How to tell whether it is a short message sent by the Education Bureau?

1, not as long as it is sent by a mobile phone number.

2. The email with the word "unsubscribe" at the end is not.

3. The short message is not without the name of the Education Bureau.

4. If there are words such as malicious breach of contract, malicious overdraft, suspected fraud and sentence in the text message, it is not.