If you haven’t already, you will need to create an online account before being able to change the settings for marketing email communications.
Once signed into you online account profile, expand the profile menu in the top right hand corner of the screen and select Email Notifications.
Use the Setting toggles to turn the marketing email communication On or Off for each type of marketing email.
Note: This change only stops marketing related communication; you will continue to receive email communications related to your accounts, products, and billing notification
UPDATED: 25 July 2019