text: DROP TABLE if exists b_sender_list;
  DROP TABLE if exists b_sender_contact;
  DROP TABLE if exists b_sender_contact_list;
  DROP TABLE if exists b_sender_group;
  DROP TABLE if exists b_sender_group_connector;
  DROP TABLE if exists b_sender_group_counter;
  DROP TABLE if exists b_sender_mailing;
  DROP TABLE if exists b_sender_mailing_chain;
  DROP TABLE if exists b_sender_mailing_chain_group;
  DROP TABLE if exists b_sender_mailing_group;
  DROP TABLE if exists b_sender_mailing_subscription;
  DROP TABLE if exists b_sender_posting;
  DROP TABLE if exists b_sender_posting_recipient;
  DROP TABLE if exists b_sender_posting_read;
  DROP TABLE if exists b_sender_posting_click;
  DROP TABLE if exists b_sender_posting_unsub;
  DROP TABLE if exists b_sender_preset_template;
  DROP TABLE if exists b_sender_mailing_attachment;
  DROP TABLE if exists b_sender_mailing_trigger;
  DROP TABLE if exists b_sender_message;
  DROP TABLE if exists b_sender_message_field;
  DROP TABLE if exists b_sender_call_log;
  DROP TABLE if exists b_sender_agreement;
  DROP TABLE if exists b_sender_abuse;
  DROP TABLE if exists b_sender_counter_daily;
  DROP TABLE if exists b_sender_queue;
  DROP TABLE if exists b_sender_role;
  DROP TABLE if exists b_sender_role_permission;
  DROP TABLE if exists b_sender_role_access;
  DROP TABLE if exists b_sender_counter;
  