Anti-Spammer Master

Developed by

While concrete5’s built-in Google Recaptcha implementation is convenient, Anti Spammer Master takes form spam contro…


Anti-Spammer Master for concrete5 is a robust all-in-one spam prevention tool to stop spam dead in its tracks.

No third-party tracking, no privacy-rights breach, no private data saved, no monthly fee, just full-on anti-spam protection.

What kind of spamming attempts can you block?

  • Block spam words and expressions in multiple languages found in public denylists
  • Block spam words and expressions found in concrete5 denylist
  • Block disposable emails
  • Block invalid emails
  • Block URL shortening services
  • Limit the number of links allowed in messages
  • Block Forms submitted too fast by bots (check the tutorial)
  • Honeypot integration (check the tutorial)
  • Block bots hosted on Amazon AWS servers
  • Block bots using anonymous TOR IPs
  • Block multiple submission in a short time
  • Filter for HTML content
  • Filter for BB code
  • Block known exploit attempts
  • Check minimum length and number of words of messages
  • Block IPs found in public denylists
  • Block IPs blacklisted by concrete5
  • Check for specific HTTP headers
  • Block User Agents found in public denylists
  • Block Referrers found in public denylists

Reporting & Statistics

You will get 2 reports letting you know how many spamming attempts were blocked in total and by type.

  1. The first report shows you the figures since you first installed the package
  2. The second report shows you figures for the last 31 days.

Here's a screenshot showing you the kind of results I got on my own website

Spam statistics from

Where will spam blocking work?

Anti-Spammer Master will work with:

  • The core Express Form block
  • The core Legacy Form block
  • The core Conversations block
  • Private messages
  • Any third party form system implementing concrete5 Spam system

No anti-spam system is 100% foolproof. Anti-Spammer Master will do an excellent job blocking most automated spam and even some manual spam but your mileage will definitely vary.

Current Version: 1.0.4
Fully Translatable: Yes
Needs External Libraries: No
Compatible 8.3.1+
License: Standard
Support Response: Replies to tickets every business day.
Support Hosted: On
Needs extra server permissions: No
Needs Internet: No
Marketplace Tests:
Passed Automated Tests
Passed PRB Review