Hey' @motrakx' You've asked a very good question and it's not just the list, but how you treat the people in the list. Ultimately, you are trying to build a trusting relationship, turning someone from just downloading your free lead magnet to actually making a purchase of your product. There are many things you can search up online, but it all depends on what type of market you are targeting and the nature of that niche, obviously. With that being said, there are still some basic principles that you can apply that will help get on the right track no matter what niche you are in.
Below I have place some links to blog posts from Patt Flynn, who is a beast at affiliate marketing. You should also check out videos from Gary Veynerchuck. Both of these successful marketers/entrepreneurs tell you about the concept of Give, Give, Give, then ask (As Gary puts it, Jab, jab, jab, Right hook). What this mean is that you give good information, quality data and give more than you receive and then when you ask, your followers would be more inclined to give. May take some time to perfect this of course, based on the information you share and products you sell, but the concept will still be the same.
Here are the links:
Hope that helped.