Can I have my package left at the Post Office instead of delivered to my house?

You can do so by registering an account for Flex delivery with Canada Post at your local post office. They will hold it for pick up at the post office, and will not try to deliver to your home.

Without a Flex account, you can also select your delivery preference online on the Canada Post website after your order ships and you receive a tracking number for it. However, in this case you can only choose Do Not Safe Drop, and your order will be taken back to the post office, in case you are not at home to receive it.