So I have found myself with 100,000's of HIGHLY qualified emails in different niches. For Example, I have 100,000 emails from people looking for stock tips and trading advice and almost all double opt-in. I have other kinds of lists of similar quality as well. Here is the issue.. I have never done email marketing before. I am looking for some advice on how to go about marketing to the lists. I know someone making thousands daily through CPL harvesting on Facebook but Im not a good enough friend for him to give me all the info. Should I be looking at CPA or CPL or something else? Thanks for your time and if you dont mind explaining clearly your suggestions. Since I am new to this sector.