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Bulk Email Verify

Validate a list of email addresses quickly and accurately via MailTester Ninja, the upstream SMTP-verification service used by MailboxVerifier.com.

Perfect for cleaning newsletter lists, signup funnels, and B2B lead databases — drop in a list of emails, get a clean valid / invalid / catchall verdict for each one back.

What it does

For every email in your input list, the Actor performs a real-time SMTP check against the recipient's mail server and returns one of four statuses:

The Actor is built on Apify's pay-per-event model — you only pay for emails that were successfully validated. Failed lookups (timeouts, API errors) are not charged.

How to use

Input

Pass a single field, emailsRaw, with one email address per line:

{
"emailsRaw":"alice@example.com\nbob@gmail.com\ncharlie@acme.co"
}

• Up to ~1,000,000 characters of input
• Blank lines and duplicates are automatically removed
• Both user@domain.com and user@sub.domain.com are supported

Output

Every email produces one dataset row:

{
"email":"alice@example.com",
"status":"valid",
"code":"ok",
"message":"OK",
"user":"alice",
"domain":"example.com",
"mx":"mail.example.com"
}

In addition, the run's key-value store includes a ready-to-download OUTPUT.csv with every result — perfect for re-importing into your CRM or ESP.

Throughput

The Actor processes up to 10 emails concurrently with a 15-second per-request timeout. A typical 1,000-email run finishes in under two minutes.

Pricing

• Free plan users: $1.50 per 1,000 validated emails
• Paid Apify users (Starter / Scale / Business): automatic platform discount on top of the per-event price
• Errors and timeouts are free — you only pay for emails that came back with a verdict

You can see the exact per-event price for your plan in the Actor's pricing section above.

Privacy & data handling

• The Actor only forwards each email address to MailTester Ninja — nothing is stored, logged, or shared beyond that
• Your MailTester API key is stored as an encrypted Apify Secret and is never exposed in run logs
• Email content is processed in-memory and discarded at the end of each run

Use cases

• Newsletter cleanup: strip invalid addresses before a big campaign to protect sender reputation
• Signup verification: integrate into a form flow to catch typos like gmial.com at the point of entry
• B2B lead enrichment: validate a scraped lead list before pushing it to Salesforce / HubSpot / Pipedrive
• Deliverability audits: spot catch-all domains that will silently accept mail but never engage

Need higher volume or different statuses?

This Actor is a focused, no-frills verifier. If you need:

• Role-based detection (info@, support@, etc.)
• Disposable / free-webmail / spam-trap detection
• Geo or ISP enrichment
• Webhook delivery of each result in real time

…check out the full platform at mailboxverifier.com, or contact us about a custom Actor build.

Changelog

• 0.0.5 — fixed build failure caused by an invalid outputSchema field in actor.json. Build container is now created and the Actor runs end-to-end.
• 0.0.3 — initial public release with pay-per-event pricing on the email-validated event.