By default, admin notifications will be sent to all adminstrators. However, in case you have many adminstrators on your site, you may want to customize the list of recipients. This code snippet will allow you to do that.
/**
* Custom admin notifications recipients
*
* @param $recipients array Actual list of recipients that will receive admin notifications
*
* @return int[] admin recipients IDs
*/
function wpca_customize_admin_notifications_recipients($recipients) {
// This line will add new recipient to the list, with user ID 8, which will receive all admin notifications
$recipients[] = 8;
return $recipients;
}
add_filter('cuar/notifications/administrator-recipient-ids', 'wpca_customize_admin_notifications_recipients');