I recently discovered that you can transfer your personal email to a Google for Domains account for free. You can have up to 50 users on your own domain name by pointing your MX record to Google email servers. You can then offer your users presence, email, shared documents and shared calendar. There is also built in instant messaging and all the other good stuff you are used to from Gmail. Check it out and make the jump today and you will be as happy as I am with it!