I'm working on emails for a fundraising campaign, and picked up a few marketing books at the library for inspiration, including this one. It's disappointing. My normal routine with library books is to hoard them through two renewals, until I start getting fined (sorry, librarians! I'm trying to mend my ways), but I returned this one within days.
I was looking for concrete ideas & case studies on how to increase interaction & conversion. This book, however, focuses heavily on the technical side of email marketing. Which just seems out-of-date, now that we have ever-improving services like Mailchimp & Constant Contact that handle the bulk of email marketing's technical challenges. Another library book I'm finding much, much more useful is Chris Baggott's Email Marketing by the Num8ers.