Free Email Validation API — syntax, MX records, and disposable-domain checks
The /email namespace checks syntax, real DNS MX records, and a curated disposable-domain list — three independent checks combined into one is_valid result, not a regex guess.
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What's included in /email
Real MX record lookup
Checks whether the domain actually has mail-exchange DNS records — a syntactically valid address can still be undeliverable.
Disposable domain detection
Matched against a curated list of 30+ known temp-mail providers, to keep throwaway addresses out of your signup flow.
Full validation suite
Bulk validation, role-account detection, catch-all detection, and free-provider detection round out the namespace.
MX records in the response
Returns the actual mail-exchange records found, not just a pass/fail boolean.
One key, every namespace
Same key validates emails and phone numbers (see /phone) without a separate vendor relationship.
Start using the email validation API free today
Free tier — 500 calls/month, no credit card. Upgrade when you need more.
Frequently asked questions
Does this catch disposable email addresses?
Yes — checked against a curated list of 30+ known temp-mail and disposable domains.
Does it verify the mailbox actually exists?
No — that requires an SMTP handshake which most mail servers block or rate-limit aggressively. This checks syntax, MX records, and disposable-domain status, which catches the large majority of bad signups without false positives.
Is there a bulk endpoint?
Yes — /bulk-validate accepts multiple addresses in one call.
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