Their tracking is updated by the service that makes the delivery. When the delivery company punches in the information that the package is the delivered, that's how they know and send the notice. You should always have the package before they send and email saying it was delivered. I have had delivery services mark delivered and the company I purchased from was told a package was delivered when it wasn't that is where problems often arise, I wrote about this in another thread some months ago. UPS entered the info of package as being delivered and it was still on the truck, even the post office argued with me till I told them there were workers right outside my door who said no one came by and back and forth it went till the postal driver admitted the package was still on the truck and his reason for not delivering the package that day. Laziness really, large parcel, didn't want to leave it downstairs in the hall as well he/she shouldn't have and they didn't seem fit to bring it up the stairs/elevator at that particular time of morning. So you could say it was laziness and or they were too
hurried between deliveries. But in the mean time, everyone on the phone was telling me the package was delivered.
BTW! Annie, so glad things worked out and you received your kayaks, I remember when I used participate with aa kayaking group, I was looking at those inflatables, more so the boats, considering, there's no way I'd stay upright in a kayak, I've already tried, it made me dizzier than I already am. LOL!