stevenf's blog pointed me to Zoë. What an amazing notion. I won't get into the details of discussing what it is, as their website does a fine job of that.
But I've now spent the better part of the last 4 hours reading emails (from what seem like a lifetime ago), having dumped my old Entorage mail database into it.
Mail that has been hidden away for a couple of years now, dating back to 1998.
Christ almighty, I just wasn't ready for this.