CashMail
This program allow webmasters to signup as affiliates of your program and place the code for your program on their pages, which allows surfers to enter their email addresses to join your mailing list. Each time a surfer enters their email, the refering webmaster gets paid a set amount. (eg. 5 cents per email address). Other features include: duplicate email checks, provides detailed reports to help in catching cheaters, a complete up to date stats report for each affiliate on request in real time, show surfers a thankyou webpage, and more.