I just finished rewriting the web based email software for SimpleApps so that it now supports an IMAP back-end.
I did this for a few reason. First and foremost I was trying to get anti-spam and anti-virus support for this domain. This is working now 
Next I wanted to use a complete email system that was under current development. I choose the MailToaster and I’m quite happy with it.
I choose IMAP to solve a few problems which ended up creating a few of their own. Cold Fusion does not natively support IMAP, even though it uses JavaMail as the core of it’s email engine. JavaMail does support IMAP, so I wrote a Cold Fusion CFC as a wrapper for JavaMail to gain the access I needed. (I’ve been working on this, on and off, for about two weeks now)
I’m pretty happy with this so far and I think I’m going to be even happier when this web site is moved onto new servers. If anyone is interested in the Cold Fusion CFC for JavaMail let me know. I’d love to have others use it too, even if it is pretty raw at the moment.