Campus will track the Opens and Clicks of your marketing emails.
How To Enable Tracking
You can turn email tracking on in step 2 of the Send a Campaign wizard by ticking the two tracking checkboxes.
Viewing Your Tracking
Once your campaign is sent you'll be able to view the tracking in the campaign page. Head on over to the Campaigns page (Marketing -> Reporting).
Then find the Campaign you want to view the tracking for and click on it's name and you'll be take to it's tracking statistics page.