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FormBnB offers multiple layers of spam protection to keep your forms secure.

Honeypot Field

The simplest spam protection. Add a hidden field that bots will fill out:
You can also configure a custom honeypot field name in your form settings.

reCAPTCHA

reCAPTCHA v2 (Checkbox)

  1. Get keys at google.com/recaptcha
  2. Enable reCAPTCHA in your form settings
  3. Add the widget to your form:

reCAPTCHA v3 (Invisible)

For invisible protection:

hCaptcha

Privacy-focused alternative to reCAPTCHA:

Cloudflare Turnstile

Cloudflare’s privacy-preserving CAPTCHA alternative:

Blocklists

Block specific emails, domains, IPs, or words in your form settings:

Work Email Validation

Require business email addresses by enabling “Require Work Email” in settings. This blocks common free email providers:
  • gmail.com
  • yahoo.com
  • hotmail.com
  • outlook.com
  • And 100+ more

ML Spam Filtering

Enable ML-based spam detection for advanced filtering. This analyzes:
  • Content patterns (crypto spam, phishing, etc.)
  • Email address patterns
  • Submission metadata
  • Link density
Configure the spam threshold (0-1) in your form settings. Higher values are more strict.

Rate Limiting

Prevent abuse with rate limiting: When rate limited, submissions return a 429 Too Many Requests error.