Exclamation [Q] Disable e-mail preview (it's virus prone)

How is possible disable e-mail preview? As preview i intend the first two rows of e-mail text under the e-mail subject.
I become aware that it's the second time a virus send with my windows live e-mail account to all (hub) contacts an e-mail. I have notice first because i receive a few of "delivery service error" and second from my (not happy) friends.

wp7 e-mail app doesn't have the basically operation "block sender". It's possible that always MS and virus come together

For now i have disable sync of my "windows live" account