Guides

Practical guides to stopping form spam

What actually blocks automated submissions, what quietly stopped working, and how to tell which problem you have. Written to be useful whether or not you ever use SpamKill.

Pillar guide
How to stop form spam without a CAPTCHA
Seven methods that block automated submissions without asking your visitors to prove anything — ranked by how well each one actually holds up.
 Guide
How to stop contact form spam
An ordered fix list, from the ten-minute changes to the point where per-trick defences stop being enough — plus the fixes that feel productive and are not.
 Explainer
Why bots fill in your forms
Fake submissions are not random noise. The five kinds, what each one wants, and what they cost you in automations, analytics and CRM.
 Explainer
Honeypot vs CAPTCHA
Two answers to the same question with opposite costs. What each catches, what it misses, and the hiding mistake almost everyone makes.
 Sourced
Is reCAPTCHA accessible?
What WCAG actually requires of a CAPTCHA, why the W3C says every type fails some users, and what an accessible alternative looks like.
 Sourced
What CAPTCHAs actually cost in conversion
What the published research does and does not show — and why most conversion percentages you will read online trace back to nothing.
 Comparison
Turnstile vs reCAPTCHA
An even-handed comparison of two products that are not ours. Turnstile wins for most sites — and both share a limitation neither can fix.
 Guide
Bot leads in your CRM
How to tell which records are automated, what they cost in rep time and distorted forecasts, and why one of those costs compounds on its own.
 Guide
Email list bombing
When your signup form is the weapon and your sending domain takes the damage. How to spot it and what actually stops it.
 Guide
Fake webinar registrations
Fakes inflate registrations and depress show-up rate at the same time, so teams fix the wrong problem. What it costs and how to stop it.

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