Okay so right now I am getting 70 - 100 opt-in's a day from one youtube video of people who are interested in the software niche. I will also be making another video soon that will have close results so it would be about 140 - 200 opt in a day. My question is how much of those emails should I collect before I start promoting anything to them. Should I just keep making more videos until I am getting about 1000 opt ins and day and wait until at least they've reached 20k. Suggestions much appreciated.