Then, you can still message the code to the winner and then the Winner can click confirm once you've Messaged the code, right? It's pretty much still Digital Delivery. :) Fanned and Watching.
You are not allowed to list a Gift Card as Free Shipping and then send the code and pin through email or Listia mail. You received bonus credits for listing with free shipping. If you digitally deliver the code, you are breaking one of the rules that can lead to a suspension of your account "Misusing the site to accumulate credits, feedback, or to otherwise gain an unfair advantage".