Fwiw, I expect I will continue keeping my main inbox on my server, and filtering emails heavily so that only personal and work contacts, and replies to things I have written on mailing lists, are forwarded to my N900. The rest will be accessible on the server as usual, but not shouting their beepy goodness at me on the N900 through the day.

Oh dear, I'm quite looking forward to designing my personal info-handling workflow. I think I might be becoming a geek ;-)