[{'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: 11. Communications Preferences and Access You may choose to receive promotional emails, newsletters, push notifications, and similar communications from us. You may opt out of receiving commercial emails from us by clicking on the opt-out or "unsubscribe" link included in the commercial e-mails you receive. You may opt out of receiving push notifications by turning off push notifications at the device level. Please note that opt-out requests may take some time to be effective. Your opt-out request will not apply to messages that you request or that are not commercial in nature. For example, we may contact you concerning any purchases you have made with us, even if you opt out of receiving unsolicited commercial email messages.'}, {'role': 'assistant', 'content': 'This clause is unfair. The privacy practices mentioned are: Contact_E_Mail_Address_1stParty.'}]