Hashcash for Contact Form 7

Add Hashcash spam protection to Contact Form 7.

Author:Abdussamad Abdurrazzaq (profile at wordpress.org)
WordPress version required:3.4.0
WordPress version tested:3.8
Plugin version:0.1.4.1
Added to WordPress repository:02-12-2012
Last updated:28-12-2013
Warning! This plugin has not been updated in over 2 years. It may no longer be maintained or supported and may have compatibility issues when used with more recent versions of WordPress.
Rating, %:100
Rated by:3
Plugin URI:http://abdussamad.com/archives/581-Captcha-le...
Total downloads:2 782
Active installs:60+
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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.


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