Subscription Tracking within SendGrid is a setting that can be enabled that allows configured unsubscribe content to be added at the bottom of sent emails. For example, "If you'd like to unsubscribe and stop receiving these emails here." For more details on Subscription Tracking, see SendGrid's documentation Tracking.
If you'd like this setting enabled or disabled, please reach out to Punchh Support.
If further assistance is required, submit a ticket to Punchh Support. (For help submitting a ticket, click here)