of its security features. The service is funded through premium subscriptions and donations, allowing it to operate without relying on advertising or data mining. Tutanota offers both free and paid plans, with the paid plans providing additional storage and features. The service is available on web, iOS, and Android platforms.