Organic Mailing List

[Gage Clark]

Hi there - has anybody had success creating their own organic mailing list? Could you share what the best ways you found in monetizing it? I created an organic mailing list of about 8K properties (it took quite a long time and was a little pricey, but it turned out highly accurate (~85%)). 

I've considered mailers, but I've also considered selling the list out-right. I appreciate your thoughts and input. 

Thank you!