Disable Woocommerce order completed email when order items have specific product tags

Question

I'm using the following code, but it's not working, WooCommerce is still sending emails when the order changes from processing to completed for those two product tags.

add_filter( 'woocommerce_email_recipient_customer_completed_order', 'product_tag_avoid_completed_email_notification', 10, 2 );

function product_tag_avoid_completed_email_notification( $recipient, $order ) {
    if ( is_admin() ) {
        return $recipient;
    }

    // HERE set your product tags (comma-separated slugs)
    $disabled_tags = array( 'special-promo', 'regular' );

    // Loop through order items
    foreach ( $order->get_items() as $item ) {
        // Get an instance of the WC_Product object
        $product = $item->get_product();
        
        // Get the correct product ID (for variations we take the parent product ID)
        $product_id = $product->is_type('variation') ? $product->get_parent_id() : $product->get_id();

        // Check for product tags for this item
        $tags = wc_get_product_term_ids( $product_id, 'product_tag' );

        // Check if any of the disabled tags are present in the product tags
        if ( array_intersect( $disabled_tags, $tags ) ) {
            return ''; // If any of the specified tags are found, we return an empty recipient
        }
    }
    
    return $recipient;
}

I want to disable the customer email sending when an order change from processing to completed with products tagged with " special promo" or "Regular"

Answer 1

There are some mistakes and complications in your code… Try the following simplified revised code:

add_filter( 'woocommerce_email_recipient_customer_completed_order', 'product_tag_avoid_completed_email_notification', 10, 2 );
function product_tag_avoid_completed_email_notification( $recipient, $order ) {
    if ( is_a( $order, 'WC_Order' ) ) {
        // HERE set your product tags (comma-separated term names, slugs or Ids)
        $targeted_terms    = array('special-promo', 'regular');
        $targeted_taxonomy = 'product_tag';

        // Loop through order items
        foreach ( $order->get_items() as $item ) {
            // Check for matching product tags 
            if ( has_term( $targeted_terms, $targeted_taxonomy, $item->get_product_id() ) ) {
                return ''; // return empty recipient avoiding this email notification
            }
        }
    }
    return $recipient;
}

Code goes in functions.php file of your child theme (or in a plugin). It should work.

Other related answers