contact-form-registration.php

<?php
defined( 'ABSPATH' ) or die( 'Silence is golden!' );
/**
 * Plugin Name: Contact Form Registration
 * Plugin URI: http://thewebland.net/extensions/contact-form-registration
 * Description: Auto registration for Contact Form 7
 * Version: 1.0
 * Author: Oleh (Heilgard) Hrebeniuk
 * Author URI: http://thewebland.net
 */


register_activation_hook(__FILE__, 'init');

function init(){
    if( function_exists( 'contact-form' ) ){
        if ( !is_plugin_active( 'contact-form-7/wp-contact-form-7' )){
            //@todo notice activate
        }
    } else {
        //@todo notice install
    }
}


function createUser($cfdata){
    print_r($cfdata);
    return ($cfdata);
}
//add_action('wpcf7_before_send_mail','createUser',1);