3 Quick And Easy Ways To Build A Profitable Opt In List You finally realize that you need a good opt-in list. After reading countless articles and sought expert advices and have read many success stories of people creating a small fortune with opt-in lists you finally decide to have one of your own. Then it happens, you think you have known everything there is to know about opt-in lists and have followed their advices to the T and you still weren’t able to make a profit.