Clean your email list, stop fake sign-ups, and protect your sender reputation — all automatically
Start protecting your email list today with ListDefender
If you’re like most entrepreneurs, your list includes bots, fake leads, and cold contacts that drag down your email deliverability. ListDefender cleans, protects, and re-engages so your emails actually reach real people.
Tired of juggling spreadsheets just to clean your list?
Sick of bots flooding your forms and ruining your engagement & reputation?
FormDefender stops them cold before they hit your system.
Wasting money stitching together multiple tools?
ListDefender replaces them all with one seamless platform.
Works with the Tools Small Businesses Already Use
ListDefender connects directly and securely with ActiveCampaign, HighLevel, and Keap
so you can clean your lists, protect your forms, and improve engagement automatically
From Simple Setup to Results in Minutes
Connect with your email marketing system in seconds. No manual uploads/downloads. No tech headaches.
Choose the level of protection that fits your business. Clean your list, focus on real engagement, and keep fake signups out automatically.
See your list's health at a glance with a clear dashboard of scan results and form protection details. Every contact is automatically tagged in your CRM so you always know who's safe.
Three layers of protection that keep your list clean, safeguard your forms, and make sure your emails reach real people who buy.
We automatically verify and clean your email list — removing invalid, disposable, and low quality addresses so you only send to real subscribers who can actually receive your emails.
ListDefender blocks bots and fake sign-ups at the source. Real-time email validation keeps bad data out of your CRM so your list stays clean from the moment someone fills out a form.
We track how subscribers interact with your emails and identify both unengaged contacts and those starting to go cold — so you can suppress the inactive ones and re-engage the rest.
Join thousands of marketers who've improved their email performance with ListDefender. Protect your list today.
"Welp...I happened to notice some weird stuff going on with contact id's. We've spanned hundreds already this morning, which makes no sense. So I look at how many spam submissions have already been filtered today. Already 2k just this morning. Nearly 100k in the past 30 days. Holy crap. Thanks so much for building this tool!"
"ListDefender Saved Our Business! Our email deliverability plummeted and our business was slowly being choked out and no one could identify what was going on. ListDefender identified the issue immediately and stopped the bots, removed the bad accounts, and got us back on track. What ListDefender accomplished in hours, Klean13 and multiple tech agencies couldn't do at all. We won't run our business without it again."
"I do want to say, it is STAGGERING the amount of bots ListDefender is catching....lol. Look at this image with the sheer number and you can see the list of bot submissions. We are in the middle of a big promo and generating a lot of leads and WOW, just WOW!"
"ListDefender has given us a clear & accurate view of the contacts in our CRM. It's helped protect our reputation by identifying bots and reducing spam complaints, keeping our deliverability strong and our lists healthy. Maintaining this level of visibility and control used to be nearly impossible; now I couldn't imagine operating without it."
Simple pricing for small businesses - starting at just $20/month.
Start cleaning and protecting your email list today!
Quick answers to the most common questions small businesses
ask about improving email deliverability.
Join thousands of marketers who've improved their email performance with ListDefender. Protect your list today.
