Return the value entered for the first field of type
        ``forms.EmailField``.

def email_to(self):
        """
        Return the value entered for the first field of type
        ``forms.EmailField``.
        """
        for field in self.form_fields:
            if issubclass(fields.CLASSES[field.field_type], forms.EmailField):
                return self.cleaned_data["field_%s" % field.id]
        return None