Use var_dump()
on $item
and $_product
, which are both used in the email-order-items.php
template. $_product
revealed a post
object, which itself has a post_excerpt
property, and it holds the contents of the "Product Short Description" from the WooCommerce product form.
For adding the description below the item name, use this code
echo '<br/>' . $_product->post->post_excerpt;
It will work