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Well, I currently have 5 amazon accounts running and move ~250 products or so every 10ish days, so id rather have this printer do 99% of the work for me and save time (which results in more time to make money) in the end.

Any postage service you use with USPS will work without Amazon linking.

Correct me if im wrong, but when Amazon's servers ping USPS with the tracking info you enter, it is simply looking to check for the following:

• Whether USPS has received notification of the upcoming shipment, showing the shipment is valid
• If the shipment is delivered yet

Nowhere in the business solutions area nor the regular consumer area you visit when you go to usps.com to check your shipments reveal the originating address from which the shipment came. That information is only known by USPS, and I feel as if that type of information would only be given out in the case of a court subpoena.

Now UPS, FedEx, and other private carriers on the other hand, I have no idea. I just know that since USPS is a govt. regulated system, they dont **** around.

it doesn't reveal the exact address where the shipment is coming from, but it does reveal the local mail processing center where the parcel was processed.