The Spanish Association of Electronic Commerce and Marketing (AECEM) has published a White Paper about Electronic Commerce. The book (in Spanish) deal with interesting online marketing
practices.
Whether you have an online store or not, I recommend reading this book. You will see many ideas about how to sell online and communicate your products and services.
Section 6.9 talks about e-mail marketing in a clear and concise way. You will find many useful advices that we expand in The eMailing Experience: databases, open rates, subject line... There are four pages with very specific points to keep in mind the essence of e-mail marketing.
Tell us what you think about the book!