How does Unsubscribe to the notification works, when user clicks on Unsubscribe link in the notificationIssue Some Notifications are created with links to unsubscribe. The link is generally visible at the bottom of the notification email. Users click on Unsubscribe link if they don't want to receive a particular notification.Resolution1. The Unsubscribe link which you use, is a Macro, it sends a unsubscribe email to the ServiceNow instance. 2. Name of such OOTB macro is - ${NOTIF_UNSUB}. 3. When the user clicks on Unsubscribe link, it triggers this macro and it sends an email to the instance with the Subject line starting with Unsubscribe from. 4. The Email gets categorized as New email and triggers inbound action - Unsubscribe from Notification. 5. This Inbound action updates entry on the table - cmn_notif_message table. More to know about cmn_notif_message table - a. Notification Subscriptions of the user are stored on the cmn_notif_message table. b. When a user is sent a subscribable notification for the first time, an entry is created in the cmn_notif_message table. if multiple users subscribed to the same email notification then there will be one record created for each user for this email notification in this table. c. When the user unsubscribes the notification a record for the user for the notification is updated the value of the field Filter gets changed to Unsubscribe.