Webflow provides several built-in methods to prevent form spam:
Enable Cloudflare Turnstile spam protection:
Go to Site settings > Apps & Integrations
Locate and enable Cloudflare Turnstile
This feature uses AI to analyze mouse movements and inputs to block bot submissions
Enable spam filtering:
Located in the same section as Turnstile
Automatically checks all form data to filter out spam submissions
Works across all forms on your site
For additional protection, you can implement a honeypot technique by adding a hidden form field that only bots can see and fill out. When this field contains data, you can automatically filter out the submission as spam. You can find a detailed implementation guide here: honeypot technique.
Hopefully this helps! If you still need assistance, please reply here so somebody from the community can help.
Check out Mike Pecha’s tutorial on how to use FormSpark and BotPoison for Webflow spam protection. I’ve used it on a few Webflow projects and my clients are not getting spam. Tutorial Link