See my comment above, but it is in reference to ProtonMail. You can find many articles about it (search "Protonmail subpoena 2019"), but an example article is

See my comment above, but it is in reference to ProtonMail. You can find many articles about it (search "Protonmail subpoena 2019"), but an example article is here: https://www.privacyaffairs.com/protonmail-surrenders-user-logs/ https://www.privacyaffairs.com/protonmail-surrenders-user-lo... ProtonMail's own blog post about it is here: https://proton.me/blog/climate-activist-arrest https://proton.me/blog/climate-activist-arrest