We have been using gmail via Google Apps for a while at work now, and I’m fairly hooked, and I am wanting to get rid of my server at home anyway, so I’ve taken the plunge with my quietlife.net mail. I am transferring over old mail now:
It’s been going all day. This is … going to take a while. Right now my inbox on google basically contains mail from around June of last year. It’s fairly depressing for a variety of reasons.
I’ve been using Google’s ‘hosted’ version for my email for some time. It’s worked really well thus far. Good luck!