An email is sent to the administrator when the remaining capacity of each area of the database/log/file is now 15%, 5% or 0%.
https://docs.microsoft.com/en-us/power-platform/admin/capacity-storage#do-i-get-notified-through-email-when-my-org-is-over-capacity


However, depending on the customer, even if the log area is insufficient, the database area may be used to make up for it.
In this case, the tenant is not lacking in capacity and the customer does not need immediate action.

We would like the following features:
-Notify us by email when the total value of database and log capacity is insufficient
-Customers can customize email thresholds