doltics

Doltics Radar checks enabled WordPress flows before they complete. Admins can enable protection for outbound email, submitted comments, and account registrations under Settings > Doltics Radar.
Email protection uses WordPress core mail hooks when available. Doltics Radar also includes a Mailgun compatibility adapter for Mailgun versions that replace <code>wp_mail()</code> without calling <code>pre_wp_mail</code>.
<h3>API Contract</h3>
The plugin sends a JSON <code>POST</code> request to the URL <code>https://radar.doltics.com/score</code> :
<pre><code>{
 "text": "The sample text",
 "locale": "en"
}
</code></pre>
The API should return JSON using one of these response shapes:
<pre><code>{
 "score": 0.95,
 "classification": "spam",
 "signals": {
 "token_count": 10,
 "unknown_word_ratio": 0.1,
 "spam_keyword_score": 0.61,
 "uppercase_ratio": 0.34,
 "exclamation_density": 0.3,
 "url_count": 1
 }
}
</code></pre>
Numeric scores are compared against the configured threshold.

Doltics Radar

Protects selected WordPress email, comment, and registration flows with a spam protection API.

Muhammad Zamroni

Simple plugin to fight spam in registration form. It show color in box and user must type the name of color. The colors are red, green, blue, yellow, black, white, pink, orange, purple, grey.
Now using generated image to provide color. Bot can’t read this color name. Simple, nice and effective.

matriphe colorspam

Fight spam in registration form using color recognition.

Doltics Radar vs matriphe colorspam