John Dalesandro

<p>The <strong>Analytical Spam Filter</strong> plugin for WordPress blocks comment, trackback, and pingback spam. It uses multiple spam detection methods without challenging the user with obstacles such as captchas, math problems, etc. and it does not rely on external services or APIs. This is a low overhead plugin that begins blocking spam as soon as it is activated. It is compatible with caching plugins as long as the user has JavaScript enabled. The plugin blocks spam submitted through the default WordPress comment form only.</p>
<p>Logic is used to identify spam comment submissions. No user interaction is required. The spam blocking mechanisms work transparently behind the scenes. Most visitors will require longer than a few seconds to read a post and add a meaningful comment so any comments submitted within a short time threshold are identified as spam. Comments containing a large number of links are flagged as spam. The plugin uses an encrypted code and a honeypot to filter robotic submissions. All field names added by the plugin are randomized to prevent detection based on a source code signatures.</p>
<p>Configuration options include:</p>
<ul>
<li>Enable Cache Compatibility (requires JavaScript)</li>
<li>Add spam to WordPress queue or block completely</li>
<li>Send diagnostic information to site administrator</li>
<li>Automatically compatible with the <strong>Micro Contact Form</strong> plugin to block spam messages.</li>
</ul>
<p>Blocking options include:</p>
<ul>
<li>Honeypot Trap</li>
<li>Randomized Internal Field Names</li>
<li>Timestamps (minimum and maximum entry time)</li>
<li>Aggressively check for excessive URLs</li>
<li>Check if JavaScript is enabled</li>
<li>Automatically block repeated spam from IP</li>
<li>Automatically block repeated spam based on content</li>
<li>Require User Agent string</li>
<li>Require Referer</li>
<li>Block Trackbacks</li>
<li>Block Pingbacks</li>
</ul>


Analytical Spam Filter

Block WordPress comment spam, trackback spam, and pingback spam through intelligent analytics instead of interactive challenge response tests.

Freemius

Kofi Mokome

<p>Do you receive spams every day? have you installed a dozen plugins and you still get spammed? Well this may be the solution to your problem.<br />
This plugin filters messages submitted from contact form 7. You can decide to either filter messages based on restricted words found in the content of the message or filter based on the email of the person submitting the form.<br />
Filters will be extended to other contact form plugins with time.</p>
<h3>Supported Plugins</h3>
<ol>
<li>Contact form 7</li>
<li>WPForms</li>
</ol>
<p>Note: This is just an extension. This plugin is not affiliated with or endorsed by Contact Form 7 or WPForms.</p>
<h3>Pro Features</h3>
<p>Upgrade to the pro version from the Account submenu page to have access the following features:<br />
1. Unlimited words and emails: Add as many words and emails as you want<br />
2. Month Reports: Receive monthly spam reports directly to your email<br />
3. Spam Suggestion: Receive suggestions for new spam words and emails<br />
4. Blacklist/Whitelist forms: Decide which forms to validate or not to validate<br />
5. CSV Upload: Upload CSV with spam words/emails<br />
6. Add custom filters: Create your own custom filters</p>
<h3>PRIVACY</h3>
<p>We may collect ONLY the following information, if accepted by the site administrator:<br />
– The messages blocked by the plugin and<br />
– Words added to the plugin as spam<br />
This is used solely for the purpose of making improvements to the plugin.</p>
<p>In addition to the above, Freemius, a third party plugin used to manage plugin licences may also collect additional information, if the site administrator accepts.</p>
<h3>How to Contribute</h3>
<p>The source codes can be downloaded here <a href="https://github.com/kofimokome/cf7-message-filter" rel="nofollow ugc">GitHub</a></p>


Message Filter for Contact Form 7

Filter messages submitted through contact form 7 based on words and/or emails listed as restricted.

Analytical Spam Filter vs Message Filter for Contact Form 7