Temp Mail Blocked on Steam?
Temp Mail domains are blocked on Steam. Here's why and what you can do instead.
Why It's Blocked
Steam blocks Temp Mail domains to prevent abuse of game giveaways, trading card farming, and Steam Community Market manipulation. Temp Mail's domains are tracked by commercial blocklist services that Steam subscribes to. Additionally, Steam Guard (two-factor authentication) requires ongoing email access for login codes, making temporary email addresses impractical for maintaining a functional Steam account.
What You Can Do
For Steam, you need a disposable service that provides longer-term inbox access. NukeMail offers 24 hours of active access — enough time to complete signup and receive initial Steam Guard codes. Its domains aren't on Steam's blocklist, and the access code system lets you return to check emails from any device.
Steam accounts tend to accumulate value over time through game purchases, achievements, and inventory items. If you plan to actually use the account, a dedicated ProtonMail or Tutanota address is worth the extra minute of setup. You'll need ongoing email access for Steam Guard codes and purchase confirmations.
Game developers and QA teams who need multiple accounts should look into Valve's Steamworks partner program, which provides official tools for test account management.