Automatically Clean Your Email List & Stop Bots
The easiest way to keep your email list clean and safe — so every email sent drives real results.
Start protecting your email list today with ListDefender
Clean up the Chaos in Your Email Marketing
Forget manual cleaning, fake signups, and messy tool stacks. ListDefender gives you one simple way to protect your list and grow with real subscribers.
Forget Manual Cleaning
Tired of juggling spreadsheets just to clean your list?
Stop Bots and Fakes
Sick of bots flooding your forms and ruining your engagement & reputation?
FormDefender stops them cold before they hit your system.
One Tool, Not Five
Wasting money stitching together multiple tools?
ListDefender replaces them all with one seamless platform.
Trusted by Entrepreneurs Who
Rely on Email Marketing
Integrates seamlessly with your favorite platforms
How It Works
From Simple Setup to Results in Minutes
Connect Securely
Connect with your email marketing system in seconds. No manual uploads/downloads. No tech headaches.
Set Your Scan Rules
Choose the level of protection that fits your business. Clean your list, focus on real engagement, and keep fake signups out automatically.
See Your Results
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.
Everything You Need to Protect Your List — In One Tool
Three layers of protection that keep your list clean, safeguard your forms, and make sure your emails reach real people who buy.
List Cleaning
Keep your list healthy and your deliverability strong — without lifting a finger.
- Automatically clean your list with regular SmartScans
- Catch bad or non-existent addresses before they cause problems
- Protect your sender reputation and inbox placement without manual effort
Form Protection
Only let the right people onto your list — and block the junk before it ever hits your CRM.
- Block bots, fake and junk signups in real time
- Catch typos, role-based addresses, and throwaway/free emails before they get in
- Ensure your list grows only with genuine subscribers who can actually buy from you
Engagement Tracking
Focus on the subscribers who engage — and stop wasting time on the ones who don’t.
- Auto-tag every contact based on opens, clicks, and activity
- Spot and suppress unengaged contacts before they hurt deliverability
- Focus your efforts on the subscribers most likely to open, click, and buy
Ready to Protect Your Email Deliverability?
Join thousands of marketers who've improved their email performance with ListDefender. Protect your list today.
What Our Customers Say
"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!"
"It's EXACTLY enough info for the clients to feel informed! It takes me 30 seconds to forward it and I gain a ton of authority with the client."
Starting At Only $20/mo
Simple, transparent pricing. Only pay for as much as you need.
See our partner programs
Ready to Protect Your Email Deliverability?
Join thousands of marketers who've improved their email performance with ListDefender. Protect your list today.