Who you send them too, other than your lawyer doesn't protect them from discovery. See Jwz's rant on the badattitude list [1] about lawyers and discovery and companies having to pay after the fact. Talking to people face to face is good, both from a legal protection standpoint and from a relationship building standpoint.
Exactly. I tend to assume that any email I write might eventually wind up permanently plastered on the net somewhere. Face-to-conversation is not only safer but a lot more satisfying.
[1] http://www.jwz.org/gruntle/rbarip.html