After installing the new Outlook 2007, I noticed that there had been some changes the way mails and tasks are tagged and categorized. In previous versions of Outlook it was possible to categorize and mark the different items for follow-up. The main difference I noticed, was the coloured categorization from the beginning. After starting Outlook 2007 the first time, the different tags from the previous versions are merged with the follow-up tagging from Outlook 2003. After having finished the merger, the categories view looks like a rainbow, but the new way items are tagged is very helpful.
A new feature (for me) is the possibility to the items with keyboard shortcuts (STRG-Fn) for faster categorization. This is also helpful if you use am IMAP server containing your email. The normal operation of Outlook 2007 does not allow to tag email items that are stored on an IMAP server: If the menu bar is extended with the categorizer addon, it shows up in a disabled manner. If you have migrated from a Office 2003 installation, you might notice that there are some tagged emails! Using the right-click on the IMAP mails, you can add/remove the different categories to/from the item.
So, if you want to tag IMAP based mail hat does not have a tag, you have to use the keyboard shortcuts: et voilà , it works. Why the categorization using the menu bar does’t work is not reasonable. Maybe this is fixed with the next servicepack .. 