Hi-
This is a classic problem in InfoPath. Sadly, the email view is distorted and the solution is to have two sections. One section for "filling out" the form and one section for "emailing". That way, you can format the UI differently, so that it looks ok when filling out and it looks ok when emailed. You can switch between showing one section and hiding the other. I think this has been discussed before but if the forum search doesn't return anything and you need additional help, let us know.
Thanks.