Free Email Verifier Tool
Check whether any email address is valid, invalid or risky before you hit send. Cut your bounce rate, protect your sender reputation and land more cold emails in the inbox.
Enter any email address (for example "name@company.com") to check whether it's valid before you send.
- Syntax check
- Domain & MX records
- Mailbox ping
No email is ever sent to the address you check.
How the free email verifier works
Type in an email address and we run the same checks our product uses to keep your campaigns clean:
Syntax check
We confirm the address is correctly formatted.
Domain & MX records
We verify the domain exists and is set up to receive mail.
Mailbox check
We ping the inbox to confirm it can accept email, without ever sending a message.
Illustrative addresses. It's the same double-verification engine that powers Emailchaser's product.
Understanding your verification result
Valid
The mailbox exists and can receive email. Safe to send.
Invalid
The address doesn't exist or can't receive email. Remove it before sending; it will bounce.
Catch-all (risky)
The domain accepts all addresses, so we can't confirm this specific mailbox. Send with caution.
Unknown
The mail server didn't give us a definitive answer in time. Try again shortly.
Why verify email addresses before cold emailing
Every cold email you send to a dead address counts as a bounce. A high bounce rate tells mailbox providers like Google and Microsoft that you don't keep a clean list, which hurts your sender reputation and pushes your messages into spam, even for the contacts who do exist.
Verifying before you send keeps your bounce rate low, protects deliverability and makes every send count. Pair it with a gradual mailbox ramp-up and well-structured cold email campaigns for the best results.
Verification protects the mailbox from bounces. It cannot give a brand new mailbox a sending history, which is the other thing Google and Microsoft weigh, so switch on warmup for each sending inbox and let its daily volume climb to the mailbox cap over weeks instead of on day one.
Bulk email verification
The free tool above checks one address at a time, which is perfect for quick lookups. Before a campaign you'll usually want to verify a whole list at once: paste or upload your list into Emailchaser and every address is verified in bulk automatically before your emails go out.
You'll get more out of bulk verification if you clean the list first. Run it through our free remove duplicate emails tool so the same address is never verified (or emailed) twice, and use our email finder to fill in addresses for prospects you only have a name and company for.
Make bulk verification part of every pre-send routine, not a one-off. Email addresses go stale as people change jobs, so a list that was clean three months ago can quietly rack up bounces today, and it's your sender reputation that pays for it.
Need to verify a whole list?
This free tool checks one address at a time. Inside Emailchaser, every address is run through our double email verification automatically before each campaign sends, so you can verify in bulk and never email a bad address again. Building your own product or cleaning lists programmatically? Our sister tool 1Lookup offers a real-time email verification API you can call straight from your own stack.
More free tools from Emailchaser
Found an invalid address? Use our free email finder to find the right one, then send with Emailchaser's all-in-one cold email software. Got a valid address but no idea whose it is? Our free reverse email lookup works back from the address to the likely name, the company behind the domain, and the public pages it appears on.
Frequently asked questions
Yes. You can verify up to 10 email addresses per day for free, with no account required. If you need to verify more, you can verify in bulk inside Emailchaser.
We check the address syntax, confirm the domain has valid MX (mail exchange) records, and ping the mailbox to see whether it can receive email, without actually sending anything. It's the same double-verification engine that powers Emailchaser's product.
A catch-all (or accept-all) domain is configured to accept email for every address, so the mailbox server can't tell us whether a specific inbox exists. These addresses are riskier to email and can still bounce.
The free tool checks one address at a time. To verify a whole list, upload it to Emailchaser and every address is verified in bulk automatically before your campaign sends. Deduplicate the list first with our free remove-duplicate-emails tool so you never verify or email the same address twice.
Yes. Removing invalid addresses before you send is the single most effective way to lower your bounce rate, protect your sender reputation, and keep your cold emails landing in the inbox.
We only use the address to perform the verification and enforce the daily free limit. The tool is intended for checking addresses you already have permission to contact.