Formal\Form::validateEmail PHP Method

    function validateEmail($sValue, \Formal\Form\Morphology $oMorpho, \Formal\Element $oElement)
    {
        if (\Flake\Util\Tools::validEmail($sValue)) {
            return true;
        }
        return "<strong>" . $oElement->option("label") . "</strong> should be an email.";
    }