// Generate the password and create the user
$password = wp_generate_password( 12, false );
$user_id = wp_create_user( $email_address, $password, $email_address );

//login
wp_clear_auth_cookie();
wp_set_current_user ( $user_id );
wp_set_auth_cookie  ( $user_id );

// Set the role
$user = new WP_User( $user_id );
$user->set_role( 'subscriber' );

//Ready data for linked post type creation
$new_post = array(
    'post_content' => $email_address,
    'post_status' => 'publish',
    'post_date' => date('Y-m-d H:i:s'),
    'post_author' => $user_id,
    'post_title' => $post_name,
    'post_name' => $post_name,
    'post_type' => $user_type
);

//Create the post
$account_link_post_id = wp_insert_post($new_post);