ProtonMail started accepting Bitcoin in 2017, and prefers to not sell its BTC to safeguard independence.
Encrypted email service, ProtonMail, is not cashing in Bitcoin payments made for its services, and apparently “hasn’t for years.”36631
Privacy-focused encrypted email service ProtonMail is considering launching an ICO “within the year”.17205
ProtonMail, an open-sourced encrypted mail service founded by MIT and Stanford engineers at the CERN research facility, has suffered from a series of extremely powerful DDoS attack from unknown hackers790
Anonymous email service developed by CERN scientists is accepting Bitcoin donations to fund expansion following an overwhelming response to its beta release.639