I just got an email for the first time from Amazon.ca. I’ve never purchased anything from them but they had my email address and even noted it was part of my account as they usually do in the messages from the US Store. Interestingly my login info worked even though I have no purchase history. Seems like Amazon is sharing the platform with the canadian store completely. I can see my one-click info and addresses I’ve used to ship as well. Hopefully this is just a silly error on their part and not some data mix-up of a greater degree.