nota questo:

codice:
// multiple recipients
$to  = 'aidan@example.com' . ', '; // note the comma
$to .= 'wez@example.com';

// ....
// ....

$headers .= 'To: Mary <mary@example.com>, Kelly <kelly@example.com>' . "\r\n";

// ....
// ....

// Mail it
mail($to, $subject, $message, $headers);