Here are the steps you can follow to get this done. 

  • Go to the subscription details page and hit  "Change Customer Details"(on the right panel)Screenshot below.

                                  

  • Remove/modify the email address and click "Update Customer".  (This is to ensure no email notifications are sent for that subscription).
  • After you perform the operation, make sure to update the actual email address. 


Note: This process is applicable to V1 & V2 email notifications.