ProtonMail

ProtonMail is an end-to-end encrypted email service founded in 2013 in Geneva, Switzerland, by scientists who spent time at the CERN research facility. ProtonMail uses client-side encryption to protect email content and user data before they are sent to ProtonMail servers, unlike other common email providers such as Gmail and Outlook.com.

Available in: English, Catalan, Chinese, Dutch, French, German, Hungarian, Italian, Japanese, Polish, Romanian, Russian, Spanish, Turkish, Portuguese, Ukrainian

https://protonmail.com/
https://en.wikipedia.org/wiki/ProtonMail
https://twitter.com/ProtonMail