code: def main():
      
      description = 'Letter - a commandline interface'
      parser = argparse.ArgumentParser(description=description)
      parser.add_argument('--gmail', action='store_true', help='Send via Gmail', )
      args = parser.parse_args()
  
      to       = raw_input('To address > ')
      subject  = raw_input('Subject > ')
      body     = raw_input('Your Message > ')
  
  
      if args.gmail:
          user = fromaddr = raw_input('Gmail Address > ')
          pw   = getpass.getpass()
          postie = letter.GmailPostman(user=user, pw=pw)
      else:
          postie = letter.Postman() # Unauthorized SMTP, localhost:25
          fromaddr = raw_input('From address > ')
  
      class Message(letter.Letter):
          Postie     = postie
  
          From       = fromaddr
          To         = to
          Subject    = subject
          Body       = body
  
      return 0
docs: Do the things!
  
  
      Return: 0
      Exceptions: