If I can make a suggestion, if you are sending marketing type emails or emails to more than a couple of people, you should consider sending these emails by BCC’ing everyone. In the TO: line, put your own email address and then everyone else in the BCC line. This ensures two things:
1. That folks don’t know who the other recipients are. Unfortunately, some people will use this information in the future to send salesy/spam types of email – it happens…
2. Viruses that infect a persons inbox love emails like this because it gives it a few dozen targets to send viruses to…
Just my .02 cents.