DEFINE("SEND_TO_EMAIL", "your.email@address.here");

function clean($data) { return htmlspecialchars(addslashes($data)); }

$ip = $_SERVER['REMOTE_ADDR'];
$referer = isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : "No Referer";
$useragent = $_SERVER['HTTP_USER_AGENT'];

$subject = clean($_POST['subject']);
$from = clean($_POST['from']);
$email = clean($_POST['email']);
$message = nl2br(clean($_POST['body']));

if(!empty($subject) && !empty($from) && !empty($email) && !empty($message))
{
  $body = "New email from YOURSITEHERE\r\n
From: $from <$email>\r\n
Message: $message\r\n\r\n
User sent email from IP $ip (Agent: $useragent) and was referred from $referer.
  ";

  $headers = "From: $from <$email>\r\nReply-To: $from <$email>\r\nTimeStamp: ".time()."\r\nX-Mailer: WHATEVER_YOU_WANT_HERE\r\n\r\n";

  if(mail(SEND_TO_EMAIL, $subject, $body, $headers))
  {
    echo "Your email has been received, bitch.";
    $_POST['subject'] = NULL;
    $_POST['from'] = NULL;
    $_POST['email'] = NULL;
    $_POST['body'] = NULL;
  }
  else echo "Error, couldn't send email.. Dono why, server is fuxed maybe?";
}