How would I set it so email isn't required upon registration? Ideally I want 'email address' to be an optional field if a certain option is selected (a custom user field, radio buttons). For example, if I had a question 'subscribe to newsletter' and they pressed the 'yes' radio button, the email address field would become a required field. If they pressed 'no' the email address field would be optional (and they could complete registration without filling that box in). If this is at all possible please let me know, but if not could I get some assistance with my original question? Thank you.