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Email Validator

Validate any email address format instantly. Check syntax, domain structure, and common typo patterns without sending a test email.

Used 54.0K times today

How to Use Email Validator

  1. 1

    Enter the email address

    Type or paste the email address you want to validate into the input field.

  2. 2

    Click Validate

    Press the Validate button to instantly check the email against RFC 5322 syntax rules and common domain patterns.

  3. 3

    Review the result

    See whether the address is valid or invalid, and read the specific reason if validation fails — such as missing @, invalid domain, or illegal characters.

Frequently Asked Questions

Does this tool actually send an email to verify the address exists?
No. This tool checks the format and syntax of the address only. It does not send a verification email or connect to a mail server to confirm the mailbox exists.
What does a valid email format look like?
A valid email has a local part (before the @), the @ symbol, a domain name, a dot, and a top-level domain — for example [email protected].
Can this catch typos like gmial.com?
Yes. The validator flags common misspellings of popular domains such as gmail.com, yahoo.com, and outlook.com, helping users correct obvious typos before submitting a form.

About Email Validator

The Email Validator on Utilko provides instant client-side syntax checking for any email address. It enforces the rules defined in RFC 5322, which governs what constitutes a structurally valid email address, and additionally flags commonly misspelled popular domains to help catch typos before they cause problems.

Use this tool to pre-screen email addresses on contact forms, clean imported mailing lists, or simply confirm that an address you've been given follows the correct format. Because validation runs in-browser, it is fast, private, and requires no server round-trip.

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