Hi. I'm building an e-mail list for my business and just got a business partner who runs a web service, and every people that subscribe to my list will get a one year free access to his service (and he will make money with the possible renewals after the first year). I'm wondering that how should I do this? I think the best way would be some kind of coupon that the subscribers would receive after submitting their email, but how do I do that? What do you think is the best option?