ProtonMail is known for its encrypted email service, which it offers as a more secure alternative to products like Google’s Gmail. In recent years, the company started by CERN researchers has begun to branch out further, offering encrypted contacts through its mobile app and a free VPN service. Now, it’s offering another privacy-focused Google alternative with the launch of an encrypted calendar.
Via https://www.engadget.com/2019/12/31/protonmail-encrypted-calendar/