New standard of validation for Contact Form 7 plugin.
Contact Form 7 validation messages provide custom error messages for each field.
SiteBrains blocks spam posts using a completely configurable set of rules. Both interactively as the user types and on our servers upon submission.
WP Valid Email is a WordPress plugin which offers suggestions to users who mis-type their email address when entering it on your website.
A plugin developed by Social Media Ltd, to prevent form submission when the message contains custom predefined words.