text: import fastmail
  import requests
  from pymongo import MongoClient
  import os
  
  client = MongoClient(os.environ.get('MONGODB_URI'))
  database = client.heroku_zf4q464k
  posts = database.posts
  
  for post in posts.find():
      latest = requests.get(post['url']).text
      previous = post['content']
  
      posts.update_one({"_id": post['_id']}, {"$set": {'content': latest}})
  
      if latest != previous:
          m = fastmail.FastMailSMTP(os.environ.get('FASTMAIL_USER'), os.environ.get('FASTMAIL_PASSWORD'))
          m.send_message(from_addr='"Site Tracker" <sitetracker@nathansmith.io>',
                         to_addrs=[post['email']],
                         msg="Go check it out!",
                         subject='Hey! ' + post['url'] + ' has been updated!'
                         )
  