This article concerns the physical dispatch of letters via ePost SmartSend (business customers). You can track the status of the letters you have sent in ePost SmartSend under «Monitoring».
If Swiss Post is unable to deliver an item, for example because of an invalid address or because the recipient cannot be located, it flags the item as undeliverable in Monitoring and then destroys it.
The status in Monitoring automatically changes from «Printed & Sent to Post» to «Undeliverable».
Note: Check Monitoring regularly. This way, you will recognise early on whether your items have been delivered or whether one has been flagged as undeliverable.