[{'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: Opt-out. Each marketing email communication we send you will contain instructions permitting you to "opt-out" of receiving future marketing communications. You may also contact us as indicated below to have your name deleted from our email mailing lists, or you may update your communication preferences in your account settings on our website. Please note, however, that certain communications, such as push notifications, require you to change the settings on your device if you wish not to receive any future communications. In addition, on occasion we may send service-related announcements, such as disruption notifications, via email and you may not be able to opt-out of these communications.'}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]