And make sure the package is insured!
ALSO, from the Canada Post website:
When an item will not fit in the receiver’s regular mail receptacle, leaving it in a Safe Drop location will be considered. To be considered as a Safe Drop, the item cannot be left in the open (e.g. door step). A Safe Drop card, indicating the location of the Safe Drop, is left at the time of delivery. At the time of mailing, a customer may instruct that the item NOT be Safe Dropped by adding the notation DO NOT SAFE DROP on the address label. A delivery attempt will be made and if no one is available to receive the item, a Delivery Notice Card will be left. Items requiring a signature will not be safe dropped.
So make sure you have the sender clearly indicate DO NOT SAFE DROP / NE PAS LIVRER EN LIEU SŪR
on the package.