My mail form doesn't send any emails when updating to my address.  Can you help?

<?php
if(isset($_POST['email'])){
$mailTo = "[email protected]";
$subject = "mail from web";
$body = "New message from web
<br><br>
FROM: ".$_POST['email']."<br>
NAME: ".$_POST['name']."<br>
COMMENTS: ".$_POST['message']."<br>";
$headers = "To: Elixir <".$mailTo.">\r\n";
$headers .= "From: ".$_POST['author']." <".$_POST['email'].">\r\n";
$headers .= "Content-Type: text/html";
//envio destinatario
$mail_success =  mail($mailTo, utf8_decode($subject), utf8_decode($body), $headers);
}
?>