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Checking Your Mailbox Size

Checking your Exchange mailbox size can assist you in remaining within your space quota.


Using Microsoft Outlook 2013 client

  1. Right-click on your mailbox. This is at the very top of the folder tree on the left. For example, John Smith’s mailbox would say, Mailbox – Smith, John.
  2. Choose Data File Properties.
  3. The Outlook Today window will appear. Click Folder Size.
  4. Look at the Total Size (including subfolders) toward the top. The size will be listed in Kilobytes (KB).

NOTE: 1 Megabyte (MB) = approximately 1024 Kilobytes (KB). Use to assist in converting megabytes and kilobytes.


Using Outlook Web App

  1. Click on the gear icon in the top-right corner and click Mail under the My app settings heading.
    Checking Your Mailbox Size 1
  2. Expand the General section and click My account.
  3. Your mailbox size is listed under Mailbox usage.
    Checking Your Mailbox Size 2

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