How To Get Interface Descriptions In Notification Emails

I want to be able to see interface descriptions in my email alerts and I did not see any reference to those in the /evt or /evt summary variables.  Is there another way to reference those and add them to the email template for notifications?  It's very useful to see since most of our interfaces have descriptions and on a router or switch with over 500 interfaces, knowing which one is having an issue is key.

Thanks!