Code-Snippets-Functions/Execute a function on a child site/WordPress/disable-email-notification-core-updates.txt

add_filter( 'auto_core_update_send_email', 'wpb_stop_auto_update_emails', 10, 4 );
  
function wpb_stop_update_emails( $send, $type, $core_update, $result ) {
if ( ! empty( $type ) && $type == 'success' ) {
return false;
}
return true;
}