To view how much storage space is available in a user’s mailbox
Go to Office 365 admin center
Click Active Users
Click on user
At right, click Mail menu at top
Click Edit Exchange Properties
Click Mailbox Usage
To view how much storage space is available in a user’s mailbox
Go to Office 365 admin center
Click Active Users
Click on user
At right, click Mail menu at top
Click Edit Exchange Properties
Click Mailbox Usage