It's been more than six months since CNET came out with a description of their perfect email client. (Google shows links to related discussions, and more features that people would like to see).

I am amazed that the centerpiece of our connected world, email, is basically controlled by Outlook and Outlook Express. Outlook in particular has no credible competitors that properly integrate PIM, email, and some form collaboration (although there are many other things that would be interesting to see). It will eventually happen, inertia notwhistanding. And then it will be time for Outlook to feel the heat.