Bulk Email Verifier
Verify a whole list of email addresses at once: syntax, live MX records, and disposable, role and typo detection, scored per address. Free, exports a clean list.
Verify a list of emails
Paste up to 200 addresses. We check syntax and live MX records for each, sharing one lookup per domain.
What this bulk email verifier does
Common use cases
- 1Cleaning a list before importing to an ESP
- 2Screening sign-ups collected offline
- 3Reducing bounce rate before a campaign
- 4Auditing an old list for dead domains
- 5Removing disposable addresses in bulk
- 6Preparing a CSV export for sending
Related tools
About bulk email verification
Verifying a list before you send protects your sender reputation: dead domains and disposable addresses cause bounces, and high bounce rates get you throttled or blacklisted. Checking in bulk turns a risky list into a clean one.
This verifier runs the same real checks as the single-address validator — syntax and live MX resolution plus disposable, role and typo detection — across your whole list, resolving each domain only once for speed. It does not perform an SMTP mailbox probe, so treat the results as a strong risk screen; everything runs live over DNS with the list processed in your browser.
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Got Questions? We Have Answers.
How many addresses can I verify at once?
Up to 200 per run. Each is checked for syntax and live MX records, with disposable, role-based and typo detection, and scored 0-100. Split larger lists into batches.
Does it confirm each mailbox exists?
No. Like the single validator, it does not run an SMTP mailbox probe (unreliable and widely blocked). It is a strong risk screen based on syntax, live MX and reputation signals.
Why is it fast for big lists?
It resolves each unique domain only once and reuses the result across every address on that domain, so a list of 200 addresses on 30 domains does 30 lookups, not 200.
What does "deliverable" mean here?
An address with valid syntax whose domain has a working MX record and is not disposable. These are safe to keep; risky and invalid ones are separated out.
Can I export the results?
Yes. Copy the clean, deliverable-only list with one click to paste straight into your email platform.
Is my list uploaded anywhere?
The list is processed in your browser and the only network calls are the live DNS lookups for each domain. The addresses themselves are not stored.