Send email php to many people

1

As I can send he himself email to several people. Please … thanksss


<?
header("Pragma: no-cache");
header("Cache-Control: no-cache, must-revalidate");

if ($REMOTE_ADDR == "") $ip = "no ip";
else $ip = getHostByAddr($REMOTE_ADDR);

if(isset($_POST['Submit'])){
    $to = "miemail@hotmail.com";    
    $to2 = $_POST['email'];                
    $from2 = "miemail@hotmail.com";    
    $subject2 = "Confirmación";
    $body2 = "Gracias";
    $subject = "Contacto: " . $_POST['nome'];
    $body = "     Nombre: " . $_POST['nome'] .  "
";
    $body .= "     E-mail: $to2".  "
";
    $body .= "     Teléfono: " . $_POST['telefono'] . "
";
    $body .= "     Población: " . $_POST['poblacion'] . "
";
    $body .= "                ". "
";
    $body .= "     Mensaje: " ."
";
    $body .= "     --------------------------------------". "
";
    $body .= "     " . $_POST['message_txt'] . "

";
    

    if (@mail($to, $subject,$extraInfo . $body, "From: $email
X-Mailer: PHP/" . phpversion())){
        if($_POST['desideri'] == "true"){
            mail($to2, $subject2,$extraInfo . $body2, "Return-Path: <miemail@hotmail.com>
" . "From: $from2
" . "Reply-to: miemail@hotmail.com
" . "X-Mailer: PHP/" . phpversion());
        }
        
        echo "Atención=" . urlencode("Email ha sido enviado");
    } else {
        
        echo "Atención=" . urlencode("Se han producido errores");
    }
}
?>