User Registration - no Email required

Question

We are looking to modify the registration so that no email is required (yes we know this will be an issue). We are using the Registration Plus Redux plugin since it has options we are using currently.

How can we have it so that when a new user signs up, we only ask for their First Name, Username they choose and password?

UPDATE

Our servers/system doesn't allow email to be sent (company policy) and we can't store email addresses due to PII policies (we'll be dealing with European countries that doesn't allow for email addresses to be stored since its a Privacy issue).

We can only have First name and their password (with Registration Redux, we are creating registration codes they can use, that will appear in their profile, to help with password reset, which will be done through our customer service). No email notifications will be sent out (we have auto-approval on).

Answer 1

Just install a plugin called - Snippets & Activate. Than on left panel click Snippets -> Add new. Type a title of your own & paste below code. After that click a option there in the bottom "Run snippet everywhere" and press Save/Active. That's all you need to do. Enjoy...

add_action('user_profile_update_errors', 'my_user_profile_update_errors', 10, 3);
function my_user_profile_update_errors($errors, $update, $user) {
    $errors->remove('empty_email');
}

add_action('user_new_form', 'my_user_new_form', 10, 1);
add_action('show_user_profile', 'my_user_new_form', 10, 1);
add_action('edit_user_profile', 'my_user_new_form', 10, 1);
function my_user_new_form($form_type) {
    ?>
    <script type="text/javascript">
    jQuery('#email').closest('tr').removeClass('form-required').find('.description').remove();

    <?php if (isset($form_type) && $form_type === 'add-new-user') : ?>
        jQuery ('#send_user_notification') .removeAttr('checked');
    <?php endif; ?>
    </script>
    <?php
}

Answer 2

To customize your registration form, follow the instructions outlined here - Customizing the Registration Form. Note that your requirements are unusual so your customization will be more extensive. AFAIK you will need to provide a fake email address per account. You can use javascript in the registration form to fill-in necessary data (e.g. email address).