What should be done with undeliverable parcels without ACS?

When a parcel is deemed undeliverable and there is no Alternative Container System (ACS) available, returning it to the sender with a reason for non-delivery is the appropriate course of action. This process is essential for a few reasons.

First, it ensures that the sender is informed about the status of their shipment. Providing a reason for non-delivery helps the sender understand why the package could not be delivered, whether it's due to an incorrect address, recipient not available, or other issues. This feedback allows the sender to correct any mistakes and resubmit the package for delivery if needed.

Moreover, returning parcels promotes accountability and transparency within postal operations. It preserves the integrity of the mailing process, as it ensures that items are not lost without trace, and it maintains customer trust in the postal service.

While options like sending the parcel to a different post office or holding for pickup may seem plausible, they do not address the fundamental need to inform the sender, and recycling or discarding the parcel would not be an appropriate action without consulting the senders about their undeliverable items. Therefore, returning it with a clear reason aligns with best practices in postal service operations.