Email address validator
Check email syntax, verify MX records, and detect disposable addresses.
Syntax checked in your browser; only the domain is queried for MX records. Nothing is stored.
How to validate an email address
- Enter an email. Type the email address you want to validate.
- Validate. We check syntax, look up MX records and screen for disposable domains.
- Read the verdict. See whether it is well-formed, can receive mail, and any warnings.
About validating email addresses
Bad email addresses cost you bounced messages, failed sign-ups and a worse sender reputation. Validation catches the common problems before you send: typos and malformed addresses (syntax), domains that cannot receive mail at all (no MX records), and throwaway addresses from temporary-mail services. This tool runs the syntax and disposable checks locally and reads the domain’s MX records through our DNS proxy, so the address itself never leaves your browser. To inspect a domain’s records more fully, use the DNS lookup.
Frequently asked questions
- Three things: the address syntax, whether the domain has mail (MX) records so it can receive email, and whether the domain is a known disposable/temporary-mail provider.
- No. Confirming a specific mailbox requires probing the mail server, which is unreliable and often blocked. This checks the address is well-formed and the domain can accept mail — the safe, privacy-respecting signals.
- A throwaway address from a temporary-mail service, often used to dodge sign-up. We flag known disposable domains so you can decide whether to accept them.
- An address like info@ or support@ that reaches a team rather than a person. We flag these because they behave differently for marketing and verification.
- No. Syntax and disposable checks run in your browser; only the domain is sent to our DNS proxy to read its MX records, which we do not store.