Is it necessary to send a short message to enter the interview?

Not necessarily. The following are three commonly used methods: ① SMS; 2 e-mail; 3 telephone. The reason for calling is that some HR want to do some understanding and communication before job seekers come for an interview. Of course, this can also be used as a checkpoint before the interview. For the two notification methods, I personally suggest that you reply after receiving it (if it is sent to you by the recruitment agency, you don't have to reply, such as Zhaopin Recruitment. ), and the HR there can also arrange the interview time and interviewer, otherwise you can't be sure whether you will go or not.