$headers = "From: testsite <[email protected]>\n";
$headers .= "Cc: testsite <[email protected]>\n";
$headers .= "X-Sender: testsite <[email protected]>\n";
$headers .= 'X-Mailer: PHP/' . phpversion();
$headers .= "X-Priority: 1\n"; // Urgent message!
$headers .= "Return-Path: [email protected]\n"; // Return path for errors
$headers .= "MIME-Version: 1.0\r\n";
$headers .= "Content-Type: text/html; charset=iso-8859-1\n";