I'm one of those heavy Microsoft Outlook users, currently working on the 2007 version. God knows this tool is heavy and may impose problems. I wondered what the Super User crowd has to suggest in order to improve the usage experience.

Several suggestions of my own:

1. Always work in cached mode (Tools-->Account Settings-->Change-->Use Cached Exchange Mode)
2. Use Outlook's local archiving capabilities
3. Use Outlook's RSS reader - it's simple and allows offline access to your feeds
4. If you have e-mail subscriptions to magazines, blogs, etc. - create a subdirectory to keep them, and a rule to automatically move them there when they arrive (one rule per subscription, based on the sender e-mail.)

You can also share suggestions that require configuration of Exchange Server, for those of us who can make bring them to their IT managers.

What are your suggestions?

PS: "Use Gmail" is not an accepted answer, some of us don't control what email system we use...