I do not have a general purposes email ( I actually use to have one but it got irredeemably full of spam) but I carefully crafted three main channels to get exposed to all relevant and promising opportunities.
You can find them below:
Proposals of Blog Post/Speaches
author at andreacirillo.com
you can use my linkedin profile to get in touch with me for proposals of every kind of collaboration, either requesting to connect or sending inmail messages: linkedin profile
interesting stuff to read or watch
you can use one of my twitter profile to refer any interesting link or stuff, even considering that if it is interesting, why shouldn’t we share it to everybody?