Checking email quota usage
Action
You can check your email quota in Outlook on the web via https://outlook.office.com/mail/options/general/storage
Instructions
Open Outlook.
Right click on Inbox.
Select Properties.
Select the button Folder Size.
A window will then appear showing your total mailbox usage. The information will appear
in KB instead of GB. Your quota is roughly 50,000,000 KB.Right-click on the Status Bar at the bottom of your Outlook window:
Click Quota Information:
The Status Bar will now display how much free space is remaining in your mailbox: