MIT Advertising Lab
MIT gives solid, real-world advice on the proper way to design commercial emails.

CNN
Email remains the number one activity online, but search is now number two, after winning a fight with news.

MarketingVOX
Email list prices have to drop quite a bit further before email list rental is a consistantly profitable method.

MarketingVOX
Given the quality of most email campaigns, I should think they would be more worried about the effectiveness of the emails that are delivered.

ClickZ Network
If you send email to Michigan or Utah that contains advertising for anything illegal for minors (alcohol, tobacco, gambling, prescription drugs, or adult-rated material), you will need to compare your list against each state’s new do-not-email lists. Penalties for violations include fines and jail time. Ostensibly, the law is protect minors, not stop spam, […]