Add a custom text to specific email notification for local pickup Woocommerce orders

Question

I tried the following code that is displaying a message to all those customers who should receive a customer_processing_order and customer_completed_order

Answer 1

This can be done iterating through order shipping items, this way:

add_action( 'woocommerce_email_order_details', 'my_completed_order_email_instructions', 10, 4 );
function my_completed_order_email_instructions( $order, $sent_to_admin, $plain_text, $email ) {
    // Only for processing and completed email notifications to customer
    if( ! ( 'customer_processing_order' == $email->id || 'customer_completed_order' == $email->id ) ) return;

    foreach( $order->get_items('shipping') as $shipping_item ){
        $shipping_rate_id = $shipping_item->get_method_id();
        $method_array = explode(':', $shipping_rate_id );
        $shipping_method_id = reset($method_array);
        // Display a custom text for local pickup shipping method only
        if( 'local_pickup' == $shipping_method_id ){
            echo '<p><strong>Ritiro in sede</strong></p>';
            break;
        }
    }
}

Code goes in function.php file of your active child theme (or theme) or also in any plugin file.

Tested and works.