new_contents: #!/usr/bin/env python
  import re
  import sys
  
  
  def chunk(l,n):
      return (l[i:i+n] for i in xrange(0, len(l), n))
  
  
  def is_disposable_email(email):
      emails = [line.strip() for line in open('domain-list.txt')]
      
      """
      Chunk it!
      Regex parser doesn't deal with hundreds of groups
      """
      for email_group in chunk(emails, 20):
          regex = "(.*" + ")|(.*".join(email_group) + ")"
          if re.match(regex, email):
              return True
      
      return False
      
  
  if __name__ == "__main__":
      if len(sys.argv) < 2:
          sys.stderr.write("You must supply at least 1 email\n")
      
      for email in sys.argv[1:]:
          if is_disposable_email(email):
              sys.stderr.write("{email} appears to be a disposable address\n".format(email=email))
subject: Add basic email checking