ListCheckup
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Everything in the box

There are no tiers of feature and nothing is locked behind a bigger pack. This is the whole product, grouped by the job it does for you.

Verify

The core job: is this address real, said plainly.

Bulk lists, priced before they run

Upload a CSV, have the address column picked for you or pick it yourself, and see the exact price before anything is spent. Most lists finish in minutes; big ones can be paused and resumed.

Five plain verdicts

Valid, Invalid, Risky, Catch-all, Unknown — every address gets a verdict, a confidence score, and a reason written in plain English rather than an SMTP code.

One address at a time

A single check from the dashboard when one address is the question — one credit, answered while you watch.

Three downloads per list

The clean list ready to send to, the annotated original with every verdict in place, and the removed rows on their own — whichever your platform wants.

A PDF report for every list

What was checked, what was found, and when — a report you can hand to a client, a colleague, or an email platform asking about your bounce rate.

Stay clean

A list decays whether you look at it or not. This is the part that looks.

Watched domains

We keep re-checking the domains from your finished lists, and tell you when one stops accepting mail — so a list you cleaned in March does not quietly rot by June. Included free.

A digest that respects quiet weeks

A summary of your activity on the weeks there is some, and silence on the weeks there is none. Cadence is yours to set.

Told when a list finishes

An email when a run completes, to whoever uploaded it — each person controls their own notifications.

Your period at a glance

A reports page with your last 7, 30 or 90 days — what was checked, what it found, and any watched domain that broke.

A bigger pack buys a better rate. It never buys a feature.

Automate

Everything the dashboard does, your code can do.

A REST API with honest keys

Check one address or a whole list from your own code. Keys are created and revoked in the dashboard, can carry an expiry, and respect team roles.

Webhooks

Signed, retried notifications to your endpoint when work completes — so your system learns a list finished without polling for it.

Built for AI assistants

An MCP server, so Claude and other assistants can price and run verifications for you — with the price always shown before anything is charged.

Bring your team

One account, several people, no shared password.

Invite as admin or read-only

Members sign in as themselves and act for the account — admins can upload and spend, read-only members can look. No password ever changes hands.

Revocation that actually revokes

Remove a member and their access falls immediately — signed-in sessions included. Roles can be changed the same way.

One balance, attributed work

The account holds the credits; every upload records who ran it, and the finished-list email goes to the person who did.

Your money, your data

The policies, since they are features too.

You only pay for answers

Credits never expire, unknowns are refunded, duplicates are charged once, and rows that are not addresses cost nothing. The pricing page holds the full promise.

Read the promise in full

Retention you control

Lists and results are kept 90 days by default — shorten it, or erase everything at any moment. Closing your account removes the rest.

Your data, exportable, in Europe

A whole-account export on demand, servers in the European Union, and a data processing agreement on request.

Refer and earn

Every account has an affiliate link: 20% of what a referred customer spends, redeemable as credits.

All of it, from the first free hundred.

The free 100 verifications a month come with every feature on this page — teams, the API, the report, the watched domains. Nothing unlocks later, because nothing is locked.

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