Function to add a list of item descriptions to WooCommerce order confirmation emails

wc-add-product-descriptions-to-order-emails.php

<?php
// Add item descriptions to order confirmation emails
function doublee_add_purchase_details($order_id) {
	echo '<h2>Item details</h2>';	
	echo '<ul>';
	$order = wc_get_order($order_id);
	foreach ($order->get_items() as $item) {
		$product_id = $item['product_id'];
		$product = get_post($product_id);
		echo '<li>';
		echo '<strong>' . $product->post_title . ': </strong><br/>';
		/* use this if you want the formatted version of the post_content, not plain text:
		$product_details = apply_filters( 'the_content', $product->post_content); */
		$product_details = strip_tags($product->post_content, '<strong>');
		echo $product_details;
		echo '</li>';
	}
	echo '</ul>';
}
add_action( 'woocommerce_email_customer_details', 'doublee_add_purchase_details'); 
?>