I usually hate adding plugins to Outlook. I’ve tried a few that claim to organize my email for me but I’m so organized already that I rarely have to search for things. I usually know where they are. I read about Xobni (Inbox backwards) and thought I’d give it a try. After watching the demo video I installed it and have been playing for it for awhile. It’s very nice.
Yes, it does slow down Outlook just a tad, but it does a really nice job of searching and giving you all kinds of information regarding your email. If you are using IMAP with a large account the indexing time will take quite awhile. If you have POP mail, give this thing a try.