[{'role': 'user', 'content': "Analyze the following clause from a privacy policy and determine if it's fair or unfair. Also identify any privacy practices mentioned: E-mail Communications: To help us make e-mails more useful and interesting, we often receive a confirmation when you open e-mail from Amazon.com if your computer supports such capabilities. We also compare our customer list to lists received from other companies, in an effort to avoid sending unnecessary messages to our customers. If you do not want to receive e-mail or other mail from us, please adjust your Customer Communication Preferences ."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]