Encrypted email service ProtonMail is now accessible over Tor

The creators of encrypted email service ProtonMail have set up a server that's only accessible over the Tor anonymity network as a way to fight possible censorship attempts in some countries.ProtonMail was created by computer engineers who met while working at the European Organization for Nuclear Research (CERN). The service provides end-to-end encrypted email through a web-based interface and mobile apps, but the encryption is performed on the client side, and the ProtonMail servers never have