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Email Validator

Developer

Check unquoted ASCII email syntax locally, without DNS, MX or mailbox checks.

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Checks unquoted ASCII address syntax only. This does not check DNS, mailbox existence, or deliverability. Use Punycode for international domain names.

Email Address
Validation Result
Enter an email address to validate

Check the syntax of unquoted ASCII email addresses, including local-part dots, lengths and domain labels. This does not check DNS, MX records, mailbox existence or deliverability.

See more about the Email Validator

Key features

  • Clean interface
  • Fast processing
  • No signup required
  • Works offline

Related Blog Posts

Quick answers for Email Validator

Does it check DNS or mailbox existence?
No. It checks unquoted ASCII email syntax locally, without DNS, MX, mailbox or deliverability checks.
What syntax does it check?
It checks lengths, allowed ASCII characters, local-part dot placement and hostname labels. Quoted local parts and internationalized email syntax are outside this tool’s scope.
What does it tell me when an email is invalid?
A specific reason, such as a missing @ symbol, invalid characters in the local part, or an invalid domain format.