How do we include Zoom "Join Webinar" link in confirmation emails from Eloqua?

We use Zoom for our company’s webinars. We are really interested to be able to use the Zoom Webinar app in Eloqua to enable us to do our own email marketing for confirmation, reminder, and invite emails - essentially replacing the Zoom emails. We have been testing this functionality and ran into one major hurdle.  

 When sending a confirmation email, we need to include the "Join Webinar" link so the registrant knows how and where to join the webinar on its start date. The issue we run into, however, is that the "Join Webinar" link is unique to an email address (likely generated once a registrant signs up for the webinar). How can we include this in our confirmation emails?