PrestaShop - Deaktivace emailu po zadání tracking čísla

if (@Mail::Send((int)$order->id_lang, 'in_transit', Mail::l('Package in transit', (int)$order->id_lang), $templateVars,
    $customer->email, $customer->firstname.' '.$customer->lastname, null, null, null, null,
    _PS_MAIL_DIR_, true, (int)$order->id_shop)) {
    Hook::exec('actionAdminOrdersTrackingNumberUpdate', array('order' => $order, 'customer' => $customer, 'carrier' => $carrier), null, false, true, false, $order->id_shop);
    Tools::redirectAdmin(self::$currentIndex.'&id_order='.$order->id.'&vieworder&conf=4&token='.$this->token);
} else {
    $this->errors[] = Tools::displayError('An error occurred while sending an email to the customer.');
}