Six in the morning at the depot.
The inbound trunk arrives and the goods-in operator scans each consignment as received; anything on the manifest that does not scan is flagged before the drivers arrive.
Routes are built and every parcel is scanned to its route, so a consignment sorted to the wrong cage is caught at the sort, not at four in the afternoon.
Each driver opens the scan page on their own phone, sees their consignments in stop order, and taps out-for-delivery as the van leaves; the recipients receive a message that the parcel is on its way today with a link to their tracking page.