Is there any way to not require email address or disable notification upon setting up a member?

Question

I'm setting up a website which will track the users by their role in relationship to the company. I want to use the built-in WP user functionality, but I don't want to send out notifications to all these people that I'm mucking around with the backend, when I have no intention of giving them edit access at all. I just want their information in there for the company's use.

Specific Problems: Regardless of whether I use a plugin to extend WP's functionality or not,

1. Setting up a user requires an email address
2. The email address is required to be unique (I can't make my own test email address primary)
3. Setting up a user WILL generate an email notification

I need to be able to either not require an email address, set up the users with the same corporate email address, or disable email notifications.

Any help is appreciated.

Answer 1

Maybe the simplest way is to make a quick plugin that has your own form for inserting users.

wp_insert_user() doesn't require an email address or password, and doesn't generate an email notification.

function wpa70409_add_user(){
    $userdata = array(
        'user_login' => 'testuser',
        'display_name' => 'Test User'
    );
    wp_insert_user( $userdata );
}

Answer 2

I found the Eliminate Notify Email plugin, which disabled user email notification, despite being defunct.