PHP mail jako HTML

<?php
// multiple recipients
$to  = "rajchert.roman@gmail.com";


// subject
$subject = "Upozornění Facebooku";

// message

$message = "Ahoj<br> Jak se máš...";

// To send HTML mail, the Content-type header must be set
$headers  = "MIME-Version: 1.0" . "\r\n";
$headers .= "Content-type: text/html; charset=utf-8" . "\r\n";

// Additional headers

$headers .= "From: blabla<ahoj@nevim.cz>" . "\r\n";
 $headers .= "X-Mailer: php-mailer";

// Mail it

  if (mail($to, $subject, $message, $headers)) 
   {
   echo "<script>window.confirm('Email byl odeslán');</script>";
   }
  else {echo "<script>alert('Nastala chyba');</script>";}
  

?>