Conflict with Contact Form 7

I’m trying to exclude email of cf7 using the mandrill_payload filter


function excludeddd($message) {
$cf7_tag = 'wp_WPCF7_Mail->compose';
if ( in_array($cf7_tag, $message['tags']['automatic']) ) {
$message['force_native'] = true;
}
return $message;
}
add_filter('mandrill_payload', 'excludeddd');


But it doesn’t help.

https://www.ads-software.com/plugins/wpmandrill/