Bot form submissions pollute your pipeline, waste your reps' calls, and quietly skew every number your ad spend is judged on. SpamKill scores how each submission was filled in — 99.9% accuracy, invisible to real visitors, and a flagged real lead verifies in one step instead of being turned away.
30-day free trial, no credit card · Cancel anytime
Only the rare flagged visitor ever sees a verification step — everyone else sees nothing, and a flagged real person verifies in one step and comes through. Depending on your plan, you can also review what was blocked.
Bots don't find forms by accident — they hunt for them. Crawlers catalogue every publicly reachable form on the web, and forms wired to a CRM or an autoresponder get hit hardest, because those are the submissions that provoke a response. Once your form is on an operator's list, web form spam arrives on a schedule that has nothing to do with your traffic.
The visible junk is the cheap part. The expensive part is the fake form submissions that look plausible: a real-sounding name, a deliverable email address, a message just generic enough to get routed to a rep. Those don't get deleted — they get called, emailed, counted in conversion rates, and fed back into the ad platforms as if they were people.
This isn't hypothetical traffic. Our network screens 100M+ submissions, and you can watch what it's catching right now on the live form spam threat feed — the IPs, the fake names, the templated messages. If you're not sure how much of your own pipeline is affected, start with how to spot fake form submissions.
CAPTCHAs interrogate everyone to catch the few. SpamKill inverts that: capture first, decide after, bother almost no one.
Nothing gates the form. Real visitors fill it in and hit send exactly as before — no puzzles, no checkboxes, no friction on the traffic you paid to acquire.
SpamKill scores how the form was filled in — timing, movement, input cadence, device signals — at 99.9% accuracy. Solver farms can pass a puzzle for pennies; they can't cheaply fake being a person at a keyboard.
The rare flagged visitor verifies in one step and continues — a false flag never turns a real person away outright. Depending on your plan, you can also review what was blocked and flag false positives.
Comparing your options? See every CAPTCHA alternative, honestly ranked →
The spam you notice is the crypto pitch in broken English. The spam that costs money is the fake lead: plausible name, valid email, submitted through the same landing page your ads point at. It books nothing, answers nothing, and still gets counted — in your close rate's denominator, in your cost-per-lead, and in the conversion signals your ad campaigns optimize against. Teams running paid traffic on Facebook or Google often meet form bot protection for the first time only after noticing their "leads" stopped answering the phone.
Data checks can't catch these, because the data is fine — it's the submitter that's fake. Behavioral scoring catches what validation can't: the form was filled in a way no person fills a form. The flagged submission is blocked with the reason attached — and depending on your plan, you can see exactly what almost reached your reps. What happens when these leads get through anyway? That's covered in what bot leads do inside a CRM.
SpamKill sits on the form itself, so it protects whatever the form feeds: WordPress, HubSpot, HighLevel, ActiveCampaign, Keap, custom builds. Your workflows, tags, and UTMs stay exactly as built — the only change is that bots stop reaching them. See the full list on the integrations page, or the platform-specific breakdowns for HighLevel form spam and high-volume funnels.
Because your form is publicly reachable. Crawlers catalogue public forms the same way search engines index pages, and once a form is on a spam operator's list, bot form submissions arrive on a schedule regardless of your site's size. Each one costs the spammer nothing and costs you a junk record in your pipeline.
SpamKill decides after capture instead of gating before it. It scores how each submission was filled in — timing, movement, input cadence, device signals — at 99.9% accuracy. Real visitors see nothing. The rare flagged visitor verifies in one step and continues, and depending on your plan you can review whatever was blocked.
Yes — that's the point of behavioral fake lead detection. A bot can buy a plausible name and a working email address for pennies, but it can't cheaply fake the way a person actually fills in a form. Scoring the behavior instead of the data catches submissions that would sail through any keyword or email-validity check.
They verify in one quick step and continue — the flag never turns a real person away outright. Depending on your plan, you can also review everything that was blocked and flag false positives. That challenge-first design is why SpamKill can run at strictness levels a delete-on-suspicion filter never could.
No. Two gates on one form give your visitors the friction of both and the accuracy of neither — the CAPTCHA keeps turning real people away before SpamKill can capture and verify them. Swap SpamKill in during the trial — blocked-lead review included — and judge it by what the blocked queue catches; a flagged real person can always verify straight through, so the swap risks nothing. Site-level protection at your CDN sits at a different layer and can stay.
Put SpamKill on your forms, take the old gate off, and watch the blocked count climb while real leads keep landing. 30-day free trial, no credit card.
Start Free Trial