Contact DND Leave a Comment / Automation / By Help Desk “Contact DND” runs when a contact’s DND flag is updated. DND also known as “Do Not Disturb” can be enabled when a customer is no longer interested in a service and requests to opt out. Add Filters DND Flag Is When you click on “DND flag is”, you can either enable or disable a contact’s DND. Enabling the customer’s DND will automatically restrict any communications to this customer. Disabling the DND will grant access to send communications to the customer.