MUTE – Contact Form Spam Blocker Without CAPTCHA vs OpenPorte Spam Protection

SPAM NEVER STOPS. Start with your site. ── MUTE : Good for the world. Still getting spam through your contact form? Tons of junk flooding your inbox every day? Every day, countless WordPress site owners open their inbox to find it buried under fake inquiries, promotional garbage, and suspicious links — all submitted through their own contact form. Real customer messages get lost. You waste time sorting through it all. And no matter how many times you delete them, the spam just keeps getting sent again. MUTE is a spam blocker that puts an end to that — silently, automatically, and without making your real visitors jump through any hoops. The Problem You’re Probably Dealing With You’re not alone. These are the situations we hear about every day: You run a restaurant. Your contact form was meant for customer inquiries — but every time you open it, it’s full of scam emails and unsolicited sales links. Exhausting before the day even starts. You manage an e-commerce site. Your inquiry form is buried under spam every night. Real customer questions keep getting pushed to the back, and response times are slipping. You run a salon. A message from a new client gets lost among spam emails. By the time you reply, they’ve already moved on. You’re in sales at a small business. Every morning you sift through virus-laden links and shady solicitations just to find the one real lead that came in overnight. Your team has started ignoring the contact form because it’s mostly junk — sales pitches, phishing emails, fraudulent messages. Real customer needs go unanswered. You added CAPTCHA to stop the spam. Customers complained it was frustrating to use, inquiries dropped — and it’s not really helping anyway. The spam kept coming. You’ve tried other anti-spam plugins. Bots still slip through. The junk never stops. People keep trying to sell you SEO services and marketing tools through your contact form. Every morning, your inbox is full of sales pitches instead of real customer messages. Bots (automated programs) are constantly crawling the web, hunting for unprotected contact forms to exploit. Once they find yours, the fake submissions keep getting sent again and again. Standard solutions like CAPTCHA ask your real visitors to prove they’re human — that friction costs you leads. There’s a better way. How MUTE Solves It MUTE works as a silent spam blocker running in the background of your site. It detects bot behavior before a form is ever submitted — no puzzles, no checkboxes, no interruption for real visitors. How it works: A lightweight script loads automatically on every page of your site It monitors form activity using multiple detection layers — honeypot traps, behavioral analysis, and browser checks Bots are identified and blocked before their fake submissions ever reach your inbox Real visitors experience absolutely nothing different — their messages go through normally The result: your inbox contains only real inquiries from real people. What Changes After You Install MUTE The restaurant owner who dreaded opening the contact form can now check it without stress — every message there is a real inquiry. The e-commerce team that was always behind on replies can now respond to real customer questions quickly. Better response times, better service. The salon staff who worried about missing a new client’s message can now reply with confidence — every message that arrives is real. The sales team member who wasted every morning sorting through junk can now get to real leads immediately. More time for actual work. Staff who had lost trust in the contact form now check it every day — because they know what’s there is genuine. Real visitors never encounter a CAPTCHA. Your form stays smooth and easy to use. Your contact form does what it was always meant to do: connect you directly with real customers. Checking it goes from a chore to a natural part of the day. Key Features Silent spam protection — blocks bots automatically, with zero impact on real visitors No CAPTCHA required — no friction, no puzzles, no drop-off in form completions Works with popular form plugins — Contact Form 7, WPForms, Gravity Forms, Elementor Forms, Ninja Forms, Jetpack Forms, and more One-line installation — activate the plugin and it works. No settings to configure Live stats in your WordPress dashboard — see how many spam submissions have been blocked 14-day free trial — no credit card required to get started Requirements A free MUTE account is required. Sign up at mute-it.com — no credit card required for the 14-day free trial. External Services This plugin connects to an external service operated by Ryu-Raku Inc. to provide spam detection and account management features. Your site communicates with this service to enable spam blocking and to display your account status in the WordPress admin panel. No personal visitor data is collected or transmitted. Service URL: https://mute-it.com/en/ Terms of Service: https://mute-it.com/en/legal/terms/ Privacy Policy: https://mute-it.com/en/legal/privacy/

OpenPorte is a free and open-source plugin that protects WordPress forms from spam using a lightweight Proof-of-Work challenge instead of CAPTCHAs. The goal is to make spam expensive for bots while keeping the experience almost invisible for legitimate visitors and respecting their privacy. For site owners, OpenPorte offers an easy to configure and deploy modern spam protection under their control. For the site users, it offers an accessible, transparent and privacy-friendly alternative to CAPTCHAs. OpenPorte is built around the open-source ALTCHA widget. Some highlights: CAPTCHA-free spam protection Fully open source (GPL) Self-hosted – no mandatory external service Designed to be accessible and privacy-friendly Compatible with existing ALTCHA integrations Easy migration for users of ALTCHA Spam Protection v1 (≤ 1.26.3) For the list of contributors, refer to our GitHub project: Contributors. AI-assisted development AI-assisted project. Architecture, security decisions, and final review are mine; AI tools (Claude, Mistral, and others) help with drafting code, tests, translations, and documentation — without them, one person couldn’t keep this fork alive. Background The original ALTCHA Spam Protection WordPress plugin (v1) was open source (GPLv2). Its authors have since released a version 2/3 which is no longer open source. They no longer maintain the open source project and recommend that users migrate to v2/v3. See the official project at https://altcha.org for their offering. OpenPorte started as a fork and continues the v1 line as free software (GPLv2 or later) for users who want to stay on a fully open-source, self-hosted solution. It is a faithful fork: existing v1 installations can switch to OpenPorte and keep their settings (see Upgrading). Compatibility OpenPorte is backward-compatible with ALTCHA Spam Protection v1 plugin: Your existing settings are migrated automatically on activation. The [altcha] shortcode keeps working (alongside the new [openporte]). The altcha_* filters and actions keep firing as deprecated aliases. Custom API Mode has been verified against GateCHA, an open source server implementing the creation and verification of ALTCHA challenges. See the Deprecations section for the full list of compatibility aliases and what they map to. Upgrading From the original ALTCHA v1 plugin Deactivate the old ALTCHA plugin, then install and activate OpenPorte. Your existing configuration is detected and copied into the OpenPorte settings on first activation; the original ALTCHA settings are left untouched, so you can roll back to ALTCHA v1 without losing anything. Do not run both plugins at the same time. From ALTCHA v2/v3 If your site was already moved to ALTCHA v2/v3 (for example by the automatic 3.0.0 update), your original v1 settings are normally still in the database: the v2/v3 upgrade neither migrates nor removes them. Deactivate ALTCHA, then install and activate OpenPorte — it finds and imports the v1 settings, even when the v1 plugin itself has long been deleted. Settings made in v2/v3 are not read. Deprecations The following ALTCHA-era identifiers are kept as aliases for backward compatibility and are scheduled for removal in a future release: The [altcha] shortcode — use [openporte]. The altcha/v1 REST namespace — use openporte/v1. The altcha_* filters and actions — now firing through WordPress’ deprecated hook mechanism; use the openporte_* equivalents. The AltchaPlugin class and the ALTCHA_VERSION / ALTCHA_WIDGET_VERSION constants — use OpenPortePlugin and the OPENPORTE_* constants. Integrations targeting paid-only third-party plugins; affected users should migrate to the official ALTCHA v2/v3 plugin. The “Custom HTML” integration (auto-configuration of hand-written tags) — place the [openporte] shortcode instead. You can re-enable it for now under Settings → OpenPorte → Integrations. Privacy No cookies, no tracking OpenPorte prioritizes user privacy by avoiding the use of cookies and fingerprinting techniques. No external service This plugin remains fully contained within your WordPress installation, eliminating any reliance on external services. Modes of Operation OpenPorte verifies submissions in one of two modes, selected in the settings (API Mode): Self-hosted (default) — a proof-of-work challenge is issued and verified by your own WordPress site through the REST API. Fully self-contained, with no external service and no additional setup beyond enabling the integrations you need. Custom — point the Challenge URL at your own ALTCHA-compatible backend (for example a self-hosted ALTCHA Sentinel, or GateCHA). Submissions are verified with your site’s shared secret. The paid altcha.org regional SaaS classifier offered by earlier versions has been removed; both remaining modes are free and self-hostable. REST API This plugin requires the WordPress REST API. If you are using any “Disable REST API” plugins, ensure that the endpoint /altcha/v1/challenge (marked for deprecation) and /openporte/v1/challenge are allowed. Supported Integrations CoBlocks Contact Form 7 Elementor Pro Forms (deprecated — paid plugin, see Deprecations) Formidable Forms Forminator GravityForms HTML Forms wpDiscuz WPForms WordPress Login, Register, Password reset WordPress Comments WooCommerce Many other plugins and your own content (via the [openporte] shortcode, or the deprecated [altcha] alias) Source Code All source code for the plugin, and the ALTCHA widget is available on GitHub. In the repository, you’ll also find versions of non-minified JavaScript and CSS assets: Plugin: https://github.com/openporte/openporte ALTCHA Widget: https://github.com/altcha-org/altcha