Multiple Packaging Sizes with one Shipper

I am setting up Canada Post and Fedex for our shippers, but it appears you can only specify one box type per shipper. What are you supposed to do if you have some products that need to go into a larger box vs an envelope? How do you calculate the price? Am I missing something or is this a limitation?



Likewise how do you add both International Priority and International Economy? If you choose FedEx Envelope as the packaging, then Economy won’t work as FedEx does not allow you to use their envelopes for the economy service. There does not seem to be a way to use your own packaging for the economy service.

Unfortunately, this is a limitation - you can only specify one package type and size per shipper.