How to contact giveaway winner?

Email is shown in winners page, and you can always try adding him on steam
Also they have a week to mark it
If they break the rule and dont activate it you can report them, we dont like rule brekers

https://www.steamgifts.com/about/faq

Usually it's winners that are impatient. You have up to 7 days to send the key to the winner, and they have up to 7 days to mark as received or not received.

After 7 days, you can request a re-roll - it will not be granted before then.

Be patient. There could be any number of reasons why he hasn't marked it received yet. And do you have any evidence he tried to sell the key?

Wow, thank u guys for the positive answers. I will try to contact the winner, however it's cheap but, I just want to make sure every winner got it. coz im new here.

Thanks, Question answered and I will close the thread.

Conclusion:

1. Send the winner e-mail to remind and congratulate them.
2. Take your time and wait for the winner to press received key button within 7 days.
3. Don't try to be impatient reporting a giveaway winner within 7 days without any reason or even speculating that the winner will sell the key.
4. Read the https://www.steamgifts.com/about/faq while you are impatient as it will cure your curiosity and taking your time. All clear.

thank you everyone..