Under what circumstances senders cannot track a mail item using the mail service of Hongkong Post?

Senders can track a mail item using the mail tracking service of Hongkong Post, except the following types of mail item.

1. Outward ordinary surface mail / air mail (i.e. The mail item does not have an item number.)
2. Inward ordinary surface mail / air mail (i.e. The mail item does not have an item number.)
3. Mail items returned from other destinations without any item number
4. Local ordinary mail which does not have an item number

All non-local postal administrations will not help track an item if no item number is available. For mail items returned from other destinations without any item number, if the sender would like to know the reason for non-delivery, he / she is advised to send a copy of the front and back of the envelope of the returned mail item to the addressee and ask the addressee to check with his / her local postal service provider.

Any item sent as ordinary mail does not have an item number for mail tracking. Under normal circumstances, ordinary mail will only be delivered according to the addresses without being recorded. The Hongkong Post does not provide tracking service for local ordinary mail.