I moved my domain-specific email over to Google Apps last week. It took a while because my domain registrar has a confusing user interface and no instructions. But after the kinks were worked out, I now have FREE email for my domain name with the excellent spam filtering that Google provides, as well as POP3 and the same webmail interface as Gmail users.

One reason why I moved it is because AT&T's DSL service has blocked port 25 for sending outgoing email. They are forcing their customers to use a bellsouth.net address if you want to use Outlook or similar mail reader. I prefer doing that over using webmail because it is quicker to send and receive emails. So, the most beautiful thing of all about Google's email (including Gmail) is that they don't use port 25 at all! I have been able to bypass AT&T's stupid rule.

I belive Google Apps has some minimal free webhosting, but I haven't tried it out yet.