Notification regarding a status in the selection process

Summary:

Hello everyone,

I would need to create a notification regarding a status of the candidate selection flow. That is, when a Recruiter moves a candidate to state x, the candidate should receive an email notification in which to read an informative. This notification should also be listed among the messages in the "Messages" section of the candidate's form.

Would anyone know the correct way to create such a notification and then make it visible to the recruiter in the Messages section?

I thank in advance anyone who responds.

Regards

Elisa