HI....what is the easiest way for my vendors, who are packing and shipping for me, to get shipping labels from me and my shopify shipping account? My rates through this will be much better than what these small vendors can get....is there a way for them to get the correct label after an order is placed? An app that can help? Or do I have to manually enter all the info, buy the label and then email to them? Am I assigned usps and ups account info that my vendors can use? HELP!!!