Email · Available on All tiers

A valid-looking address and a deliverable one are not the same thing.

Every address runs an eight-step pipeline — syntax, typo suggestion, disposable/role/free-provider lookups, MX resolution and a live SMTP mailbox probe — so you get a real verdict, not a regex guess.

Start Free → See pricing

Free forever plan, no card required.

Why it matters

Real-time email verification

A regex can tell you `[email protected]` is shaped like an email address. It cannot tell you the domain has no mail server, that the mailbox was deleted eighteen months ago, or that "info@" bounces to nobody. Sending anyway costs you a bounce, a sender-reputation hit with your ESP, and — on a cold outreach list — a wasted send you already paid for. A verdict that only checks the shape of the string is worse than no verdict at all, because it looks like due diligence. Imagine importing a list of 10,000 leads scraped from an old conference sign-in sheet: half of them still look perfectly valid by regex standards, but a real verification pass turns up abandoned mailboxes, decommissioned company domains, and a handful of catch-all addresses that will silently accept anything you send without ever actually delivering it to a person. Only a live check against the destination mail server tells those two groups apart. It's the difference between due diligence and the appearance of due diligence, and the two are not the same thing at all. A verdict you can actually trust is worth more than a fast one you can't, especially once real money is riding on the send.

A live mailbox probe, not a guess

Past syntax and MX, a real SMTP conversation asks the destination server whether the mailbox exists — the same signal your own mail server would get, without you ever sending anything. That's meaningfully different from a syntax or MX check, both of which can pass even for a domain whose mailbox was deleted years ago — the live probe is the only step that actually asks the question that matters: is anyone still receiving mail at this address today. It's the closest thing to actually asking the mailbox itself, without ever putting a real message in its inbox. It's the step that turns a probable answer into a confirmed one.

Catch-all domains, called out by name

A domain that accepts every address gets flagged as exactly that — a distinct verdict from 'valid', so you know when 'accepted' doesn't actually mean 'exists'. That distinction matters because a catch-all domain will happily return a success response for literally any address you throw at it, real or not — treating that the same as a genuinely confirmed mailbox would quietly poison a list with addresses that look verified but were never actually checked. It's a distinction most simpler tools don't even attempt to make. Knowing the difference in advance is what keeps a list genuinely clean instead of just looking clean.

Never charged for a maybe

If a live mailbox probe genuinely isn't available when you verify, the result says so honestly and the credit is refunded automatically — you're never billed for an answer nobody could confirm. Some destination mail servers are configured to reject or throttle verification probes entirely, which is a limitation of their setup, not a failure on your end — rather than guessing at a verdict, the check reports its actual confidence level and hands your credit straight back. It's a small policy, but it's the kind of honesty that builds trust in a verdict over time. It's built to earn trust in the result, not just deliver one quickly.

FAQ

Real-time email verification, answered.

What exactly does a verification check?

Eight steps: normalization, syntax, typo suggestion (catching things like gmial.com), disposable-domain detection, role-account detection (info@, admin@), free-provider detection, MX/DNS resolution, and — where a capable server is available — a live SMTP conversation that asks the destination mailbox directly whether it exists, including a check for whether the domain is a catch-all that accepts everything. Each step narrows the possibilities a little further, so the final verdict reflects the full picture, not just one signal. Nothing in that pipeline is skipped just because an early step already looked fine.

How much does it cost?

It runs on credits, included free every month: 100 on Free, 1,000 on Starter, 5,000 on Team. Need more? Pay-as-you-go packs start at $6 for 1,000 credits and never expire, on top of whatever your plan already includes. Because packs never expire and stack on top of your monthly allowance, there's no pressure to guess your usage months in advance — buy a pack when you actually need it, and any credits left over roll forward indefinitely. It's priced so that a small site can rely entirely on the free allowance for a long time before ever needing a pack. There's rarely a reason to reach for a pack before the monthly allowance runs out.

Do failed checks still use up a credit?

A credit is spent when a verification runs, regardless of the verdict it returns — a result of invalid or risky still uses a credit, the same as one that comes back valid, because the check itself was still performed. The one exception is when a live mailbox probe genuinely can't be completed: in that case the result is reported honestly and the credit is refunded automatically. That policy exists specifically so you're never left guessing whether an unusual result quietly cost you something. It's a fairness principle built directly into how the credit system works.

Get Started

Real-time email verification. Free, starting now.

Start Free →