Phalcon\Mailer\Message::normalizeEmail PHP Method

    protected function normalizeEmail($email)
    {
        if (is_array($email)) {
            $emails = [];
            foreach ($email as $k => $v) {
                if (is_int($k)) {
                    $emails[$k] = $this->getManager()->normalizeEmail($v);
                } else {
                    $k = $this->getManager()->normalizeEmail($k);
                    $emails[$k] = $v;
                }
            }
            return $emails;
        } else {
            return $this->getManager()->normalizeEmail($email);
        }
    }