[{'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: Your Email Preferences: When you register for the Service, you may elect to receive promotional, marketing, or other similar emails tailored to your interests. You have the option to change this election in the Settings section of our Service. For information on how to opt in or out of receiving promotional, marketing, or other similar emails from us, visit https://help.pandora.com."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]