I have create an email rule but I have some problems.
I set up a rule, but I can’t set the name of the user who created the content, other than the one who triggered the event $USER_NAME and the status of the workflow content.
The email should notify the creator of the content that user X has changed the state of the content to workflow state
It is not possible at the moment, but we could integrate notifo perhaps. It allows that users subscribe to everything they want and receive a notification when something changes. But it is in beta right now.
You can also create a webhook and send an email by yourself.
If none of this works you need to create a feature request to get access to the creator information.