From the contact card, you can view when a contact has been subscribed to a particular follow-up campaign and when they have been removed.
- From the side navigation click on CONTACTS.
- Search for and then click on a contact.
- Click the FOLLOW-UP tab from the bottom right.
- From the VIEW option, select to filter by ACTIVE, CANCELLED, or ALL campaigns.
This will show you a list of the campaigns and the date(s) when the contact was added or removed for each.