Underpaid mail items will not be accepted by the Immigration Department (ImmD). Mail items addressed to offices of the ImmD without sufficient postage will be returned by Hongkong Post to the sender, who will be charged with the deficiency plus a surcharge. Mail items without return address will be disposed of by Hongkong Post in accordance with their established procedures for handling undeliverable mail.
For proper delivery of your mail items, please ensure your mail items bear sufficient postage with return address before posting.
Please visit the following links for detailed information: