In an article written by John Paul Mains on Marketing Land, he admits that putting the customer on a landing page is really important. But once that customer makes a conversion, a lot of sites will just throw a confirmation page in their face and call it good.
According to John, that’s a nay nay. Having a good Thank You page can be as important as that initial landing page. Not using an opportunity to engage with your customers with a Thank You page can be a mistake. When a conversion is made, why not send a thank you, as well as an email for your time and effort?
In his article John describes what it takes to make a great Thank You page. Check it out here:
http://marketingland.com/rethinking-the-lowly-thank-you-page-59892