Click on Guardians located under My School. Use the gray search bar to search for the specific guardian you wish to view the email subscription status for.
Once you have located the specific guardian entry, click on their name to view their profile. You will want to scroll down the page until you locate the Email History section.
Click on the blue "Click to load email history" button located under Email History.
You will notice the guardian's current email history populate as well as two new fields on the right hand side. These will indicate the current status of the subscription and the available action.
Click on the "action" to update the current status. We can see from the image below that this guardian is now unsubscribed from emails. Click on the action button to re-subscribe them.