Free Email Verifier
Check syntax and DNS/MX records for any email address in seconds. Free, no signup required.
2 free checks per day, no signup needed. Full accounts get live SMTP verification with 100 free credits.
How It Works
Syntax check
We validate the email format against RFC standards.
DNS/MX lookup
We confirm the domain has valid mail servers configured.
Disposable check
We flag known disposable/temporary email providers.
Frequently Asked Questions
Is this really free?
Yes. This tool checks email syntax and DNS/MX records at no cost and with no account required. It does not perform live SMTP mailbox verification.
Is there a limit on how many checks I can run?
Yes — to keep this free tool available to everyone, anonymous checks are capped at 2 per day per visitor. If you need more, sign up for a free RocketVerifier account (100 free credits) for unlimited-tier access to the full API.
How is this different from the full RocketVerifier API?
This free check validates format and confirms the domain can receive email. The full API additionally connects to the mailbox via SMTP to confirm the specific address exists, detects catch-all domains, and returns a 0-100 confidence score.
Can I verify a list of emails with this tool?
This page checks one email at a time. For bulk verification of lists, sign up for a free RocketVerifier account (100 free credits) and use the bulk upload or API.
Will this tool tell me if a mailbox is full or disabled?
No — that requires live SMTP verification, which is only available with a paid RocketVerifier account or sandbox API key.
Need Live Mailbox Verification?
Get 100 free credits and full SMTP verification with a RocketVerifier account.
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