"Because I include my page I don't want those tags!"
so you add UE to page that you use the php include function to add it to another page:
<?php include("UEpage.php"); ?>
is that correct?
if so, that is a bad idea, the problem with this is that it will add the php code for sending the email within the body of the page it is being included to.
Instead, you should use framework builder to add the UE page to another page as a plugin. The advantage of plugins is that it takes the pieces of the page: code above the doctype, code within the head and code within the body and adds it in the correct places in the page it is being p[lugged into. this will make it so the UE behavior code gets placed in the right location above the doctype, so that if it needs to redirect to another page after submitting, it wont cause errors.