Below are help topics for setting-up and using Outlook:
The amount of email and attachments that you have stored on the email server are subject to a quota amount. The quota for faculty/staff is 2 GB. Messages (to include messages that you have sent) and attachments contribute to your quota size. The maximum size for a single email message (for both sending and receiving) internally is 35 MB and externally is 20 MB.
To view your quota in OWA: