Looking on in despair as a mishmash of e-mails piles up in Outlook? Xiant Filer ($20, 30-day free trial) may be able to help. It silently analyzes the way you file your e-mail, and based on what it finds, it recommends the proper folders for you to put all your incoming messages. Then, with a single click, you can send your e-mail to the most logical folders, and you'll be able to find it more easily in the future. No need to teach Xiant Filer; the program figures out where to file based on your preferences, and learns over time.
Xiant Filer works slightly differently depending on your version of Outlook. In Outlook 2003 and 2007 it installs as a toolbar with its own menu. In Outlook 2010 it creates its own new tab on the Ribbon, and puts all of its features there. Either way, though, it's a great way to automate routing messages to the right folders and making your e-mail life more productive.
Given that Outlook has the built-in ability to create rules that can perform a similar task, not everyone will need to pony up the $20 for Xiant Filer. It depends on how badly you need to cut through your e-mail clutter. It's far easier to route e-mail properly with Xiant Filer than it is to use Outlook's rules, which can be nearly incomprehensible. So if you find yourself wishing your e-mail were more organized, and you can't get Outlook's rules to help you, it's well worth a try.