дело такое скачал готовый сайт,там есть форма обратной связи но сообщения не отправляются помогите плиз

<?php
/*
OXYLUS Development web framework
copyright © 2002-2008 OXYLUS Development
web: www.oxylus-development.com
mail: www.oxylus@development.com

$Id: name.php,v 0.0.1 dd/mm/yyyy hh:mm:ss oxylus Exp $
description
*/

// dependencies
$url = "http://yoursite.com/" ;

$admin_notify_email = array(
"to" => "koiot831@gmail.com",
"to_name" => "Admin Name",

"from" => "{EMAIL}",
"from_name" => "{NAME}",

"subject" => "You received a new contact message",
"body" => <<<EOD
<p>You have information request from Venice Shipyards SE</p>
<p>
Name: {NAME}<br>
Email: {EMAIL}<br>
Attachment: {ATTACHMENT}
Message <BR>
{MESSAGE}
</p>
EOD
);

$autoresponder_email = array(
"enable" => true,

"to" => "{EMAIL}",
"to_name" => "{NAME}",

"to" => "koiot831@gmail.com",
"from_name" => "Autoresponder",

"subject" => "Thank you for contacting us on Venice Shipyards SE - We send you the requested info. from you before 48 hours...",
"body" => <<<EOD
<p>Thank you for contacting us </p>
<p>on Venice Shipyards SE - We send you the requested info. from you before 48 hours...
Name: {NAME}<br>
Email: {EMAIL}<br>
Message <BR>
{MESSAGE}
</p>
EOD
);


require_once "lib/common.php";
require_once "lib/template.php";

if ($_SERVER["REQUEST_METHOD"] == "POST") {
$vars = array(
"name" => stripslashes($_POST["name"]),
"email" => stripslashes($_POST["email"]),
"subject" => stripslashes($_POST["subject"]),
"message" => nl2br(stripslashes($_POST["message"])),
);


//process the notify email
$email = array(
"email_to" => $admin_notify_email["to"],
"email_to_name" => $admin_notify_email["to_name"],

"email_from" => $admin_notify_email["from"],
"email_from_name" => $admin_notify_email["from_name"],

"email_subject" => $admin_notify_email["subject"],
"email_body" => $admin_notify_email["body"],
"email_type" => "html"
);

foreach ($email as $key => $val) {
$email[$key] = CTemplateStatic::Replace($val , $vars);
}

SendMail($email);

//process the autoresponder email

if ($autoresponder_email["enable"] == true) {
$email = array(
"email_to" => $autoresponder_email["to"],
"email_to_name" => $autoresponder_email["to_name"],

"email_from" => $autoresponder_email["from"],
"email_from_name" => $autoresponder_email["from_name"],

"email_subject" => $autoresponder_email["subject"],
"email_body" => $autoresponder_email["body"],
"email_type" => "html"
);

foreach ($email as $key => $val) {
$email[$key] = CTemplateStatic::Replace($val , $vars);
}

SendMail($email);
}


echo "success=true";
die();

}

echo "success=false";
die();

?>