Sometimes, package sent by Canada Post would be lost or delayed and missed the expected delivery date. So customers need to take some measures to cut down the lost. File a claim against the Canada Post online can be a good solution. However, Canada Post has its own rules to handle this kind of problem. That is, for international items, only the sender has the right to file a claim.
For example, if you shipped a package via Canada Post to another country and the delivery standard date has now passed, then you can open a ticket online to file a claim. If the receiver in another country did not receive a package sent from Canada, he or she then should request the sender in Canada to file a claim against the Canada Post.
PS: In order to file a claim, your package must be sent by Canada Post Services that has a tracking number. Services like Xpresspost™, Expedited Parcel™ or Priority™ and Tracked Packets™ are entitled to tracking numbers, while Small Packet USA and Small packet international items are not entitled to tracking numbers.