The current Canada Post module is terribly out of date. Canada Post has abandoned the Sell Online platform years ago, and uses only Rest/Soap. The solution I have mashed together, of the Shipping Boxes Manager module and Advanced Canada Post produces rates, but the box manager is terribly inaccurate with its logic for packing boxes, and the advanced Canada post module won't return rates for Tracked Packet, Priority and other services.

It's been 4 years since the Canada post Module has been updated, if twitchtoo or anyone can produce a module that works with CP's new platform, and handle boxes in a competent way, I'd gladly contribute money towards it.