I have received the following email. The screenshot is in Japanese, but the content is about Dataverse exceeding capacity.
Since I only use the Power Platform plan included in Office 365, I do not want to receive such emails in the future.
For those who only use the Power Platform products with Office 365, I don't think this email is necessary, so please consider implementing a function that allows us to choose whether or not to receive it as soon as possible.
<the content of the email>
Database is running out of space
As of April 12, 2021 0:00:26 UTC, your tenant is using 100% of the available storage capacity of the Database (3.55GB/0MB used). Please take immediate action and continue to operate without interruption.
What happened? Your tenant is using nearly all of your Microsoft Dataverse (formerly Common Data Service) capacity. Dataverse storage for tenants includes all types of environments except trial, preview, support, and developer. The most common cause of capacity loss is applications using the increased amount of storage. Find out more about what happens when you exceed your storage capacity.
How do I fix it? Review the report on storage space usage. Reduce the amount of storage space you use by deleting or erasing different types of information. Find out how to add capacity and purchase it for your organization.
Troubleshooting Find out where storage is being used throughout your environment.