// free tool

Email checker

Paste any email address and see what a fraud engine sees — disposable domains, dead mailboxes, sender-auth, domain age, and a fraud score. Free, no signup, nothing stored.

What it checks

Disposable domain

7,860+ throwaway/temporary providers, refreshed daily from multiple sources

MX records

the actual mail servers — a domain with none can't receive mail

SPF / DMARC

whether the domain publishes sender-auth records

Domain age

registration date via RDAP — brand-new domains are higher risk

Role account

info@, support@, admin@ … addresses that aren't a person

Gibberish + plus-tag

machine-generated mailboxes and +tag duplicate-account tactics

This is one endpoint of the Kaidn API. The full /v1/score adds device reuse, velocity, geo mismatch, IP intelligence, custom rules, and plain-English explanations for every verdict. Start free or try the IP checker.