For the HubSpot COS Blog platform:
- Navigate to Contacts > Contacts Home > search for the Contact by name or email address
- Click their name to view their full Contact profile and click Properties on the left-hand side of the page
- Search for the word "blog" in the upper right-hand corner of the page and find the blog the person should be unsubscribed from
- Click on the field for "[Your Blog Name] Blog Email Subscription" and change the frequency. Change it to blank to unsubscribe them completely.
- Click the blue checkbox that will appear next to the field to save
- In about 15-20 minutes, the subscriber will be removed from the frequency Smart List that appears under Contacts > Lists