Performs a SetHITTypeNotification operation to set email
        notification for a specified HIT type

def set_email_notification(self, hit_type, email, event_types=None):
        """
        Performs a SetHITTypeNotification operation to set email
        notification for a specified HIT type
        """
        return self._set_notification(hit_type, 'Email', email, event_types)