disable emails for updates

@@ -8,12 +8,21 @@
 // Exit if accessed directly.
 defined( 'ABSPATH' ) || exit;
 
-add_filter( 'auto_core_update_send_email', '__return_false' );
+
 add_filter( 'auto_update_plugin', '__return_false' );
 add_filter('pre_site_transient_update_plugins','remove_core_updates');
 add_filter( 'auto_update_theme', '__return_false' );
 add_filter('pre_site_transient_update_themes','remove_core_updates'); 
 
+add_filter( 'auto_core_update_send_email', 'smartwp_disable_core_update_emails', 10, 4 );
+function smartwp_disable_core_update_emails( $send, $type, $core_update, $result ) {
+  if ( !empty($type) && $type == 'success' ) {
+    return false;
+  }
+  
+  return true;
+}
+
 
 /**
  * Removes the parent themes stylesheet and scripts from inc/enqueue.php