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.
Three things that quietly wreck your results. ListGuard handles all of them.
Too many rejected emails make you land worse at Gmail and Outlook over time.
Dead and fake addresses drag your whole campaign down, even the mail to your good contacts.
You send (and pay) for addresses that never existed or never open.
No more stitching separate tools together. One run, one clean list.
One or more CSV files at once. We find the email column for you.
From duplicates to dead domains. You decide, in plain language.
Plus a clear overview of everything that was removed and why.
Everything the pipeline does, you can also run on its own, whenever you just need one thing.
Scan your email content for spam words and get a score.
Check your domain's SPF, DMARC and MX records.
Check whether addresses are validly formatted.
Remove duplicate addresses from your list.
Cut oversized lists into manageable chunks.
Merge multiple lists and dedupe in one go.
Drop addresses containing unwanted words.
Remove anyone who already unsubscribed.
Sort hard bounces from soft bounces.
Remove temporary throwaway addresses.
Get rid of info@, support@ and admin@.
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 email list is one of the most sensitive things you own. We treat it that way, from the second you upload it.
Your actual email list is never written to our database. We keep the counts, not your contacts.
Your file is processed and backed up on European servers only. Nothing is copied to servers in other countries.
The moment your clean list and report are ready, your uploaded file is removed from our systems.
The cleaning runs on our own machines. We don't hand your addresses to outside services.
Every upload travels over a secure, encrypted connection, start to finish.
We built ListGuard around European data-protection principles from day one, not as an afterthought.
The only thing we hold on to are the numbers: how many addresses were cleaned, and why. Never the addresses themselves.
Start free. Upgrade when you need more volume.