After you participate in a few of these events you will begin receiving a lot of email and even though it may be tempting to opt-out of these lists, you mailing list don't want to be too quick to unsubscribe. Keep in mind that you are trying to learn how to get the best results by using giveaway events, so it is important that you study the techniques that other marketers are using.
I recommend setting up a folder on your desktop and keeping track of the products and emails that have the most impact on you. You will notice that the more experienced marketers will send you a number of emails, thanking you, offering you mailing list additional free gifts. They will then try to entice you into their sales funnel with a good low cost offer. These are the people that you need to keep a close eye on, because they are proficient at converting subscribers from these types of events in to paying customers.
Every giveaway is a little bit different, however they almost all run based on the same basic principle, so once you become familiar mailing list with one, you'll have no trouble with any others. After your first couple of events you will be able to develop your own process for creating and submitting gifts, which will make it easier for you to improve your results over time.