Originally Posted by Furf

I presume you must have given your email address otherwise how the hell would they send you an email?

I use a Wordpress plugin called Tideo

I can track in real time users that visit my site. I can contact them while they are on my site. I can see which page they are currently viewing and ask questions regarding that.
They can ask a support question and I can answer in real time or, I can send an email later following up the support question from the chat box.

What I can't do is somehow send an email to some random without knowing that persons email first.