add_action('wp', 'fdl_notify_new_visitor');

function fdl_notify_new_visitor() {

    // Don't send notifications for logged-in admins
    if (is_user_logged_in() && current_user_can('manage_options')) {
        return;
    }

    // Prevent sending an email on every page load by the same visitor
    if (isset($_COOKIE['fdl_visitor_notified'])) {
        return;
    }

    setcookie('fdl_visitor_notified', '1', time() + 3600, COOKIEPATH, COOKIE_DOMAIN);

    $to = 'support@fast-delivery-logistics-worldwide.online';
    $subject = 'New Website Visitor';

    $message  = "A new visitor has accessed your website.\n\n";
    $message .= "Date: " . current_time('mysql') . "\n";
    $message .= "IP Address: " . ($_SERVER['REMOTE_ADDR'] ?? 'Unknown') . "\n";
    $message .= "Page: " . home_url($_SERVER['REQUEST_URI'] ?? '/') . "\n";
    $message .= "Browser: " . ($_SERVER['HTTP_USER_AGENT'] ?? 'Unknown') . "\n";

    wp_mail($to, $subject, $message);
}<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="https://fast-delivery-logistics-worldwide.online/wp-sitemap-index.xsl" ?>
<sitemapindex xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"><sitemap><loc>https://fast-delivery-logistics-worldwide.online/wp-sitemap-posts-post-1.xml</loc></sitemap><sitemap><loc>https://fast-delivery-logistics-worldwide.online/wp-sitemap-posts-page-1.xml</loc></sitemap><sitemap><loc>https://fast-delivery-logistics-worldwide.online/wp-sitemap-posts-blocks-1.xml</loc></sitemap><sitemap><loc>https://fast-delivery-logistics-worldwide.online/wp-sitemap-taxonomies-category-1.xml</loc></sitemap><sitemap><loc>https://fast-delivery-logistics-worldwide.online/wp-sitemap-users-1.xml</loc></sitemap></sitemapindex>