What Do You Use To Mail Ex-Paysite Members?

I think next year i might have a forray in to mailing ex-members to the Condom Cash paysites the month after they leave to see if that can generate some additional incomes however, im really not sure how i would go about doing this.

Do any of you folks currently email your old paysite members to try and entice them back in to joining? If so what type of things have you found work to get members back and how do you handle the actual mailing itself, through 3rd party scripts?

Any advice you can offer would be appreciated :)

Regards,

Lee