Verify your email list. Get back only the inboxes worth sending to.
Our email list checker validates tens of thousands of addresses per job — at up to 50,000 a minute. Every row comes back verdict-stamped with a confidence score you can actually act on.
No card · 100 free · GDPR
| Verdict | Confidence | |
|---|---|---|
| [email protected] | Valid | 0.98 |
| [email protected] | Valid | 0.97 |
| [email protected] | Catch-all | 0.55 |
| [email protected] | Typo | 0.04 |
| [email protected] | Disposable | 0.02 |
| [email protected] | Valid | 0.96 |
Upload to export in four steps.
No setup, no integrations to wire up first. Drag a file in and go.
Upload
Drop a CSV, XLS or XLSX — up to millions of rows. We auto-detect the email column and map the rest.
Verify
Watch live progress as we run 20+ checks at up to 50,000/min. Every row gets a verdict and a confidence score.
Grade & ask
Get an A–F deliverability grade — then ask the AI “is this safe to send?” for a plain-English answer.
Export
Download only the deliverable addresses, segmented by verdict — or push them straight back to your CRM.
50,000 a minute, graded on arrival.
Distributed SMTP probing chews through huge lists fast — then hands you a single A–F deliverability grade and the exact segments dragging it down. No spreadsheet to decode.
- Live progress — jobs you can pause and resume
- Catch-all risk graded, not just flagged
- Pay only for answers — Unknown rows are free
Watch the bounces vanish.
Every address comes back stamped Valid, Risky or Invalid with a real confidence score — no mystery meat, no fake green lights. Filter to deliverable-only and export in one click.
- Verdict + confidence on every single row, not a vague pass or fail.
- One-click clean export — keep every original column, segmented by verdict.
- Reduce bounces 95% — or your money back, in writing.
| Verdict | Confidence | |
|---|---|---|
| [email protected] | Valid | 0.98 |
| [email protected] | Valid | 0.97 |
| [email protected] | Catch-all | 0.55 |
| [email protected] | Typo | 0.04 |
| [email protected] | Disposable | 0.02 |
| [email protected] | Valid | 0.96 |
Every address, put through its paces.
We don't stop at syntax. Each email runs a full battery of validations before it earns a verdict.
Not a green light. An answer.
Twenty-plus signals collapse into one honest verdict and a 0–1 confidence score — shown, never faked. When a mailbox truly can't be determined, it's Unknown, and Unknown is free.
Syntax & format
RFC-compliant parsing catches typos, bad characters and malformed local parts before they ever leave your list.
Domain & MX
Confirms the domain resolves and actually has mail servers standing by to receive.
SMTP mailbox
Pings the mailbox itself to confirm it exists — not just the domain it lives on.
Spam traps
Flags pristine and recycled traps before they torch your sender reputation.
Disposable
Catches throwaway inboxes that never convert and quietly inflate your bounce rate.
Role accounts
Surfaces info@, support@, sales@ and other shared boxes you may want to drop.
Catch-all
Identifies accept-all domains and grades how risky each one really is — not just a flag.
Greylisting & retries
Handles deferrals intelligently so a slow server never gets misread as invalid.
Don't decode the result. Ask it.
When a job finishes, you don't get a wall of statuses to interpret. Ask the AI in plain English — “is this list safe to send?” — and get a graded answer plus the exact next move.
- Plain-English verdicts. What a catch-all actually means for your send, not a cryptic label.
- Recommended action. Send, suppress, or re-verify later — it tells you which and why.
- Filtered on demand.“Show me only the risky domains” — answered instantly.
| ✅ Valid | 23,636 · 77.5% |
| ❌ Invalid | 2,444 · 8.0% |
| ⚠ Catch-all | 192 · 0.6% |
| ❓ Unknown | 4,230 · 13.9% |
Whatever your list lives in.
Bring the file you already have. We map the email column automatically and keep every other column intact.
Comma or semicolon delimited
Modern Excel workbooks
Legacy Excel files
One address per line
Lists cleaned. Bounces gone.
We cut our bounce rate from 11.4% to 0.5% in a week. The AI explaining why each address was risky is the part our team actually loves.
The API drops straight into our signup flow. Fake and disposable emails never make it into the database anymore.
Half the price of the tool we left, and the inbox-placement testing paid for itself on the first campaign.
Good to know.
Clean your first list free.
Upload a file, watch it graded, and export only the deliverable inboxes — in under a minute. No credit card.