Enable Confirmation Email: Add Asterisk

In order to continue the good work you've done on Forms UX, I suggest that when a user checks "Send me a copy of my responses," the form's subsequent "Email address" field label could be followed by a red asterisk, similar to all other required fields on the form. The client-side error-checking is nice with its red border and text, but an asterisk would alert the user even before that, in a fashion consistent with the rest of the form.