SMTP · MX · DNS · disposable

Clean your
email list.

Remove invalid, disposable, and risky addresses in minutes.

Results before payment€1 / 1,000 emailsFiles deleted after 24h (GDPR)
Analyze my emails →Automatic analysis →
validate.csv
validriskyinvalid
sarah.chen@shopify.commx + smtp ok
mike@gmial.comtypo → gmail.com
team@startup.iomx + smtp ok
noreply@catch-all.cocatch-all server
temp@mailinator.comdisposable
ana.garcia@empresa.esmx + smtp ok
GDPR compliantFiles deleted in 24hSMTP-verifiedNo signup to try

Upload your CSV

Import your list without size limits. CSV, TXT, direct paste, or via Mailchimp/Brevo/Klaviyo.

Drag your CSV file here
or click to select · CSV or TXT · No size limit

Capabilities

Everything you need to clean a list

BULK

Bulk cleaning

Upload CSV/TXT or paste — no size limit. Async pipeline handles millions of rows.

CHECK

Free single check

Verify one address instantly, no account needed. 10 free checks per day.

API

REST API

Validate at signup or inside your workflows. Simple keyed endpoints, JSON in and out.

SCORE

Quality score /100

Every list gets a deliverability score with a clear valid / risky / invalid breakdown.

DETECT

Disposable & catch-all

Flags temporary inboxes, role addresses and catch-all domains automatically.

SYNC

CRM integrations

Import and export with Mailchimp, Brevo and Klaviyo in a few clicks.

PIPELINE

Four checks on every address

01→

Syntax

RFC format, typos and malformed addresses caught before anything else.

02→

MX / DNS

Confirms the domain exists and can actually receive mail.

03→

SMTP

Asks the mail server whether the mailbox exists — without sending anything.

04

Disposable & catch-all

Cross-checked against throwaway providers and known spam traps.

Why it matters

Why clean before you send

Lower bounce rate

Stay under 2% to avoid throttling from Gmail, Outlook and Yahoo.

Protect sender reputation

High bounce rates get your domain blacklisted. Clean lists keep you trusted.

Cut ESP costs

Most providers bill per contact. Removing dead addresses lowers your bill.

Reach the inbox

Better engagement metrics mean better inbox placement, not the spam folder.

THE COST

What a dirty list really costs you

Sending to dead addresses isn't just wasted effort — it actively damages your account.

Blacklisting

A bounce rate above 2% gets your domain throttled or blocked by Gmail, Outlook and Yahoo — even your good emails land in spam.

Wasted budget

Most ESPs bill per contact. Every dead address is money paid to email nobody.

Lost reputation

Sender reputation takes months to build and days to wreck. One bad send can undo it.

Estimate what it costs you →

INTEGRATIONS

Fits your stack

Connect natively via CSV import/export, or plug EmailClean into anything through Zapier, Make and our REST API.

MailchimpMailchimp
BrevoBrevo
HubSpotHubSpot
MailgunMailgun
ZapierZapier
MakeMake
Google SheetsGoogle Sheets
AirtableAirtable
ShopifyShopify
WordPressWordPress
See all integrations →

Built for trust

GDPR compliant
Files auto-deleted after 24h
EU infrastructure (Cloudflare)
Your data is never resold
TLS 1.3 encryption in transit
Payments secured by Stripe · Infrastructure on Cloudflare
StripeCloudflare

Try it with zero risk

50 valid emails free — before you pay anything
See the full report and score before payment
50% money-back if your list was already clean
Files deleted in 24h — GDPR compliant
No account, no card to start
4checks on every address
50free valid emails, no card
24huntil your files are deleted
0data stored or resold

How it works

01

Upload your CSV

Import your list without size limits. CSV, TXT, direct paste, or via Mailchimp/Brevo/Klaviyo.

02

Automatic analysis

Syntax, MX, SMTP, blacklists. Quality score /100.

03

Pay and download

Results visible before payment. 50 valid emails free. CSV, XLSX or TXT.

🔒 Your files are automatically deleted from our servers after 24 hours (GDPR compliance). No data is stored or resold.

Questions before you start

How accurate is it?+
Syntax, MX, SMTP and disposable checks combined. Genuinely uncertain addresses (catch-all servers) are marked “risky” instead of guessed — so “valid” means valid.
What about catch-all domains?+
A catch-all server accepts any address, so no tool can confirm a single mailbox. We flag them as risky rather than padding your “valid” count.
How long does it take?+
A few minutes for 10k addresses, 20–40 minutes for 100k. Large lists run on an async queue with live progress.
What happens to my file?+
Permanently deleted 24h after processing, on EU infrastructure, and never resold.

See the full FAQ →

Clean your list in minutes

50 valid emails free. See the results before you pay.

Upload your list →