free email client roaming profile

Free email client roaming profiles.

I need some recommendations. At work we are running Server 2003 with XP Pro hosts. I?m going open source as much as possible. We will be running openoffice.org, and are now looking for an email solution. Since most of the users share only a few computers, we are using roaming profiles. I am looking for a email client that supports roaming profiles natively, spell check, and supports IMAP.

Any suggestions?
Thanks