We are currently trying to create a form where the visitor enters their email address and then answers 1 free form feedback question like "What new products would you like to see on our site?" After they submit this question, they get added to a mailing list and they get a 15% OFF coupon code sent to their email as the welcome email from the mailing list. You can't do this with the landing page because the text field is too small. You can't do this with the Constant Contact survey function because you can't change the Thank You page after submission and you can't automatically add the user to a mailing list and send an email with a promo code afterwards.
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