How to View the Size of Your Entire Mailbox

You can determine the size of your entire mailbox by selecting Mailbox - Last Name, First Name instead of a single folder.

How to Identify Large E-mails

If you are having trouble staying below quota, it may be useful for you to locate solitary large messages which are clogging up your mailbox. To do so:

1. Open the Outlook Client.
2. Go to the Search Folders below the Sent Items folder and click on the Large Mail search folder.  This will show all messages larger than 500 KB.  It will also sort it from "Very Large (500 KB- 1 MB" to "Huge (1 - 5 MB)" to "Enormous (>5 MB)".

How to View the Size of a Single Folder

1. Open the Outlook Client.
2. Click on a folder, such as Inbox, to select it.
3. Right-click the folder and select Properties.
4. Click on the Folder Size button.