WP-Biz (Ryan)

The “honeypot” technique for SPAM protection is invisible to humans, and tricks robots into filling out an invisible form field. Then, if that invisible field has been filled, the form cannot be submitted. Easy, non-instrusive SPAM protection.
No settings to set, this honeypot is added to all Formidable forms on your site, unless the user is logged in. When SPAM is suspected, the form will not be submitted and the visitor will be alerted to this fact.
Tested to work with both Formidable (free) and <a href="http://www.wpbiz.co/go/forms" rel="nofollow ugc">Formidable Pro</a> (best bet for awesome form power!)
A note to Formidable Pro users: You paid to receive extra features in the Formidable plugin. Me too, it’s well worth it. This Honeypot plugin, and Ryan (the developer) are not connected to Formidable in any way. Since this adds another very helpful feature to Formidable, I ask you to send a <a href="http://wpbiz.co/donate/" rel="nofollow ugc">donation at WPbiz.co</a> to say thanks and encourage future developemnt.

Formidable Honeypot

Add SPAM protection to your Formidable forms without annoying your visitors with Captchas, math, or other fields.

Designed for Distinction

MailPoet Opt-in for Formidable Forms is a simple, WordPress-native connector that adds subscribers to MailPoet when a Formidable form is submitted.
<ul>
<li>Works with Formidable Forms (Free or Paid).</li>
<li>Requires the MailPoet plugin to be installed and active.</li>
<li>Does not require Formidable’s MailPoet add-on.</li>
<li>Does not use third-party services.</li>
</ul>
This plugin is intentionally scoped to opt-in subscriptions. It respects MailPoet subscription rules and does not force re-subscription of previously unsubscribed addresses.
<h3>Features</h3>
<ul>
<li>Form → MailPoet list connections (“rules”)</li>
<li>Explicit opt-in checkbox support</li>
<li>Optional “Always subscribe” mode per rule (use when your form has no opt-in field)</li>
<li>One list per rule</li>
<li>Compatible with MailPoet double opt-in workflows</li>
<li>Admin-only AJAX field mapping</li>
<li>Clean uninstall (removes plugin settings)</li>
</ul>
<h3>Requirements</h3>
<ul>
<li>Formidable Forms (free or paid)</li>
<li>MailPoet plugin (active)</li>
</ul>

Designed for Distinction – MailPoet Opt-in for Formidable Forms

A lightweight connector that subscribes Formidable Forms users to MailPoet lists using explicit consent.

Formidable Honeypot vs Designed for Distinction – MailPoet Opt-in for Formidable Forms