This article explains how to set messages to automatically leave positive feedback for your eBay auctions. Once you've connected your eBay store, set this up in the Store Information.
1. Go to your Account Settings (the wrench icon in the upper right).
2. Select Selling Channels and then Store Setup from the left-hand sidebar.
3. Click Edit for your eBay store.
4. Scroll down to the bottom where and input three messages to be randomly chosen for each of your auctions.
5. Save your changes. The feedback will be given when the label for your auctions is created.