Black thing - squeaks a fair bit
It's an email client - a bit like Outlook only more feature rich. It has a message dispatcher, though I've not used it, that allows you to manage your emails without downloading them. You can try it for free but the license is about £28. There's some nice images for it if you do download it - ask me and I'll email the file.
The way I have it set up is for Spampal to flag all the spam from all my email accounts. In The Bat! I've created a rule for each account (created one rule and copied it) that moves the spam for that account to a common folder (i.e. a folder that's not associated with any account) and deletes it from the server (so the server doesn't become clogged). I just glance at the one spam folder and delete the contents.