Re: Stamps.com copaitable module
Both Stamps.com and Endicia have the files available. I've used both and settled on Stamps.com based mostly on how my eyes liked the display. Functionality is similar if not the same. At one time, and may still be, they both used the same files that were actually developed by ShipRush. The Stamps.com version does "talk back" to zencart and changes the order status from "Processing" to "Delivered".
There is also a "ShipStation" plugin that offers similar functionality. I have several thousand Stamps.com labels which are not compatible with ShipStation, so that is one reason that I don't consider a change.
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