My preferred method of communication is PGP/GPG-encrypted email. You can find my GPG key here.
If you are in ProtonMail then you can just email me directly with no additional encryption required.
My email address is my first name with the following string added:
And one more thing please: make sure you put
[221b] in the subject line. Otherwise the message will be silently discarded my my automatic filters. This is necessary to combat Spam.
If that’s too much, you can always reach me in Twitter (via DM) and LinkedIn (via InMail).