A bot fills your form and your account does exactly what you built it to do: creates the contact, fires the workflow, sends the text, opens the pipeline card. SpamKill captures every submission into quarantine, decides at 99.9% accuracy, and passes only clean leads to HighLevel — invisible to real leads, and spam never enters your list, so it never starts a workflow or spends a send.
Works with HighLevel through a SpamKill Form that sends every clean lead straight into HighLevel — plus WordPress, HubSpot, Keap, ActiveCampaign, and custom stacks.
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Only the rare flagged visitor ever sees a verification step — everyone else sees nothing, and a real person who is flagged verifies in one step and comes through. Depending on your plan, you can also review what was blocked.
Because the record isn't sitting still — it's plugged into everything you automated.
Bots don't stumble onto your pages — they hunt for them. What a crawler is looking for is a form that produces a reaction, because the reaction is the receipt: an autoresponder lands, a confirmation text arrives, a booking is held. A form wired to HighLevel reacts more than most, which makes it worth revisiting rather than hitting once.
It's also easy to identify. Funnels, surveys and booking pages built on a shared platform carry consistent markup by design — that's what lets you rebuild a page in an afternoon — and the same consistency lets an automated crawler recognise thousands of them without looking at any of them. Once one URL is catalogued, it circulates through the lists these operations trade, and the volume stops being random.
The submissions have also stopped looking like spam. Generative tools fill forms with a plausible name, a coherent message and a real-looking company, so the old tells are worth less than they were. What still gives them away is the repetition: the same message bodies turn up on thousands of unrelated forms, which is exactly the pattern behind our public spam message blacklist.
Running the platform for clients rather than for your own business? The cost multiplies across sub-accounts: the same junk gets cleaned in every one, and the client sees the inflated numbers before you do. See how agencies roll SpamKill out per client.
Three approaches businesses actually try — and what each one really costs.
You can add a CAPTCHA to forms and surveys, and it will stop some bots. But the page you're adding it to was built to convert, and every visitor who meets that puzzle on paid traffic was a click you already bought. Solver services clear CAPTCHAs for pennies, so the submissions that cost you the most get through anyway — and what the gate does turn away is never recorded. You cannot review a lead that was never captured.
A condition in the workflow, a tag, a suppression list, a Monday-morning pass through the contact list — all of it catches some junk once it's in. None of it undoes the part that already happened: the send went out, the slot was held, the report absorbed it. Filtering after the automation runs means paying the cost and then paying again to hide it.
HighLevel draws its forms with a script, so SpamKill can't protect them in place: you rebuild the form once as a SpamKill Form and swap it in for the HighLevel form. Every submission is then captured into SpamKill's own quarantine first — not into your account. There it scores how the form was filled in — timing, movement, input cadence, device signals — at 99.9% accuracy across 100M+ submissions, and sends clean leads to HighLevel as contacts, mapped to the fields you choose. Real visitors see nothing and hit submit. The rare flagged visitor gets one step to redeem themselves and continues, so a false flag doesn't cost you the lead, while bots fail the check and never enter your account at all — no contact created, no workflow fired, no send spent, nothing to clean up on Monday. One thing to check when you switch: workflows triggered by a HighLevel form submission need a contact-created or tag trigger instead. Depending on your plan, you can review the blocked queue and flag anything wrongly caught. The HighLevel setup guide walks through it in about ten minutes.
Swap it in during the 30-day free trial, no credit card and judge what it catches on your own traffic. Don't add a CAPTCHA to the SpamKill Form — your visitors get the friction of both, and the gate keeps turning real people away before anything can capture and verify them. For how invisible detection works across any stack, see how SpamKill protects forms, or compare every approach in stopping form spam without a CAPTCHA, ranked.
Each client domain is licensed and configured on its own, with one of three strictness levels. Every month SpamKill emails you the numbers per client domain — total submissions, blocked, passed, and the cleanup time that never had to happen. Forward it as-is, or fold it into your own reporting.
Sample of the monthly report email, shown with demo data. Time saved is an estimate.
Pilot on the 1–3 client domains where the spam is worst. Partner pricing runs up to 55% off client licenses, on a single invoice. Apply for partner access →
Because it is wired to something that reacts. Crawlers look for forms that sit in front of a CRM and an automation platform, and they confirm a hit by the reply that comes back — the autoresponder, the text, the booking confirmation. Funnels, surveys and booking pages built on a shared platform have recognisable markup, so they are cheap to find at scale, and once one crawler catalogues a URL it circulates through the lists these operations trade.
Yes, if a workflow is set to greet new leads. The automation cannot tell that the contact is not a person, so the text and the email go out and the sends are consumed exactly as they would be for a real enquiry — except nobody reads them. That is the part businesses underestimate: in most tools a junk submission is a row to delete, but here it spends something the moment it lands.
HighLevel can put a CAPTCHA on forms and surveys, and it will stop some bots. But it adds a visible step to pages you built to convert, solver services pass CAPTCHAs cheaply, and whatever the gate turns away leaves no record at all — a real customer who gave up halfway looks identical to a bot that was stopped, which is to say neither one appears anywhere.
SpamKill decides after capture instead of gating before it: every submission is captured into SpamKill's quarantine first, not into your account. It's held just long enough to score how the form was filled in — timing, movement, input cadence, device signals — at 99.9% accuracy across 100M+ submissions, then passed to HighLevel only if it's clean. Because HighLevel draws its forms with a script that can't be protected in place, you rebuild the form once as a SpamKill Form and swap it in for the HighLevel form; clean leads then arrive in HighLevel as contacts, and a spam submission never becomes one. Real visitors see nothing and hit submit. The rare flagged visitor gets a one-step chance to redeem themselves and comes straight through, so a false flag doesn't cost you the lead, and depending on your plan you can review everything that was blocked.
Mostly not, with one thing to check first. Clean leads reach HighLevel as contacts, with each form field mapped to the HighLevel field you choose — custom fields included, after a one-click confirm. Workflows triggered by a HighLevel form submission won't fire, because the lead now arrives through SpamKill rather than the HighLevel form: start those workflows when a contact is created or a tag is added instead, and have SpamKill add that tag to every new lead. The setup guide walks through the mapping step by step.
No. The SpamKill Form takes the HighLevel form's place on your page, so its CAPTCHA goes with it — and don't add a different one to the SpamKill Form. Your visitors would face the friction you were trying to remove, and the gate would turn real people away before SpamKill could capture and verify them. The swap is safe precisely because a flagged real person can always verify straight through. Site-level bot management at your CDN works at a different layer and can stay.
Yes — that's the recommended rollout for agencies. Pilot on one to three client domains where the spam is worst, set a strictness level per client, and compare blocked versus passed per domain in the monthly report before rolling it out further.
Yes. Protection is licensed per domain, so each client is configured on its own — you pick one of three strictness levels for the client whose funnels get hammered without touching the client whose traffic is clean. The monthly report breaks the numbers out the same way, per client domain, so you can tune one account without guessing at the effect on the rest.
Swap a SpamKill Form in for the HighLevel form that generates the most junk and watch what it blocks for a month. Flagged real leads verify themselves through, so the swap doesn't cost you enquiries. Thirty days, no card, from $29/month after.