Asking this now because I've been assuming and it just struck me yesterday 'assuming' with a computer wasn't terribly bright.
I'm using Thunderbird rather than Windows 7's mail program. Is there a way to have Microsoft Security Essentials check incoming mail as it downloads? Or if not, after?
I'm asking because most programs on my comp can be scanned by MSE by right clicking and getting that option from the list. My mail folders in Thunderbird don't have this option though it seems I can scan the desktop icon and Programs icon from Start. Even there, though, is it actually scanning my mail for viruses?

Should I be using Windows Live Mail instead of my beloved Thunderbird?