Email Validator

Validate email addresses with our free online tool

Enter Email Address

Enter a complete email address to check its validity

Email Validation Rules

• Username can contain letters, numbers, dots, underscores, percent, plus, or minus
• Must have the format [email protected]
• Domain must contain letters, numbers, dots, and hyphens
• Must have a valid top-level domain (TLD)
• Cannot contain spaces or certain special characters

How to use Email Validator

1
Enter an email address
Type or paste a complete email address such as [email protected] into the input field.
2
Click Validate Email
Press Validate Email to check the address against standard email format rules.
3
Review the validation details
See whether the address is valid and inspect each check: the @ symbol, username, domain format, top-level domain, and overall format.

4
Copy or clear
Use Copy to save a confirmed address, or Clear to test another one.

Frequently asked questions

What exactly does this tool check?

It verifies the syntax of an email address: that it contains an @ symbol, a valid username portion, a properly formatted domain, a recognized top-level domain (TLD), and a valid overall structure. It checks formatting rules, not whether the mailbox actually exists.

Does a valid result mean the email can receive mail?

No. A passing result only means the address is correctly formatted. The mailbox could still be inactive, full, or nonexistent. For confirming deliverability, you would need a dedicated email verification service that performs domain and SMTP checks.

What characters are allowed in a valid address?

The username may contain letters, numbers, dots, underscores, percent signs, plus signs, and hyphens; the domain may contain letters, numbers, dots, and hyphens; and the address cannot contain spaces or certain disallowed special characters. It must follow the [email protected] pattern.

Why is my address marked invalid?

Common reasons include a missing @, no domain extension, a stray space, an invalid TLD, or disallowed characters in the username or domain. The Validation Details panel highlights exactly which rule failed so you can fix it.

Is my email address kept private?

Yes. Validation runs locally in your browser using format rules, so the address you enter is never uploaded or stored. The tool is free and requires no registration.

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