php mailer

<?php
$list = file('list.txt');

foreach ($list as $line) {

$info = explode(",", $line);
$email = $info[0];
$firstname = $info[1];
$lastnameraw = $info[2];
$lastname = str_replace("\r\n","",$lastnameraw);
$fullname = "$firstname $lastname";

$fromemail = "";
$fromname = "";
$replyto = "";

$header = "From: $fromname <$fromemail>\r\nReply-To: $replyto\r\n";
$header .= "MIME-Version: 1.0\r\n";
$header .= "Content-Type: text/html\r\n";
$header .= "Content-Transfer-Encoding: 8bit\r\n\r\n";
$header .= "$message\r\n";

$subject = "";
$message = "";

mail($email, $subject, "", $header);
}
?>