There are a couple of times that they said they attempt delivery but did not leave a notice. I found the Canada Post tracking has become less reliable these days.
Speaking of Canada Post, I just realize that they have introduced a new service called FlexDelivery. You can designate a post office, maybe one close to work, and have your goods ship to there. Free of charge. Anyone tried it? I might try it since I am always at the office when they try to deliver my stuffs.