Free tool
Spam domain checker
Check whether a domain is flagged for spam, phishing, or disposable abuse.
Free · No signup · Uses Piisend public API with Turnstile
Phishing and scam domains are used to harvest credentials and abuse signup flows. Piisend blocks known phishing domains when customers add sending domains and at account signup.
This checker surfaces the same phishing and disposable signals so you can evaluate risk before accepting a domain or email.
For developers
Call the Intelligence API from your backend with a Piisend API key. No Turnstile token needed — Turnstile is only for this browser checker. See integration guides.
curl -X POST https://api.piisend.com/api/v1/intelligence/spam-domain \
-H "Authorization: Bearer pii_live_..." \
-H "Content-Type: application/json" \
-d '{"domain":"example.com"}'FAQ
How is the blocklist maintained?
Piisend ships a packaged phishing blocklist (PhishDestroy Destroylist Primary) and disposable domain list, with optional cron-refreshed paths in production.
A clean result means the domain is safe?
It means the domain is not on our packaged lists. Combine with MX, age, and behavioral signals for high-risk flows.