Is there a way to tell Mail.app to make the "new mail" sound only in certain instances? I have a filter that moves all messages from mailing lists I'm subscribed to to a "Lists" folder and marks them read as soon as they come in (it's not junk, but I prefer to have it archived so I can go back and read later if needed, instead of having it compete with 'normal' mail for my attention). I'd like to turn off the "new mail" sound, but only for these filtered messages, while leaving it in place for non-filtered mail. Is there any way to do this? I noticed it zaps junk mail without making a sound, but there doesn't appear to be an obvious built-in rule that does that, it must be hard-coded or something.