Hi Keith, I haven't got round to updating my client for the last couple of releases yet, so you may have already addressed the issue, but we had a discussion a few weeks ago on a possible new feature:
At the moment the client doesn't create Toodledo folders for Outlook categories it doesn't recognize. This is mainly because it didn't occur to me that this would be useful (it's obvious in hindsight). I'll look into adding this to a future release.
I just wondered whether you'd thought further about this?