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You can check Outlook quota usage by using Outlook Web App or Microsoft Outlook.

Outlook Web App

  1. Login Outlook Web App (https://staffmail.um.edu.mo)
  2. Click the gear icon in the top-right corner, then click Options.
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  3. In account page, look for the Mailbox Usage.
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Microsoft Outlook (Windows)

  1. Click File tab and select Info in the left column.
  2. In file menu, click Cleanup Tools, then select Mailbox Cleanup in the drop down box.
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  3. In Mailbox Cleanup window, click view mailbox size button.
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  4. In Folder Size window, click Sever Data tab.
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  5. The Server Data tab will display the mailbox usage and list the size of each folder.