Apply action when customer opts out of all email marketing

Whenever a customer opts out receiving your marketing emails, you can apply actions to that contact. This is useful if you want to set up a tag on opted-out contacts and alert a user to delete those tagged contacts from your database. 

1. Go to Marketing > Settings
2. Click Email Defaults under Template Settings
3. Click Actions
4. Select the action from the drop-down list
5. 
6. Configure the action
7. Click Save