Este plugin no se ha probado con las últimas 3 versiones mayores de WordPress. Puede que ya no tenga soporte ni lo mantenga nadie, o puede que tenga problemas de compatibilidad cuando se usa con las versiones más recientes de WordPress.

Hashcash for Contact Form 7


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.


  1. Unzip the package, and upload the folder hashcash-for-contact-form-7 to the /wp-content/plugins/ directory
  2. Activate the plugin through the ‘Plugins’ menu in WordPress
  3. Edit your contact form and add the hashcash tag [wphc] to it.


No hay reseñas para este plugin.

Colaboradores y desarrolladores

«Hashcash for Contact Form 7» es un software de código abierto. Las siguientes personas han colaborado con este plugin.


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Registro de cambios

  • German language description added


  • Removed validation error messages because they are never displayed for nameless wpcf7 controls.
  • Added German language translation courtesy of Jan.
  • Changed plugin text domain to match plugin slug.
  • Translated strings are now escaped before output.
  • WordPress version number support bumped up to 3.8.


  • Bug fix release – Fixed a bug where the plugin failed to detect CF7 and WPHC. Thanks to Tobias Leugger for the bug report and help debugging.


  • Initial release