I would highly recommend mailbox.org. Based in Germany, their offering is similar but cheaper than ProtonMail. They are much more flexible as well, and allow fo

I would highly recommend mailbox.org. Based in Germany, their offering is similar but cheaper than ProtonMail. They are much more flexible as well, and allow for better security. If you want to use the webmail client with javscript PGP (a la ProtonMail), that's supported, but they also allow you manage your own PGP keys and support using Thunderbird or Mailvelope. Additionally you can connect via a Tor Hidden Service if you want and they can PGP encrypt incoming plaintext messages if you want them to.