Thanks Jason! We've worked out a solution where we've created our followup pages in our CMS. Next step is to hide/obscure the URL of the followup page.
Here's the script if anyone's looking:
<script src="//app-aba.marketo.com/js/forms2/js/forms2.js">
<form id="mktoForm_xxxx"> </form>
<script>
MktoForms2.loadForm("//app-aba.marketo.com", "xxxx", xxxxx,
function(form){
//Add an onSuccess handler
form.onSuccess(function(values, followUpUrl){
location.href = "CMS Followup URL";
return false;
});
});
</script>