Disposable email checker. Free.
Paste any email domain. We tell you if it is a disposable / throwaway provider, whether it is tied to phishing, and if you should block it at signup.
Disposable email domain.
mailinator.com is a throwaway mailbox provider. Expect fake signups and trial abuse from addresses here.
Showing mailinator.com, a well-known disposable provider. Type any domain above to check yours.
Real domains, real verdicts.
mailinator.com
Disposable · high
The classic public throwaway inbox. Any mailbox is readable by anyone; a canonical burner provider.
guerrillamail.com
Disposable · high
Self-destructing temporary addresses. A staple of fake signups and free-trial abuse.
yopmail.com
Disposable · high
No-registration temp mailboxes, heavily used to slip past email verification.
temp-mail.org
Disposable · high
One of the most-searched temp-mail brands. A textbook burner domain.
protonmail.com
Legitimate · low
A real privacy-focused mailbox. Not disposable; score other signals, never block outright.
gmail.com
Legitimate · low
The world's biggest inbox. Allowlisted, never flagged disposable.
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Free API key, unlimited disposable-email checks, batch up to 100 addresses, and the full open domain list to download.