If you no longer want to receive specific/ all correspondence from SFS you can change your email/ SMS settings or unsubscribe all together via your SFS profile.
How to change your email/ SMS settings or unsubscribe from SFS:
Click the accounts tab
Here you will see your notification settings where you can amend accordingly.
Scroll to the bottom of the account preference page and click the save preference button to update your new notification settings.
Should you choose to unsubscribe, but at a later date decide you would like to re-subscribe simply login back into your SFS profile and follow the same guidelines above.