require_once "Mail.php";
$username = 'user@gmail.com';
$password = 'password';
$smtpHost = 'ssl://smtp.gmail.com';
$smtpPort = '465';
$to = 'mail@to.com';
$from =  'user@gmail.com';

$subject = 'Contact Form';
$successMessage = 'Message successfully sent!';


$replyTo = '';
$name = '';
$body = '';


$headers = array(
    'From' => $name . " <" . $from . ">",
    'To' => $to,
    'Subject' => $subject
);
$smtp = Mail::factory('smtp', array(
            'host' => $smtpHost,
            'port' => $smtpPort,
            'auth' => true,
            'username' => $username,
            'password' => $password
        ));

$mail = $smtp->send($to, $headers, $body);

if (PEAR::isError($mail)) {
    echo($mail->getMessage());
} else {
    echo($successMessage);
}