Is Hashcash for Contact Form 7 free?

Yes, Hashcash for Contact Form 7 is free to use. It is available as a free plugin on WordPress.org.

How many websites use Hashcash for Contact Form 7?

Hashcash for Contact Form 7 has 40 active installations as tracked by WordPress.org.

What are the best Hashcash for Contact Form 7 alternatives?

Popular alternatives to Hashcash for Contact Form 7 include Hashcash. You can compare them side-by-side on our comparison pages.

Does Hashcash for Contact Form 7 work with the latest WordPress?

Hashcash for Contact Form 7 has been tested up to WordPress 3.7.41. It requires WordPress 3.4.0+ and PHP false+.

PluginSift

Hashcash for Contact Form 7

Name: Hashcash for Contact Form 7
Rating: 5 (3 reviews)
Author: Abdussamad Abdurrazzaq

Add Hashcash spam protection to Contact Form 7.

By Abdussamad Abdurrazzaq·Hashcash·Free

5(3 reviews)

·40 active installs·Updated 12 years ago

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As of April 2026, Hashcash for Contact Form 7 is a WordPress hashcash plugin with 40 active installations and a 5/5 rating from 3 reviews. It has been downloaded 3.4K+ times in total. Requires WordPress 3.4.0+ and PHP false+. Available on WordPress.org since 2012. Last updated 12 years ago — may have compatibility concerns. Top alternative: Hashcash.

5/53 reviews

40active installs

3.4K+total downloads

14 yearssince 2012

Overview

This plugin marries the plugins WP Hashcash and Contact Form 7 thus allowing you to protect your contact forms using captcha-less hashcash spam prevention. Requires both WP Hashcash, or WP Hashcash Extended if you prefer, and Contact Form 7 to be installed and activated.

The main advantage of using this plugin is that bots who attempt to send spam using your contact form will be blocked without inconveniencing human users. Users won’t have to enter weird image captchas just to reach you.

See the Hashcash for Contact Form 7 homepage for more information.

Read full description on WordPress.org