You're using the attribute_view_gui to show the email field, this means that the system will use the default template for text inputs (assuming you are using Text line datatype). To solve this you should copy the template code from design/standard/templates/content/datatype/view/ezstring.tpl and replace it with the attribute_view_gui code (you probably need to tweak the code to use your variables).
You will now be able to tweak the result to your liking.