Do you need a form to set the values for the email? If you would just like UE to run on the page and use the values from the recordset there is not need to have a form for it. You can have a simple form that just has a submit button if you would like it to trigger on the button being pressed.
You could also add the form to a new page and just have a recordset like the one on your details page that is filtered by the record id to get at the values. You could even add the form to this other page and specify the details page as the action. Then once the form is created you can just copy it into your details page where you would like to see it.