MDL Spam Filter
MDL Spam Filter is a WordPress plugin that blocks contact form spam server-side. It protects submissions for Contact Form 7, WPForms, Gravity Forms, Elementor forms, and any other contact form without adding CAPTCHA or visitor friction.
The plugin scans front-end submissions before any form handler runs. It applies keyword filtering, a honeypot field, rate limiting, a language guard, and optional AI spam detection using Anthropic Claude, OpenAI GPT, or any OpenAI-compatible provider. When spam is detected the submission is blocked silently: no email is sent, including admin notifications or autoresponders, and nothing is written to form entries or logs unless configured by the user. Nothing is stored or emailed until a submission passes all filters.
It is delivered as a free plugin available through the official WordPress.org directory. Installation and updates occur through the standard WordPress plugin management interface. The tool addresses the problem of unwanted contact form spam reaching inboxes and databases while maintaining a clean experience for legitimate users.
FreemiumWebSelf-hosted
Overview
6 featuresIn the Business & Operations space, MDL Spam Filter takes a focused approach. It focuses on preventing spam submissions from reaching inboxes and databases on WordPress contact forms without using CAPTCHAs. MDL Spam Filter is a B2B product aimed at wordPress site owners and developers. A free plan is available. It runs on the web, and it can be self-hosted.
Monday Digital Lab builds and maintains MDL Spam Filter, and it first shipped in 2026. Key capabilities include Keyword Filtering, Honeypot Protection, and Rate Limiting. The interface is available in English and Spanish.
Summary written by a language model from the project’s public pages.
- Keyword Filtering
- Honeypot Protection
- Rate Limiting
- AI Spam Detection
- Language Guard
- Form Integration
Tags
anti-spamcontact-form-protectionhoneypotai-spam-filterform-security
AI capabilities
Text
Inference: Cloud API
Built with & integrations
AI providers
anthropicopenai
Runs on
BrowserSelf-hosted
Detected from
- openai
- .openai in the HTML
- anthropic
- .anthropic in the HTML
Trust & compliance
Verified signals
Legal
Indexing history
1What PulseGate has recorded for this listing
Frequently asked questions about MDL Spam Filter
- What does MDL Spam Filter do?
- MDL Spam Filter focuses on preventing spam submissions from reaching inboxes and databases on WordPress contact forms without using CAPTCHAs. It is catalogued under Business & Operations on PulseGate.
- Who should use MDL Spam Filter?
- MDL Spam Filter is a B2B product built for wordPress site owners and developers.
- Does MDL Spam Filter have a free plan?
- Yes — there is a free tier, with paid plans for advanced use.
- What platforms does MDL Spam Filter run on?
- MDL Spam Filter runs on the web. It can also be self-hosted.
- Is MDL Spam Filter still active?
- Unverified. MDL Spam Filter has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
- Who develops MDL Spam Filter?
- MDL Spam Filter is developed by Monday Digital Lab.
- When did MDL Spam Filter launch?
- MDL Spam Filter first shipped in 2026.
- What languages does MDL Spam Filter support?
- The interface is available in English and Spanish.
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