Free tools
Free tools for fighting fake signups.
No account needed. Built on the same signals as the BurnGuard API.
AI free-tier abuse cost calculator
Estimate how many dollars of inference fake accounts burn every month, and what gating would save.
Email alias checker
Paste signups and find the Gmail dot and +tag aliases that are secretly the same person.
Disposable email checker
Check whether an address uses a throwaway inbox, has a working mail server, or hides an alias.
Signup risk test
Score an email and IP the way the BurnGuard API does, with readable reasons.
Find out how many of your signups are fake.
Install in monitor mode today. Look at the numbers in a week.