Whether you use Ebay Postage Labels or integrated API with My Post , this information is already provided. The good thing now is with My Post, you will no longer need to check the box asking if AP should email updates to receiver

 

I think the only people that this affects is the casual seller that does over the counter postage rather than label creation via the two I mentioned and that too will change once the new eBay free store selling format comes into play.