Formulario contacto PHP redireccionamiento

Amigos por favor, necesito su ayuda, tengo un problema hace un par de dias que no logro resolver. Tengo un formulario php de contacto, que cuando se envia me indica un mensaje que ya defini, lo que necesito, es que luego de enviar el formulario, me indique que fue enviado y me redireccione a la pagina de inicio de mi web y NO PUEDOOOO, !!! por favor AYUDENMEEEEEEE

pego las lineas para ver si me pueden guiar por favor

<title>Contacto | GHELS</title>

<?php

if(!$_POST) exit;

// Email address verification, do not edit.
function isEmail($email) {
return(preg_match("/^[-_.[:alnum:]]+@((([[:alnum:]]|[[:alnum:]][[:alnum:]-]*[[:alnum:]])\.)+(ad|ae|aero|af|ag|ai|al|am|an|ao|aq|ar|arpa|as|at|au|aw|az|ba|bb|bd|be|bf|bg|bh|bi|biz|bj|bm|bn|bo|br|bs|bt|bv|bw|by|bz|ca|cc|cd|cf|cg|ch|ci|ck|cl|cm|cn|co|com|coop|cr|cs|cu|cv|cx|cy|cz|de|dj|dk|dm|do|dz|ec|edu|ee|eg|eh|er|es|et|eu|fi|fj|fk|fm|fo|fr|ga|gb|gd|ge|gf|gh|gi|gl|gm|gn|gov|gp|gq|gr|gs|gt|gu|gw|gy|hk|hm|hn|hr|ht|hu|id|ie|il|in|info|int|io|iq|ir|is|it|jm|jo|jp|ke|kg|kh|ki|km|kn|kp|kr|kw|ky|kz|la|lb|lc|li|lk|lr|ls|lt|lu|lv|ly|ma|mc|md|me|mg|mh|mil|mk|ml|mm|mn|mo|mp|mq|mr|ms|mt|mu|museum|mv|mw|mx|my|mz|na|name|nc|ne|net|nf|ng|ni|nl|no|np|nr|nt|nu|nz|om|org|pa|pe|pf|pg|ph|pk|pl|pm|pn|pr|pro|ps|pt|pw|py|qa|re|ro|ru|rw|sa|sb|sc|sd|se|sg|sh|si|sj|sk|sl|sm|sn|so|sr|st|su|sv|sy|sz|tc|td|tf|tg|th|tj|tk|tm|tn|to|tp|tr|tt|tv|tw|tz|ua|ug|uk|um|us|uy|uz|va|vc|ve|vg|vi|vn|vu|wf|ws|ye|yt|yu|za|zm|zw)$|(([0-9][0-9]?|[0-1][0-9][0-9]|[2][0-4][0-9]|[2][5][0-5])\.){3}([0-9][0-9]?|[0-1][0-9][0-9]|[2][0-4][0-9]|[2][5][0-5]))$/i",$email));
}

if (!defined("PHP_EOL")) define("PHP_EOL", "\r\n");

$name = $_POST['name'];
$email = $_POST['email'];
$phone = $_POST['phone'];
$subject = $_POST['subject'];
$comments = $_POST['comments'];
$verify = $_POST['verify'];

if(trim($name) == '') {
echo '<div class="error_message">Por favor, ingrese su nombre.</div>';
exit();
} else if(trim($email) == '') {
echo '<div class="error_message">Por favor, ingrese un correo valido.</div>';
exit();
} else if(trim($phone) == '') {
echo '<div class="error_message">Por favor ingrese un numero valido .</div>';
exit();
} else if(!is_numeric($phone)) {
echo '<div class="error_message">Los numeros telefonicos solo pueden contener numeros.</div>';
exit();
} else if(!isEmail($email)) {
echo '<div class="error_message">Ha ingresado un correo electronico invalido, por favor, intentelo denuevo.</div>';
exit();
}

if(trim($subject) == '') {
echo '<div class="error_message">Por favor, seleccione un asunto.</div>';
exit();
} else if(trim($comments) == '') {
echo '<div class="error_message">Ingrese su mensaje.</div>';
exit();

}

if(get_magic_quotes_gpc()) {
$comments = stripslashes($comments);
}


// Configuration option.
// Enter the email address that you want to emails to be sent to.
// Example $address = "joe.doe@yourdomain.com";

//$address = "example@themeforest.net";
$address = "contacto@ghels.cl";


// Configuration option.
// i.e. The standard subject will appear as, "You've been contacted by John Doe."

// Example, $e_subject = '$name . ' has contacted you via Your Website.';

$e_subject = 'Nuevo mensaje web desde ghels.cl ' . $name . '.';


// Configuration option.
// You can change this if you feel that you need to.
// Developers, you may wish to add more fields to the form, in which case you must be sure to add them here.

$e_body = "You have been contacted by $name with regards to $subject, their additional message is as follows." . PHP_EOL . PHP_EOL;
$e_content = "\"$comments\"" . PHP_EOL . PHP_EOL;
$e_reply = "You can contact $name via email, $email or via phone $phone";

$msg = wordwrap( $e_body . $e_content . $e_reply, 70 );

$headers = "From: $email" . PHP_EOL;
$headers .= "Reply-To: $email" . PHP_EOL;
$headers .= "MIME-Version: 1.0" . PHP_EOL;
$headers .= "Content-type: text/plain; charset=utf-8" . PHP_EOL;
$headers .= "Content-Transfer-Encoding: quoted-printable" . PHP_EOL;

if(mail($address, $e_subject, $msg, $headers)) {

// Email has sent successfully, echo a success page.

echo "<fieldset>";
echo "<div id='success_page'>";
echo "<h1>Mensaje enviado correctamente.</h1>";
echo "<p>Muchas gracias,<strong>$name</strong>, su mensaje ha sido enviado, pronto tendra noticias nuestras. http://ghels.cl/ </p>";
echo "</div>";
echo "</fieldset>";



} else {
}