I have about 250,000 emails, wondering on how to monetize?

[Cloudarok]

I harvested these emails a few years ago, mainly through my website. I was wondering if there is any provider out there that would not need single or double opt-in? Or if there was any way to monetize those emails. Thanks for any help!
Not sure how to answer back a specific person back. - I had a website with a niche, people wanting to know more info would subscribe, I got up to 250,000 people. I ended up stopping my website, and closing my Aweber account, which was the email service I was using. Today I realize the potential in those emails, I reopened my Aweber account and tried adding all those emails, but now it's sending them a Email asking to resubscribe or become double opt-in. I was wondering if I could go around that in any way, and possibly make money?