I started my online business back in 2000, sending hundreds of millions of emails in my own business until, one day, I realized sales were slipping dramatically. I discovered the problem, which was that our emails were not getting delivered, despite the fact that the email service provider claimed 99% deliverability. People using well-known email systems hadn’t been receiving our emails for months. Once I discovered the problem, and set up our own email solution, we saw a 460% increase in sales the very next month and people that hadn’t been getting messages were suddenly engaged again. In the weeks and months following, I was asked by other friends in the Internet space to help them do the same thing. Since 2008, I have been working with top marketers all over the world to improve ...