In outlook, right click on Mailbox - LASTNAME, FIRSTNAME, and select Properties For.... in the list.
Select Folder Size from the window that appears.

Your current mailbox size will be displayed beside Total Size. Mailboxes have a quota of 300,000KB.

In outlook, right click on Mailbox - LASTNAME, FIRSTNAME, and select Properties For.... in the list.
Select Folder Size from the window that appears.

Your current mailbox size will be displayed beside Total Size. Mailboxes have a quota of 300,000KB.
