code: def get_content_type(self, msg, content_type="HTML"):
          
          if "HTML" in content_type.upper():
              content_type = self.HTML
          elif "PLAIN" in content_type.upper():
              content_type = self.PLAIN
  
          for part in msg.walk():
              if str(part.get_content_type()) == content_type:
                  return str(part.get_payload(decode=True))
docs: Given an Email.Message object, gets the content-type payload
          as specified by @content_type. This is the actual body of the
          email.
          @Params
          msg - Email.Message object to get message content for
          content_type - Type of content to get from the email
          @Return
          String content of the email in the given type