ALTER TABLE `users` DROP COLUMN IF EXISTS `mailing_list_id`;
DROP TABLE IF EXISTS `mail_bounces`;
DROP TABLE IF EXISTS `mail_campaign_sent`;
DROP TABLE IF EXISTS `mail_campaigns`;
DROP TABLE IF EXISTS `mail_campaigns_groups`;
DROP TABLE IF EXISTS `mail_groups`;
DROP TABLE IF EXISTS `mail_lists`;
DROP TABLE IF EXISTS `mail_members`;
DROP TABLE IF EXISTS `mail_opens`;
DROP TABLE IF EXISTS `mail_subscriptions`;
DROP TABLE IF EXISTS `mail_unsubscribes`;
