Отправка сообщения Битрикс

<?
require($_SERVER["DOCUMENT_ROOT"]."/bitrix/modules/main/include/prolog_before.php");
use Bitrix\Main\Mail\Event,
	Bitrix\Main\Application,
	\Bitrix\Main\Loader;
	
Loader::includeModule("iblock");

$request = Application::getInstance()->getContext()->getRequest();

$arProperties = array(
	"NAME" => $request->getPost("name"),
	"PHONE" => $request->getPost("phone"),
	"MAIL" => $request->getPost("mail"),
	"PAGE" => $request->getPost("page"),
	"VIEW" => $request->getPost("view"),
);
$files = $request->getFile("file");

if (!empty($files)) {
	foreach ($files['name'] as $fkey => $name) {
		$key = "n" . $fkey;
		$arProperties['FILES'][$key] = array(
			"VALUE" => array (
				"name" => $files['name'][$fkey],
				"size" => $files['size'][$fkey],
				"tmp_name" => $files['tmp_name'][$fkey],
				"type" => $files['type'][$fkey]
			)
		);
	}
}

$arFields = array(
	"IBLOCK_ID" => FEEDBACK_IBLOCK_ID,
	"NAME" => "заявка от " . date("d.m.Y H:i:s"),
	"PROPERTY_VALUES" => $arProperties,
	"PREVIEW_TEXT" => $request->getPost("text")
);

$objElement = new CIBlockElement;
if ($element = $objElement->Add($arFields)) {
	if (!empty($files)) {
		unset($arFields['FILES']);
		$resElement = CIblockElement::GetList(array(), array('IBLOCK_ID' => FEEDBACK_IBLOCK_ID, 'ID' => $element), false, false, array());
		$obElement = $resElement->GetNextElement();
		$arElement = $obElement->GetFields();
		$arElement['PROPERTIES'] = $obElement->GetProperties();
		
		foreach ($arElement['PROPERTIES']['FILES']['VALUE'] as $file) {
			$arFields['FILES'][] = FULL_SITE_URL . CFile::GetPath($file);
		}
	}
	echo 'success';
	
} else {
	echo $objElement->LAST_ERROR;
}

// отправим письмо
foreach ($arProperties as &$arProperty) {
	if (is_array($arProperty))
		$arProperty = implode(", ", $arProperty);
}
$arProperties['TEXT'] = $arFields['PREVIEW_TEXT'];
Event::send(array(
    "EVENT_NAME" => "CALLBACK",
    "LID" => "s1",
    "C_FIELDS" => $arProperties,
));

require($_SERVER["DOCUMENT_ROOT"]."/bitrix/modules/main/include/epilog_after.php");