$to      = "my-email@webhost.com";
$subject = "the subject";

$message = "Hi;

$headers = array("From: email@gmail.com","Reply-To: email@gmail.com","Cc: email@yahoo.com,email@gmail.com","X-Mailer: PHP/" . phpversion());

$headers = implode("rn", $headers);

echo (mail($to, $subject, $message, $headers)) ? 'Message sent!' : 'Message not sent!';