Option 1: Email
I really don’t like email due to its inherent security problems. But if you really want to send an email, please use the form below. Please allow up to 48 hours for a response (email is only checked 1-2 times a day).
Option 2: Instant Messaging
My preference is Signal, but I am happy to use the others listed below.
Apple iMessage / Signal Messenger / WhatsApp : +49 176-626-85007 (messages only, NO calls).
Skype : markoneillonline
Option 3: Twitter
Option 4: Snail Mail