I just attended an internet marketing seminar based upon the principles of e-mail marketing. I came away with a bunch of great information that I will be able to implement immediately. I was surprised to hear about things I was doing wrong and how many other businesses were in the same boat. I am not going to lay the details of what I learned out here but I will recommend that you do some research about the best strategies for email marketing. Here are some links to get you started. Good luck!

http://www.brightwavemarketing.com/

http://www.silverpop.com/index.html