ToolBox -

If you have upgraded your Outlook to the 2007 or 2010 version or you have migrated data over from an old mailbox to a new mailbox, you may need to perform an upgrade to Color Categories to maintain a consistent look for marking and categorizing your emails.

1. Right-click the main folder that contains your Inbox, Deleted Items, Sent Items, etc. Select Properties.


2. At the bottom of the Properties window, click the Upgrade to Color Categories button.


3. When asked to confirm the upgrade, click the Yes button. The upgrade may take a little while to complete, but you can continue to use Outlook while it does this.

This will also need to be performed on all Outlook Data Files. Once this has been done all the customer categories should be restored form the data within the imported .PST or .OST file.