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Email Validator

Check email syntax locally so you can catch malformed addresses before APIs or imports.

Results

Processing…
Status
Processing...
Details
Processing...

How to use this validator

  1. Paste or type the email address.
  2. Run validate to check syntax and domain format.
  3. If invalid, fix missing @/TLD or invalid characters and re-run.

Rules & checks

Validates structure, @ placement, and domain format with TLD.

Allows plus-addressing and subdomains.

Runs in-browser only; no network calls.

Inputs explained

  • Email

    Enter a full email with @ and TLD. Plus tags and subdomains are supported.

When to use it

  • Pre-validate form inputs before API calls
  • Check bulk emails in CSVs before importing
  • Debug bounced emails caused by malformed addresses

Common errors

  • Missing TLD or malformed domain
  • Multiple @ symbols
  • Spaces or invalid characters

Limitations

  • Format-only; does not verify inbox existence or MX/DKIM/DMARC deliverability.
  • Does not check spam reputation, mailbox quota, or server availability.
  • TLD validation is pattern-based; some niche TLDs may still pass if syntactically correct.

Tips

  • Require TLDs for production signups
  • Use server-side checks to confirm deliverability when needed
  • Trim whitespace before validating user input

Examples

Valid

  • user@example.com -> Valid

Valid plus

  • user+tag@example.co.uk -> Valid

Invalid (no TLD)

  • user@localhost -> Invalid (needs TLD)

Invalid chars

  • user@@example.com -> Invalid

Deep dive

This email validator checks address syntax, plus-tags, and domain/TLD format entirely in your browser—ideal for cleaning form inputs or CSV imports quickly.

Pair it with MX, SPF, DKIM, and DMARC validators if you need deeper deliverability checks. Nothing is uploaded or stored.

FAQs

Do you check deliverability?
No. This is format-only; it doesn’t ping mail servers or inboxes.
Are plus-addresses supported?
Yes. Standard syntax with plus-tags and subdomains is supported.
Is my email stored?
No. Validation runs locally and the value is not sent anywhere.
Do you verify MX or DNS?
Not here. Use the MX, SPF, DKIM, or DMARC validators for DNS-level checks.
Why did a valid-looking address fail?
Common issues: missing TLD, extra @, spaces, or invalid characters. Correct and re-validate.

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All validation happens in your browser. No data is sent, logged, or stored.

Format-only; does not verify inbox existence or deliverability.