Prova così:
Codice PHP:
<?php
$recipient = "lamiaemail@yahoo.it";
$subject = "Contact Form";
$formcontent = "From: $name \n Message: $message";
$mailheader = "From: $email \r\n Reply-To: $email \r\n X-Mailer: PHP/" . phpversion();
mail($recipient, $subject, $formcontent, $mailheader);
?>