<?php
require_once "Mail.php";
$recipients = "your@email.com";
$from = "YOUR NAME <".$recipients.">";
$to = "YOUR MAIL <".$recipients.">";
if ($argv[1])
$subject = "Error - server down!";
else
$subject = "Server's up!";
$body = " ";
$host = "smtp.gmail.com"; //or your SMTP provider
$username = $recipients;
$password = "YOURPASSWORD";

$headers = array ('From' => $from,
  'To' => $to,
  'Subject' => $subject);
$smtp = Mail::factory('smtp',
  array ('host' => $host,
    'auth' => true,
    'username' => $username,
    'password' => $password));

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

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