Mail delivery service is performed from Monday to Friday, only express delivery, viz. Speedpost and Local CourierPost services, will be available on Saturday. No mail delivery services will be provided on Sunday and public holidays unless it is so announced. All mail will be delivered once except those otherwise stated. For mail items requiring signature for receipt or those with sizes which cannot fit through letter boxes, postmen will attempt door delivery. In case of unsuccessful door delivery, postmen will issue mail collection notification cards with which the recipients collect the mail from designated post offices.
If the mail item is a Speedpost (EMS) item or a parcel, the addressee may use the "Mail Redelivery Service" (subject to a service charge).
To maintain a proper record on unsuccessful door delivery attempts (except for the delivery of ordinary mail items), the postman is required to take photos of the floor number and/or any iconic symbols in the public area using their PDAs as appropriate. Information collected through these photos will be used solely for the purpose of mail handling and will not contain any personal data.
Mail item is delivered according to the address indicated (i.e. delivery to the address) but not to the designated addressee as given on the mail item. Hongkong Post only delivers mail items with complete and deliverable addresses. Apart from complete addresses of recipients, senders should also indicate their return addresses in case of unsuccessful delivery. Local addresses should include the following information (where applicable) :

Please refer to the link below for details on mailing address format:
Make good use of “Mailing Address Format Finder” and include sender’s address for proper delivery
In general, ordinary mail not requiring a signature will be delivered to letterboxes at ground floor lobbies or those outside unit doors. If the postman cannot determine from the address on a mail item alone whether sub-divided units are located at the address, the postman will follow the "delivery to the address" principle and deliver the mail item to the relevant letterbox based on the addressee’s address. Letters addressed to a sub-divided unit will be delivered directly to its independent letterbox if one is provided, or to the main letterbox otherwise.
As for mail that requires a signature for acknowledgement of receipt, door delivery will be effected for letters addressed to sub-divided units if postmen can clearly identify the door numbers upon arrival at the delivery addresses of sub-divided units. Otherwise, to avoid disputes arising from items being signed for by occupants of other sub-divided units, postmen will generally not proceed with door delivery. Instead, they will issue Mail Collection Notification Cards (“Notification Cards”) to the addressees and record the delivery results with their PDAs. The addressees or their authorised representatives may collect the mail from designated post offices by presenting the Notification Cards, together with their valid identification documents for verification or registration purposes.
To safeguard mail privacy and security and to facilitate secure and efficient delivery, Hongkong Post recommends that owners or occupants of sub-divided units install independent doorbells and independent letterboxes in prominent locations at the main entrances or exits of the buildings (where applicable Note 1). Please click here for further information on letterbox installation requirements.
For houses in villages, Hongkong Post would consider providing door delivery service only when the houses are allocated with official building numbers by the Rating and Valuation Department (RVD) Note 2. For owners or occupants of houses who wish to apply for building numbers, please download the application form the RVD website at www.rvd.gov.hk and send the completed form, together with the required documents, to the RVD.
All mail items are delivered according to the addresses indicated. Mail items bearing incorrect or undeliverable addresses Note 3 will be returned to senders. If such items bear no senders’ addresses, disposal will be arranged according to our established procedures. We will not contact the recipients or senders even if telephone numbers are present on the mail items Note 4.
Therefore, senders are strongly advised to ensure the correctness and completeness of both recipients’ and senders’ addresses before posting.
Note 1: Regarding arrangements for installing independent letterboxes, please discuss fully in advance with your property management company or owners' corporation concerned (where applicable) and obtain their consent.
Note 2: For houses in villages with building numbers allocated, the availability of door delivery service is still subject to the accessibility of such houses and whether it is reasonably convenient for our Postmen to carry out their duties. For houses in villages without official building numbers allocated by the RVD, we suggest these villages to install residents’ nested letter boxes for receiving ordinary mail.
Note 3: Undeliverable addresses refer to those without the information that an address should include, such as name of the street, building number, name of the building, flat/room and floor numbers, and including only the lot number is an example under this category.
Note 4: Except for Speedpost, Local CourierPost items, Local and Inward Registered mail, e-Express+ and Insured Parcel.