F-Secure IS spam filter?

I'm running F-Secure on a laptop with Vista fully patched (I know, I know), and using Windows Mail for email. There doesn't appear to be any indication within Windows Mail that F-Secure spam filter is active (eg no icons or 'this message is/is not spam' buttons etc). I have checked in the F-Secure options under 'Spam' it lists Windows Mail as one of the compatible email clients. But in the last two weeks I've not noticed that any received messages have been labeled as [SPAM] by the F-Secure filter.

I have had spam mail during the last couple of weeks but in checking the message headers i think it's Windows Mail's own spam filter that is doing the work.

Should i be seeing a button ribbon or icons to idicate the F-Secure spam filter is installed/active in Wildows Mail?