Email verifier · bulk email list validation A bounced email doesn't cost you just that send — it costs you every next one.

Past roughly 2% bounces, the provider starts sending everything you write to the spam folder — including to people who wanted it. Upload your list and find out which addresses exist, which would bounce, and which aren't worth the risk.

Test one email now → How it works

100 free verifications No subscription Credits never expire Nobody receives a message

Try it now, no signup

3 free verifications per day. Nobody receives any message — our server only asks the recipient's server whether that mailbox accepts email.

The problem

Your list ages on its own, and the provider charges you for it

People change jobs

The mailbox is shut down and nobody tells you. The list you built a year ago is not the same list today — and its dead share grows every month, silently.

The provider measures, and punishes

Gmail, Outlook and the rest count how many of your messages bounce. Past roughly 2%, they stop trusting your domain — and your next good email goes to spam.

Your form accepts typos

Someone types "gmial.com" and your site thanks them for subscribing. The contact is born dead in your database, and you pay for it on every send from then on.

You only find out afterwards

The list you bought, inherited or collected at a trade show was never verified. The damage shows up in the send report — after the harm to your reputation is done.

How it works

Nine checks before we say anything

Every email goes through nine layers, from the cheapest to the most expensive. The first ones resolve most of them without spending a single connection — and the ones left are probed at the pace each destination server accepts.

SyntaxMissing @, has a space, the domain is incomplete. Costs no credit.

DuplicateThe same address twice in the same list counts once — and the second one is free.

Typo"gmial.com", "hotmial.com", "outlok.com" — we return the correction alongside the verdict.

Disposable emailServices built to last minutes. People who use them don't want to be reached later.

Does the domain receive email?A domain with no mail server configured bounces everything. Resolved with a single lookup, no connection.

Role addresscontact@, sales@, support@ — they exist, but are usually heavily filtered with low reply rates. You get told.

Does the mailbox exist?Here our server talks to the recipient's server and asks — then ends the conversation before sending anything.

Does the domain accept everything?Some accept any address, real or not. When that's the case, we say "risky" instead of faking certainty.

Network memoryAn address that has definitively refused mail before is recognized instantly, without spending a new connection.

The result

Four answers, not one vague score

Every email comes back with a verdict, the reason in plain words, and a 0–100 score. You know what to do with each line — not just that the list "has poor quality".

score 90 to 100

Valid

The mailbox exists and the server confirmed it. Safe to send.

score 0 to 10

Invalid

Doesn't exist, doesn't receive, or has already refused definitively. Don't send: every attempt counts as an error against your domain.

score 40 to 60

Risky

Can't be confirmed from outside — the provider doesn't answer, or the domain accepts anything. Send only to people who already replied to you. Don't throw them away: that's usually where the big client is.

score 30

Unknown

The server didn't answer in time, even after retries. Re-check in a few days — and it doesn't cost again within 24 hours.

Nobody is 100% accurate, and anyone promising that is lying. Gmail, Outlook and a few others don't answer verification on purpose. In those cases we'd rather say "risky" than guess "valid" and let you find out at send time.

After the cleanup

The list stays clean on its own

Verifying once solves today. What solves it forever is verification happening without you remembering it.

In Email Marketing

Every new contact is verified before the first send, and invalid ones never receive a message. The ones removed are kept in quarantine — nothing is deleted.

In SDRConvert

Before the cadence starts, the contact's email is checked. If the mailbox doesn't exist, the agent looks for another address instead of burning your domain trying.

On your website form

One line of code warns people the moment they mistype their email — before it becomes a dead contact in your database.

In your own system

The API verifies one email in under 10 seconds, or a whole list at once, with the answer in the same format as the screen.

API · verify one email

# one call, answer in under 10 seconds
curl -X POST https://autoagencia.io/api/v1/aimailcheck/verify \
  -H "Authorization: Bearer mc_sk_..." \
  -H "Content-Type: application/json" \
  -d '{"email":"[email protected]"}'

response
{
  "email":   "[email protected]",
  "status":  "valido",
  "motivo":  "caixa confirmada",
  "score":   100
}

Pricing

You pay per verification, not per month

1 credit verifies 1 email. A duplicate in the same list is free, invalid syntax is free, and an email already verified in the last 24 hours doesn't cost again. Credits never expire.

1.000verifications {{price:mc_pack_1k:one_time|see the price}} {{unit:mc_pack_1k:1000: per email: per 1,000 emails|per-email price at checkout}}

−24% 5.000verifications {{price:mc_pack_5k:one_time|see the price}} {{unit:mc_pack_5k:5000: per email: per 1,000 emails|per-email price at checkout}}

−36% 10.000verifications {{price:mc_pack_10k:one_time|see the price}} {{unit:mc_pack_10k:10000: per email: per 1,000 emails|per-email price at checkout}}

−49% 25.000verifications {{price:mc_pack_25k:one_time|see the price}} {{unit:mc_pack_25k:25000: per email: per 1,000 emails|per-email price at checkout}}

−56% 50.000verifications {{price:mc_pack_50k:one_time|see the price}} {{unit:mc_pack_50k:50000: per email: per 1,000 emails|per-email price at checkout}}

−62% 100.000verifications {{price:mc_pack_100k:one_time|see the price}} {{unit:mc_pack_100k:100000: per email: per 1,000 emails|per-email price at checkout}}

On activation you get 100 verifications. No card, no subscription, no commitment — enough to test with your own list before deciding.

Who reads the result with you

A spreadsheet with 10,000 verdicts solves nothing by itself

Alice looks at your batch and tells you what to do, with numbers: how many to remove, how many to keep, which domains failed most, and what percentage of your list would cause trouble when sending. If you tell her to, she pulls the invalid ones out of your Email Marketing list herself — keeping everything in quarantine, because nothing gets deleted.

Verification agent

Alice

Reads your batch, explains every reason in plain words and tells you what to do — with numbers. If you say so, she removes the invalid ones from your list herself.

What she does

Reads the batch, explains every reason in plain words, recommends what to remove, and runs the cleanup when you confirm.

What she never does

Promise 100% accuracy, tell you to throw away the risky ones, or sell you a pack. If credits run short, she says how many are missing and stops there.

Your AI team

Also on your team

Orion coordinates every specialist and Zion is with you day to day — both are part of every AutoAgencia team.

Orion

Team Coordinator

Agency director: understands the goal, breaks down the problem, brings in the right specialists and consolidates the result into an executive plan.

Zion

Onboarding Concierge

An extraterrestrial robot that masters technology, AI and AutoAgency: the customer's companion and concierge inside the app — guides you, checks your account, walks you through onboarding and routes missions with context.

Questions

What people ask before signing up

How do you know an email exists without sending anything to it?

Our server talks to the recipient's mail server and asks whether that mailbox accepts messages — then ends the conversation before sending anything. Nobody receives anything, nobody is notified. It's the same question your provider would ask at send time, only asked earlier and without spending your reputation when the answer is no.

Are you 100% accurate?

No, and anyone promising that is lying. Gmail, Outlook and a few others don't answer that question on purpose — in those cases the verdict is "risky", which means exactly "we can't confirm from outside". We'd rather say we don't know than guess "valid".

What do I do with the "risky" ones?

Don't throw them away. That's usually where the big client is, because large companies hide the mailbox on purpose. Send to people who have interacted with you at least once and leave out those who never opened anything.

Is there a subscription?

No. You buy a credit pack and use it whenever you want — credits never expire. On activation you get 100 verifications to try it without paying.

Does my list stay stored with you?

The verdicts stay in your account, so you don't pay twice for the same address and so invalid ones stay blocked at send time. The list is yours and exports to CSV whenever you want. We don't sell it, don't share it, and don't use your list for anything beyond verifying what you asked.

How long does a 10,000 list take?

Minutes. Most addresses are resolved by the cheap layers, without spending a connection; only a fraction requires talking to the recipient's server. You follow the progress live and can download partial results.

Is there a free email verifier?

To try it, yes: when you activate AIMailCheck you get 100 verifications at no cost. After that you buy credit packs that never expire, with no monthly fee.

What email bounce rate is acceptable?

The lower the better. From around 2% bounced emails, providers start distrusting the sender and filtering messages to spam. That's why it pays to validate your list before every campaign.

How to verify an email address exists before you send

Addresses that don't exist make email bounce, and bounces drag down delivery for everything you send next. Verifying first costs less than repairing your sender reputation later.

Email validation: why a dirty list sends everything to spam

From roughly a 2% bounce rate, mailbox providers start routing what you send to spam, even for people who wanted it. Validating the list before the send removes the addresses that would bounce.

How to check if an email exists without sending a message

The verifier talks to the recipient's mail server and asks whether that mailbox accepts mail, then hangs up before sending anything. Nobody receives anything and nobody is notified. Each address comes back with a verdict, a reason and a score.

Email list cleaning: what to do with each result

Valid addresses go to your send; invalid ones leave the list and stay blocked on future sends. Risky ones — common at Gmail, Outlook and large companies, which don't answer on purpose — should only get mail if they've engaged with you before.

Find out what's in your list

100 free verifications on activation. No card, no subscription — and Alice explaining every result.

Start free → See details

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