new_contents: from gratipay import wireup
  
  env = wireup.env()
  db = wireup.db(env)
  
  participants = []
  
  with open('./sql/emails.txt') as f:
      emails = [line.rstrip() for line in f]
      participants = db.all("""
          SELECT p.*::participants
            FROM participants p
           WHERE email_address IN %s
      """, (tuple(emails), ))
  
  for p in participants:
      p.queue_email('initial')
  
subject: Add script to queue emails from file