Free tool
Free Email Verifier
Verify any email address in seconds. 5 free checks per day, no signup required.
No account, no card, no trial. The daily allowance is counted per IP address and is shared across every checker on this site.
What you are getting
The free checker is not a cut-down version.
Most free email verifiers are a sample of a paid product. They run a lighter check, hide the detail behind a signup, or quietly skip the hard addresses so the tool always looks fast. That is a reasonable way to build a lead magnet and a poor way to answer a question.
This checker runs both passes of the same engine used on paid lists. Pass one handles the mechanical checks: syntax, whether the domain resolves, whether it publishes mail servers, and whether those servers acknowledge the specific mailbox. Most addresses are settled there and come back in about half a second.
Pass two exists for everything pass one could not settle, principally addresses sitting on catch-all domains that accept mail for anything at all. Rather than reporting that ambiguity back to you as a status, a proprietary catch-all resolution engine re-tests the mailbox and returns an actual verdict for roughly 72 percent of that segment. You get the same result a paying customer gets on the same address, including the confidence score and the flags for role, disposable and free-provider addresses.
What you do not get is volume. Five checks a day is the whole restriction, and it is the only one.
Reading the result
What your result means.
Every check returns one of four verdicts and a confidence score out of 99. Here is what each one is telling you, and what to do about it.
The mailbox exists and accepts mail.
The domain resolves, it has working mail servers, and the specific mailbox was confirmed. This is the only verdict you should treat as safe to send to without further thought. On a healthy B2B list these are usually 60 to 75 percent of addresses.
The mailbox does not exist.
Either the domain has no mail servers or the server rejected this specific mailbox outright. Sending here produces a hard bounce, which is the single most damaging signal for a sending domain. Remove these rather than keeping them for a later attempt.
It resolves, but something about it is worth knowing.
The address may be a role account such as info@ or sales@, a disposable address from a throwaway provider, or a mailbox on a catch-all domain that the second pass could not confirm with high confidence. Deliverable in the technical sense, but not always worth the send.
The server would not give a straight answer.
Some mail servers deliberately refuse to confirm or deny a mailbox, and a small number are simply unreachable at the moment of checking. Our second pass is designed to shrink this category, which is why it appears far less often here than on single-pass tools.
About the confidence score
Alongside the verdict you get a score out of 99. It is not a second opinion on the verdict, it is a measure of how firmly the evidence supports it. A mailbox confirmed directly by the mail server scores in the nineties. An address resolved by the second pass on a catch-all domain scores lower, because the underlying signal is weaker even when the answer is the same. Use it to decide which risky results are worth a manual look.
Which one you need
Five a day, or a list run.
These solve genuinely different problems. Most people who land here need the first one.
| Situation | Use |
|---|---|
| Checking one contact before you email them | This free checker |
| Confirming your own address is reachable | This free checker |
| Testing a verifier before you trust it | This free checker |
| Cleaning a CSV before a campaign | Bulk verification |
| Verifying more than 5 addresses in a day | Bulk verification |
| Checking addresses at signup, in real time | The REST API |
If you need the list run
A free account comes with 100 credits, which verifies 100 addresses at no cost and requires no card. After that, credit packs start at $7 for 1,000 and never expire, so an account you use twice a year costs nothing to keep. Full rates are on the pricing page, and the engine is described on the features page.
What the free checker deliberately leaves out
Four things, so you can decide quickly whether this page is enough. There is no upload: it takes one address typed into the box, not a file. There is no history, so results are not saved anywhere you can return to and nothing can be exported. There is no API key, because programmatic access is tied to an account. And there is no way to raise the daily allowance, including by creating an account, since accounts move you onto credits rather than a larger free tier.
None of that is a trick to push you toward paying. A single-address tool that answers honestly and asks for nothing is genuinely useful, and it is what most people arriving on this page need. The moment you want a second address checked in the same minute, you have outgrown it, and that is the point at which credits make sense.
Honest positioning
How this differs from other free checkers.
Two differences are worth stating plainly, and neither is about accuracy on ordinary addresses. On a straightforward mailbox at a domain with normal mail servers, every credible verifier agrees.
The first is gating. Several well-known free checkers ask for an account before they will show you anything useful, or return a partial result and put the detail behind a signup. Hunter’s verifier, for instance, is tied to an account with monthly limits. This page asks for nothing and shows the full result including the confidence score and every flag.
The second is what happens on catch-all domains. Most free tools detect that a domain accepts everything and stop there, returning catch-all, accept-all or unknown. That is accurate and it is not an answer. The second pass is the part that is unusual to find in a free tool at all, and it is the reason a result here is more often a verdict than a shrug. If you want the long version, the verifier comparisons go through each competitor in detail.
FAQ
Free email verifier questions.
Is this email verifier really free?
Yes. Five checks per day with no account, no card and no trial that converts into a charge. Nothing is held back for a paid tier: the free checker runs the same two-pass engine as paid list verification, and returns the same verdict and confidence score you would get inside the dashboard. The only limit is volume.
How accurate is the free email verifier?
It is exactly as accurate as our paid verification, because it is the same engine. Accuracy is highest on addresses where the mail server gives a clean answer, which is most of them. The difference between verifiers shows up on catch-all domains, where a second pass resolves roughly 72 percent of what single-pass tools return as unknown.
Why only 5 checks per day?
Every check makes real SMTP connections to real mail servers, which costs us money and consumes the reputation of the infrastructure doing the checking. Five per day is enough to settle a specific question without the tool becoming a free bulk verifier. The limit is counted per IP address across a rolling 24 hours, and it covers this page, the homepage checker and the verify page together rather than resetting on each one.
Do you store the emails I check?
Yes, and it is worth being precise about it. Each check records the address, the verdict it returned and the IP address that submitted it. That record is what enforces the daily limit, so the tool cannot work without it. Checks made here are not added to any list, not used to build a database for sale, and not linked to an account, because the free checker has no accounts.
Can I verify a whole list with the free checker?
Not through this page. Five per day is a single-address tool by design. List verification lives in the dashboard, where you upload a CSV of up to a million rows, the email column is detected automatically, and you see the exact credit cost before anything runs. New accounts start with 100 free credits, which verifies 100 addresses at no cost.
What makes two-pass verification different from a normal email checker?
Most free checkers run one pass and stop. When they meet a catch-all domain, one that accepts mail for every address whether or not the mailbox exists, they return catch-all or unknown and hand the decision back to you. A second pass re-tests exactly that segment with deeper SMTP-level verification, turning a status into a verdict. On B2B lists that segment is a quarter of the addresses.
Five checks is a taste.
Run a whole list through the same engine with 100 free credits. No card required.
Checking one specific address right now? The guide to verifying an email address walks through what happens at each stage of the check.