When you delete a contact, they're moved to the recycle bin for 30 days. After 30 days, all their information stored in contact data fields and Insight data is permanently removed.
Before you start
Required permissions
To use this feature, you must be an account owner or have the following user permission:
Contacts
Learn more about user permissions.
Delete a single contact
Go to Audience > Contacts.
Find and select the contact you want to delete.
On the Single customer view, expand the CONTACT ACTIONS drop-down menu.
Select Delete this contact.
Read the delete confirmation information, and select the confirmation check boxes.
Select DELETE.
The contact is moved to the recycle bin and is permanently deleted after 30 days.