What is SpamBlock?

SpamBlock is a privacy-focused form backend and spam detection service that protects web forms from spam submissions. It consists of two main products:

SpamBlock Pixel

The Pixel is a lightweight JavaScript script that you add to your website. It automatically intercepts form submissions and analyzes them for spam signals before they reach your backend.

Key features:

• One script tag, works immediately
• Works with any form
• No account required
• 13+ spam detection signals
• Free forever (1000 checks/day per IP)

Spam assessment data is passed back as additional form data which you can use to determine when to block or allow submissions in your frontend, or as part of your backend logic to determine if the submission is legitimate or not.

Hint: the lack of form assessment data would indicate that the form was submitted before the pixel could load, which is a strong indicator of a bot submission.

SpamBlock Forms

Forms is a simple, serverless form backend that lets you easily add custom forms to any website—no backend code needed. Just send form data to your unique endpoint, and Forms handles submissions, spam filtering, and notifications to your email, webhook, or other destinations.

Key features:

• Additional backend spam protection
• Analytics dashboard
• Webhook integrations
• Email notifications
• Data export
• Free for up to 100 submissions per month

How It Works Together

You can use Pixel and Forms together:

• Pixel provides protection to any form on any website, regardless of forms provider
• Forms provides an easy to use, easy to configure, secure hosted forms solution
• Both share the same spam detection engine