At the risk of sounding paranoid, be careful what you put in emails.
The government watches.
Don't forget the old FBI Carnivore program back in the 1990's, either.
http://news.cnet.com/8301-13578_3-57552225-38/senate-bill-rewrite-lets-feds-read-your-e-mail-without-warrants/?part=rss&subj=news&tag=title
- John