Inventory Microsoft 365 Data Usage
To inventory Microsoft 365 Mailbox, OneDrive and SharePoint usage, follow the below instructions.
Mailbox Usage
Open the Microsoft 365 Admin Center
Expand Reports
Click on Usage
Scroll down to the Email Activity section and click the View More button below it.
Click the Mailbox Usage tab towards the top of the screen.
To generate a report of all users’ mailbox usage, scroll down to the user list and click on Export.
Review the .CSV file to identify mailbox usage.
OneDrive Usage
Open the Microsoft 365 Admin Center
Expand Reports
Click on Usage
Scroll down to the OneDrive files section and click the View More button below it.
Click the Usage tab towards the top of the screen.
To generate a report of all users’ OneDrive usage, scroll down to the user list and click on Export.
Review the .CSV file to identify OneDrive usage.
SharePoint Usage
Open the Microsoft 365 Admin Center
Expand Reports
Click on Usage
Scroll down to the SharePoint files section and click the View More button below it.
Click the Site usage tab towards the top of the screen.
To generate a report of all SharePoint usage, scroll down to the SharePoint list and click on Export.
Review the .CSV file to identify SharePoint usage.