As I mentioned earlier, this works more as a borrowed functionality from opensearchCLI; it simply takes a snapshot of the current dashboard state and sends it to you as a report via email.
To get the most value from it, I would recommend customizing your dashboard to include all the information you like to see reflected in the report. That way, the snapshot will be more meaningful and aligned with your needs.
At the moment, this serves as a practical workaround for your requirement. The full feature is still listed in the backlog (as noted in the GitHub repository), but based on the roadmap, you can expect a complete implementation in the near future.
Regards,