-- settings

DELETE FROM `top`, `toc`, `to` USING `sys_options_types` AS `top` LEFT JOIN `sys_options_categories` AS `toc` ON `top`.`id`=`toc`.`type_id` LEFT JOIN `sys_options` AS `to` ON `toc`.`id`=`to`.`category_id` WHERE `top`.`name` = 'bx_smtp';

-- logs

DELETE FROM `sys_objects_logs` WHERE `object` = 'bx_smtp_mailer';

-- alerts

SET @iHandler := (SELECT `id` FROM `sys_alerts_handlers` WHERE `name` = 'bx_smtp' LIMIT 1);
DELETE FROM `sys_alerts` WHERE `handler_id` = @iHandler;
DELETE FROM `sys_alerts_handlers` WHERE `id` = @iHandler;