How to create giveaways for indiegala.com gift links (Steam redeemable)?

After giveaway ends you can send the game via e-mail :)
I don't know why only HB links are allowed on the key list ...

not sure if it has to do with many free game giveaways coming from indiegala. so to much hassle i think and i prefer it to keep it this way myself but thats my opinion

Once GA ends, you can add link on the page, where you have winner listed. It says add key, but you can paste link there and click save. That's what I did to mine few times

Why don't you add directly the key? If you click the gift link and enter your email you get the key which then you can use for your GA.

In the future, don't use Indie Gala gift links, just reveal it directly as a key. It'll save you the trouble of emailing or adding on Steam or whatever if you prefer sending keys through Steam Gifts. It used to be necessary because of the way it would automatically redeem to your account, but now that Valve's axed OAuth you get plain old keys.