I recently decided to see what life is like without Kaspersky Internet Security and have installed MSE. I'm concerned about receiving malware via SPAM etc. Does MSE scan emails and/or attachments? Is there anything else I can do (that is free) to minimise malware grief?
As the answer in this thread on Microsoft answers states:
So as long as MSE scans attachments before they are saved or opened you should be as safe as you would be running any other virus scanner.
Another thing to do to protect yourself while reading e-mails is to view them as plain text (rather than HTML) and make sure your e-mail client doesn't execute any scripts that may be lurking in them.