Well I Found the way to do the first point:
in /includes/functions.php I add this:
add_action( 'wpcf7_before_send_mail', 'correo_usuarios' );
function correo_usuarios($cf7) {
$exportar = "";
$exportar .= "\n" . $_POST['your-email'] ;
file_put_contents("/infor/cf7.txt", $exportar, FILE_APPEND);
}
I have to make the infor root, and every time I get an email the sender′s address records in the file.
The secont point will have it soon.