"You’re probably doing email introductions wrong"

"Use the double opt-in introduction

A double opt-in introduction is the nice, non-lazy, respectful way to introduce people and not be viewed as a terrible person. Here is what you should do:"
http://qz.com/457699/youre-probably-doing-email-introductions-wrong/?utm_source=atlanticFB

Short and very sensical :) I make and receive lots of these kinds of introductions and they work maybe half the time, let's be real.