-- Revert changes to letter_outgoing_recipients table
ALTER TABLE letter_outgoing_recipients 
DROP COLUMN IF EXISTS user_id,
DROP COLUMN IF EXISTS department_id,
DROP COLUMN IF EXISTS status,
DROP COLUMN IF EXISTS read_at,
DROP COLUMN IF EXISTS flag,
DROP COLUMN IF EXISTS is_archived;

-- Drop indexes
DROP INDEX IF EXISTS idx_letter_outgoing_recipients_user;
DROP INDEX IF EXISTS idx_letter_outgoing_recipients_department;
DROP INDEX IF EXISTS idx_letter_outgoing_recipients_status;
DROP INDEX IF EXISTS idx_letter_outgoing_recipients_archived;