You can see the date a contact unsubscribed from email communication from the contact's record. Follow the steps below to find this information:
- In your HubSpot Marketing account, navigate to Contacts > All Contacts.
- Click on the contact's name.
- In the About section, click View property history.
- Search for opted out to view the history for all of the opt-out email properties. The date that appears in the Made on column when the value was updated to true on any of these properties indicates when the contact opted out of that particular email type or all types (Opted out of all email).