This is a basic issue for anyone who sends out email announcements or email newsletters. It’s crucial to your “open rate” that the subject line be compelling and engaging. One useful point here that I’ve wondered about but never heard clearly defined is the 56-character space limit. Solid guidance. Dr. EBiz is generally a good resource too…

http://www.wilsonweb.com/email/sugarman-subject-1.htm

The ConstantContact.com service’s learning center also recently published a two-part series of articles on this subject.

Meanwhile, my ebook on Internet Marketing should be completed “real soon.” Stay tuned.