Google Apps and Gmail Notifier for Multiple Accounts

I've tried all kinds of Gmail notifiers in the past, and many of them leave something to be desired. I have to admit that one of the more recent ones, Spiffy, is on the verge of being awesome. Spiffy is simple, and that is partially because it is available in a portable form. The rest of the simplicity comes from being able to configure up to 5 Gmail accounts in a few minutes.