Code-Snippets-Functions/Execute a function on a child site/WooCommerce/send-on-hold-email-notification-to-admin.txt

function filter_woocommerce_email_headers( $header, $email_id, $order ) {
    // Compare
    if ( $email_id == 'customer_on_hold_order' ) {      
        // Prepare the the data
        $formatted_email = utf8_decode( 'My test <my_test@email.com>' );

        // Add Bcc to headers
        $header .= 'Bcc: ' . $formatted_email . '\r\n';
    }

    return $header;
}
add_filter( 'woocommerce_email_headers', 'filter_woocommerce_email_headers', 10, 3 );