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Email Validator

Check deliverability & catch fakes

Email Validator checks whether an email address is real and deliverable — or a disposable, fake, or role-based address that will never convert. It returns a confidence score so you can make data-driven decisions about which addresses to keep.

Each check verifies format, looks up DNS and MX records to confirm the domain can receive mail, detects disposable and temporary providers, flags role-based addresses like info@ and support@, and surfaces any blacklist signals. Bulk mode handles up to 20 addresses in a single call with summary counts so you can clean a list quickly.

What you can do

  • validate_email — validate a single address with format check, DNS/MX verification, disposable detection, confidence score, and risk signals
  • bulk_validate — validate up to 20 addresses at once with a summary of invalid and disposable counts

Who it's for

Marketers cleaning email lists, developers validating signup forms, sales teams qualifying CRM data, and anyone who needs to stop bounces before they hurt deliverability.

How to use it

  1. For a single address, call validate_email — a confidence score below 50 means likely undeliverable.
  2. For list cleaning, call bulk_validate with an array of up to 20 addresses.
  3. Filter out any results where disposable is true or confidence is below 50 to keep only high-quality addresses.

Getting started

Call validate_email with any email address. No setup or API key required.

Validate Email

Validate a single email address. Returns format validity, disposable/temporary provider detection, DNS and MX record verification, confidence score, role-based address detection, and risk signals.

Returns: Validation result including format check, disposable detection, DNS/MX verification, confidence score, role-based detection, and risk signals
Bulk Validate Emails

Validate multiple email addresses at once (up to 20). Returns validation results for each address including format validity, disposable detection, DNS verification, confidence scores, and risk signals.

Returns: Array of validation results for each email with summary counts for disposable and invalid addresses
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v0.022026-03-22
  • Added subtitle, expanded description, and agent instructions
v0.012026-03-21
  • Initial release with validate_email and bulk_validate skills

Email Validator Use Cases(2)

Browse all 2 Email Validatorguides →
Open Bulk Validate an Email List

Bulk Validate an Email List

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Find relevant academic papers on any research topic across millions of scholarly publications.

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Open Geocode Addresses to Coordinates

Geocode Addresses to Coordinates

Convert street addresses into precise latitude and longitude coordinates for mapping and spatial analysis.

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Address Geocoding
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See every Email Validatoruse case (Claude, ChatGPT, Copilot, OpenClaw guides) →

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Frequently Asked Questions

What is the difference between valid format and deliverable?

The tool checks format, DNS and MX records, and risk signals, so an address can be syntactically valid without being a good email to send to.

Can it detect disposable or role-based emails?

Yes. It flags disposable providers and role-based addresses like info@ or support@ so you can filter low-quality leads.

How many emails can I check at once?

`bulk_validate` handles up to 20 addresses in one call and returns per-address results plus summary counts for invalid and disposable emails.

How should I read the confidence score?

Confidence is scored from 0 to 100. A score below 50 usually means the address is likely undeliverable or too risky to trust.