A clean email list.
In just a few minutes.
Upload your list, tick what you want gone, and get a clean one back in minutes. You also get a plain report of what was removed, and why.
Illustrative example report — sample numbers from a demo run, not a customer result.
A dirty list costs you money
Three things that quietly wreck your results. ListGuard handles all of them.
Bounces damage your reputation
Too many rejected emails make you land worse at Gmail and Outlook over time.
You end up in the spam folder
Dead and fake addresses drag your whole campaign down, even the mail to your good contacts.
You pay for nothing
You send (and pay) for addresses that never existed or never open.
Everything in one pass
No more stitching separate tools together. One run, one clean list.
Upload your list(s)
One or more CSV files at once. We find the email column for you.
Tick what you want to clean
From duplicates to dead domains. You decide, in plain language.
Download your clean list + report
Plus a clear overview of everything that was removed and why.
11 tools, one place
Everything the pipeline does, you can also run on its own, whenever you just need one thing.
Spam Scanner
Scan your email content for spam words and get a score.
DNS Health Check
Check your domain's SPF, DMARC and MX records.
Email Syntax Checker
Check whether addresses are validly formatted.
Deduplicator
Remove duplicate addresses from your list.
File Splitter
Cut oversized lists into manageable chunks.
File Merger
Merge multiple lists and dedupe in one go.
Filter & Clean
Drop addresses containing unwanted words.
Suppression Matcher
Remove anyone who already unsubscribed.
Bounce Analyzer
Sort hard bounces from soft bounces.
Disposable Detector
Remove temporary throwaway addresses.
Role Address Filter
Get rid of info@, support@ and admin@.
Bring your own verification power
Already pay for ZeroBounce or Hunter.io? Connect your API key and ListGuard runs your list through real mailbox verification, on top of every other check.
Your data never leaves Europe. And we never keep it.
Your email list is one of the most sensitive things you own. We treat it that way, from the second you upload it.
Core cleaning never stores your addresses
Your email list is never written to our database during cleaning. We keep the counts, not your contacts. The documented exception: suppression lists you explicitly save, so unsubscribed addresses can be flagged.
Processed in Europe by default
Your file is processed on European infrastructure. The only exception: if you connect ZeroBounce or Hunter.io, the addresses you choose to verify go to that provider.
Deleted right after cleaning
The moment your clean list and report are ready, your uploaded file is removed from our systems.
No third parties by default
Core cleaning runs on our own machines. Addresses only leave our infrastructure when you explicitly enable external mailbox verification.
Encrypted from the first byte
Every upload travels over a secure, encrypted connection, start to finish.
Privacy by design
We built ListGuard around European data-protection principles from day one, not as an afterthought.
The only things we hold on to are the numbers — how many addresses were cleaned, and why — plus suppression lists you explicitly save. Never your uploaded list itself. Full details on the security page.
Simple pricing. No surprises.
Start free. Upgrade when you need more volume.
- ✓ Up to 1,000 rows per run
- ✓ 5 runs per month
- ✓ 1 DNS check per day
- ✓ All core tools
- ✓ Up to 50,000 rows per run
- ✓ Unlimited runs
- ✓ 5 DNS checks per day
- ✓ All tools
- ✓ Priority support