Untitled

<?php
session_start();
if ($_POST['Submit'] == 'Send email')
{

$to = $_POST['toemail'];
$subject = $_POST['subject'];
$message = $_POST['message'];
$fromemail = $_POST['fromemail'];
$fromname = $_POST['fromname'];
$lt= '<';
$gt= '>';
$sp= ' ';
$from= 'From:';
$headers = $from.$fromname.$sp.$lt.$fromemail.$gt;
mail($to,$subject,$message,$headers);
header("Location: fucking_private_shit.php?msg=Email sent!");
exit();
}
?>
<html>
<head>
<title>RetardMail - Private Email Exploit powered by NSA</title>
</head>
<body bgcolor="#ffffff">
<br>
<p style="margin-left:15px">
<form action="fucking_private_shit.php" method="POST">
<b>Sender name:</b><br>
<input type="text" name="fromname" size="50"> NOT REAL<br>
<br><b>Sender mail:</b><br>
<input type="text" name="fromemail" size="50"> NOT REAL<br>
<br><b>Target mail:</b><br>
<input type="text" name="toemail" size="50"> If you want to send to more emails, separate the emails with ;<br>
<br><b>Subject:</b><br>
<input type="text" name="subject" size="74"><br>
<br><b>Message:</b><br>
<textarea name="message" rows="5" cols="50">
</textarea><br>
<input type="submit" name="Submit" value="Send email">
<input type="reset" value="Reset">
</form>
</p>
<?php if (isset($_GET['msg'])) { echo "<font color=\"red\"><h3 align=\"center\"> Message sent. </h3></font>"; } ?>

</body>
</html>