Safe Signup Form

Safe Signup Form is a WordPress Plugin that will forward a form submission to an email address, while preventing most automated attacks.

Author:Henry Woodbury (profile at
WordPress version required:2.0.2
WordPress version tested:3.3.2
Plugin version:1.2
Added to WordPress repository:16-04-2009
Last updated:04-02-2012
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, %:0
Rated by:0
Plugin URI:
Total downloads:9 187
Active installs:100+
plugin download
Click to start download

To stop automated attacks, Safe Signup Form leverages Elliot Back's WP Hashcash -- an elegant anti-spam engine that uses javascript to determine if the form is submitted by a robot or a web browser.

An administration page provides three options for handling submissions identified as spam:

  • Delete spam submissions.
  • Flag spam submissions (and forward them anyway).
  • Forward without flagging.

The basic plugin offers a simple name and email form, but the php can be easily modified to incorporate any number of fields.

Safe Signup Form uses XHTML compliant code and has been tested in WordPress 2.7 through 3.3.1, MSIE 7, 8, and 9, Chrome, Firefox, and Safari.