While we always recommend checking your Spam/Junk folders, as these e-mails do sometimes mistakenly get filtered into these instead of people's inbox,  it has come to our attention that Google Mail in particular has been known to sometimes sort Steam's registration key e-mails into the "Promotions" tab. If you have Google Mail tabs active, please make sure to check for your Steam key e-mail there. If your Steam key was related to a Kickstarter pledge, also make sure that you are checking the e-mail account connected to the Kickstarter account the pledge was made with. If you can not find it in any of these places, please send us an e-mail at support@nerdkingdom.com (or via the help widget on the site) and we will make sure you receive your key.