The closest one to try is on this page. A self-generated subscriber list is the ultimate marketing tool as long as you don't abuse it. There are other marketing tools for getting the initial permission like opt-in mailing lists. Opt-in lists can be good. Be aware, however, you are only working off someone else's permission temporarily.
People forget they subscribed and think it's spam.
Such tactics almost never work. We respect the privacy of our visitors. All rights reserved.