Email Validator

A precise tool to validate emails for form signups, campaigns, and databases, helping identify invalid or risky addresses before sending.

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3,228+

Total Calculations Run

< 15ms

Browser Execution Speed

100%

Client-Side Privacy

4.9 / 5.0

User Satisfaction

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About This Tool

The tool analyzes an input email address to determine if it is likely deliverable. It performs a syntax check against a robust pattern, normalizes the local part when possible, and extracts the domain for further validation.
Domain validation includes DNS MX record lookup to confirm the domain can receive mail, and optional checks against known disposable or temporary email providers. When enabled, a risk score reflects quality, status, and historical deliverability.
Outputs include a boolean valid flag, a reason string, the domain, MX records, a disposable flag, and a deliverability score. Advanced modes may reveal recommended actions for list hygiene and re-verification cadence.
Designed for developers, marketing teams, and data hygiene engineers, the tool supports internationalized domains and punycode, handles edge cases like multiple '@'s and idn, and fails gracefully when DNS queries are unavailable.

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How to Use

Provide inputs: enter the email address to validate and select verification depth.
Run validation: choose basic syntax check or full domain verification with MX lookup and disposable checks.
Review outputs: read the valid flag, reason, domain, MX records, disposable indicator, and deliverability score.
Integrate results: use the outputs to cleanse lists or gate form submissions.
Optional: enable advanced checks like IDN handling or SMTP verification if permitted.

Frequently Asked Questions

Find Quick Answers

What does the tool validate?

It validates syntax against a robust pattern, extracts the domain, checks MX records for mail delivery capability, detects disposable addresses, and provides a deliverability score that combines these signals with optional SMTP checks if enabled.

Can it check disposable emails?

Yes. When the disposable-check option is enabled, the tool flags known temporary providers and incorporates this signal into the deliverability score; this helps prevent risky or short-lived addresses from affecting campaigns.

Does it perform SMTP verification?

SMTP verification is optional and may be restricted by network policies. When enabled, it attempts an informal handshake to assess mailbox existence, but results are subject to server configuration, greylisting, and privacy constraints.

Is data processed locally or via external services?

By default, input data is processed locally with DNS lookups performed by internal components. If external DNS services are configured, data may be sent to those services; privacy controls can be applied to minimize exposure and comply with regulations.

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