Free tool

Free email list checker

Paste a list. The analysis runs in your browser, so nothing is uploaded until you choose to verify.

Verify · List · EMCHEQSample

Verify

List

Paste or type addresses. The X-ray updates as you go, and it runs in your browser.

Paste emails one per line

X-ray free · in your browser

How it works

Three steps.

Paste your list

Paste addresses one per line, or separated by commas.

Review the X-ray

See duplicates, malformed rows, role accounts and free-mail share, computed locally.

Verify a sample

Send up to 20 addresses to the live checker and download the clean results.

Keep reading

Guides that go with this tool.

Deliverability

Bounce rate and sender reputation

Learn how hard and soft bounces and invalid addresses affect sender reputation, what verification can fix, and a simple list-hygiene routine.

Read the guide →

Fundamentals

What is email verification?

Email verification checks whether an address can receive mail without sending one: syntax, domain, mail servers and mailbox. Learn the checks and limits.

Read the guide →

FAQ

Common questions

The short answers. The rest you can find out by trying it free.

Start verifying

Is my list uploaded?

No. The analysis runs in your browser. Only if you press Verify are up to 20 addresses sent to the live checker.

How many addresses can I verify here?

This page verifies up to 20 at a time. Sign up free to verify full lists.

What file formats does the full product accept?

CSV, TXT and XLSX, parsed in your browser before you confirm.