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Unsolicited Electronic Messages Ordinance

The Unsolicited Electronic Messages Ordinance ("the UEMO") has fully commenced on 22 December 2007. Now, senders of commercial electronic messages are required:

  • to provide clear and accurate sender information in the message;
  • to provide an unsubscribe facility and an unsubscribe facility statement in the message;
  • to honour unsubscribe requests within ten (10) working days after the request has been sent;
  • not to send commercial electronic messages to any telephone or fax number registered in the Do-not-call Registers starting from the tenth (10) working day of its registration, unless consent has been given by the registered user of the relevant telephone or fax number;
  • not to hide the calling line identification information when sending messages from telephone or fax numbers; and
  • not to send email messages with misleading subject headings. 

In addition, the UEMO also prohibits:

  • the use of unscrupulous techniques to expand the reach of commercial electronic messages; 
  • fraud and other illicit activities related to the sending of multiple commercial electronic messages.


Q: What is the aim of UEMO (Unsolicited Electronic Messages Ordinance)? 
A: The UEMO is aimed for regulating the sending of electronic messages that have a commercial purpose.

Q: Which kind of message will be subject to regulation? 
A: The UEMO will cover any messages with a purpose of promoting and advertising, including pre-recorded voice messages, SMS, faxes and emails sent to a Hong Kong telephone number or received in Hong Kong.

Q: Is it necessary to offer a way for recipients to unsubscribe from receiving future messages? 
A: Yes. Fail to do so will be subjected to prosecution.

Q: How can the tools provided by WeB help me with UEMO? 
(a.1)We provide you with the "Unsubscribe facility" that you can easily insertt to your promotion emails. 
(a.2) We record the unsubscribe requests from your customers and keep and update them in the "Unsubscribe list".