Is the letter announcement true?

The notification letter sent by SMS is true. The text of the notification letter usually includes two contents: 1, which is the reason for informing and explaining the reason for sending this letter; 2, is to inform each other, concisely describe the specific content of the relevant matters and issues that should be paid attention to. The writing format of the notice is as follows: 1. Title. The title of the notification letter generally consists of the issuing authority, cause and language, and sometimes it can only consist of cause and language; 2, the text, the reason, background and basis of the beginning; 3. Conclusion: Different types of letters have different conclusions.