Add notification bubble for to custom admin menu page

1.md

There are two classes used by WordPress to display the notification bubbles:

• update-plugins
• awaiting-mod

Your notifications have nothing to do with plugins, so it will be nicer to use the second class. You should change your function like this:

function contact_form_create() {
    $notification_count = 2; // Notification value

    add_menu_page(
        'Contact Forms',
        $notification_count ? sprintf('Contact Forms <span class="awaiting-mod">%d</span>', $notification_count) : 'Contact Forms',
        'manage_options', 
        'contact-form',
        'contact_form_page_handler'
    );
}

add_action('admin_menu', 'contact_form_create');