I am fishing for ideas without going into to much detail yet.
Assume you have built up a database in 7 years of 30000 people in Excel with at least first name, cell and email. In my mind as a layman I would think that a third will fall away due to duplications and/or outdated info.
What would you do to gain an income from it without selling the DB which is probably illegal anyway? If possible MLM would not be the preferred solution either.
All (whacky) ideas welcome as a good solution probably lies in a mix of more than one idea.