Review: Email by David Sparks — information and tips for getting the most out of email, by Jeff Richardson, iPhone, J.D.
An except from the original post:
The book includes general tips for working with emails, great strategies for reading, replying to and storing emails, an informative chapter on how email works and tips on fighting spam and email security. No matter what device you use for your email, all of that content is useful.
Sparks then goes deep into the Apple Mail app for the Mac, and this book will be most useful for folks who use a Mac and the built-in mail app. He also reviews many of the best programs for the Mac and apps for the iPhone/iPad that you can use to work with email, and devotes a chapter to Gmail.