How to Build an Email List that Makes Money

How to Build an Email List that Makes Money: "I recently sent an email to my list of 1500 subscribers promoting a particular product not that relevant to my email list, that single email made me five sales. Since that was one of the very few serious promotions I did to my email list I figured out building a solid email list of responsive buyers could be a great source of income and I have decided to share my approach to it."