<?php
/*
Plugin Name: Custom New User Email
Description: Changes the copy in the email sent out to new users
*/
// Redefine user notification function
if ( !function_exists('wp_new_user_notification') ) {
function wp_new_user_notification( $user_id, $plaintext_pass = '' ) {
    $user = new WP_User($user_id);

    $user_login = stripslashes($user->user_login);
    $user_email = stripslashes($user->user_email);
    $user_info = get_userdata(1);

    $message  = sprintf(__('New user registration on %s:'), get_option('blogname')) . "rnrn";
    $message .= sprintf(__('Username: %s'), $user_login) . "rnrn";
    $message .= sprintf(__('E-mail: %s'), $user_email) . "rnrn";
    $message .= sprintf(__('Role: %s'), $user_info->roles) . "n";

    @wp_mail(get_option('admin_email'), sprintf(__('[%s] New User Registration'), get_option('blogname')), $message);

}
}

?>