It's easy! Connect your InfusionSoft account to your giveaway by getting your InfusionSoft account's App ID and API Key by following these simple steps:
1) App ID:
This is the subdomain you access your admin panel with. For instance, if your admin panel is located at:
Then your app id is "ab123"
2) API Key
This can be found by following these instructions: http://ug.infusionsoft.com/article/AA-00442
After entering your "App ID" and "API Key", you should then be able to click the "Validate Credentials" button.
A dropdown will appear with your InfusionSoft tags. Choose the tag that you would like to be applied to entrants who choose to subscribe to your email list.
NOTE: you might want to create a "Rafflecopter" specific tag in your InfusionSoft admin panel before setting up your giveaway.