<?php
//Change the following to your email address
$to = "myemail@something.com"; // Your email!
$sitename = "Your Site Name"; // Your site name
$subject = "Googlebot Detected - $sitename";
$msg = "Google has crawled $sitename: " . $_SERVER['REQUEST_URI'];
$mailheaders ="From: Googlebot <googlebot@google.com> \n";

if(eregi("googlebot",$_SERVER['HTTP_USER_AGENT'])) 
{ 
    mail($to, $subject, $msg, $mailheaders);
}
?>