Check if any @gmail.com, @googlemail.com or Google Workspace custom domain address exists and can receive mail — instantly and without sending a message.
gmail.com, googlemail.com & Google Workspace
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Primary MX: aspmx.l.google.com, alt1.aspmx.l.google.com, smtp.google.com
In Gmail, john.doe@gmail.com and johndoe+newsletter@gmail.com route to the exact same inbox. KaijuVerifier normalizes Gmail local parts so you never pay twice for duplicate subscribers.
Millions of B2B companies host their custom domain on Google Workspace. Our MX engine fingerprints Google MX records automatically and tests whether the workspace is configured as catch-all.
When a Gmail account is deleted, suspended, or never existed, Google SMTP returns 550-5.1.1 ("The email account that you tried to reach does not exist"). We catch this in under 300ms.
Enter the @gmail.com address above and click Verify Email. KaijuVerifier performs an RFC syntax check, verifies Google MX records, normalizes dot/plus aliases, and executes a non-intrusive SMTP RCPT TO check against Google mail servers without delivering any message.
Yes. Gmail completely ignores periods (.) in the username part of @gmail.com addresses and ignores everything after a plus sign (+). Our engine returns a normalized address field so you can deduplicate your CRM.
Yes. Even when a company uses its own domain (e.g. @acme.io), our MX fingerprinter detects Google Workspace infrastructure and applies Google-specific SMTP and catch-all verification rules.