Just noticed if you use a usps account vs the paypal shipping you have more weight options plus you save up to 15% on shipping vs paypal. Looking over the rates it looks like I can save around 25% by opening a usps account.
usps.com only allows priority & express mail. Allows payment with credit card
paypal allows parcel post, first class, priority, express. Payment withdrawn from paypal balance or bank account
Registered mail needs to be done at a post office.
Both have discounts for purchasing shipping online. Not sure how much. My preference is usps.com, but the priority/express only thing is kind of irritating if I want to ship something small and cheap via first class.
Maybe. Did you sign up under their website? Or did you download the "shipping helper" or whatever it's called? The shipping helper allows all kind of shipping, but I think you need a postage meter. Not sure.