Overview
In the maker's words.
IsTempMail is a real-time API that detects disposable, temporary, and throwaway email addresses at signup — so you can block fake users before they reach your database. It's backed by a 130,000+ domain blocklist updated multiple times daily, and returns clear blocked and unresolvable fields you can act on instantly.
Control AI spend
Stop abusers from minting trial accounts that burn GPU minutes, API credits, and generation quotas
Stop free-trial abuse
Keep paid features paid; protect unit economics
Protect deliverability
Fewer bounces, better sender reputation
Clean metrics
Honest activation, conversion, and retention numbers
Cut fraud signals
Block fake signups before they pollute your funnel
Stack
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Screenshots
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Milestones
What the maker has shipped since launch, newest first.
Feedback
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