[{'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: Promotional Communications If you sign on to the Wi-Fi Service as a non-subscriber to XFINITY Internet or if you are not a Performance Tier or above XFINITY Internet subscriber, Comcast may ask for your email address and home zip code. We will use the email address you provide when you sign in to send you service messages and we may send you promotional messages regarding XFINITY products or services you might be interested in based on the zip code you provide. Any promotional email that we send will include a way to opt out of receiving additional messages. If you sign in to the Wi-Fi Service again, you might receive an additional message, which again will include an opt-out link. If you have otherwise provided your email address to Comcast, or Comcast has already obtained your email from another source, then Comcast may already be sending you promotional emails about our products and services. You may contact Comcast at 1-800-COMCAST to ask us to put your name on our internal company "do not mail" list so that you do not receive marketing or promotional postal mail from us. In addition, you may choose to opt out of promotional emails about Comcast\'s products and services by going to the web page located at www.comcast.com/preferences and following the instructions there.'}, {'role': 'assistant', 'content': 'This clause is unfair. The privacy practices mentioned are: Contact_E_Mail_Address_1stParty, Contact_ZIP_1stParty.'}]