The document provides guidance on writing effective action alerts through email. It discusses why email is an important communication tool, when to send emails, who the target audience should be, and how to structure emails with compelling subject lines, call-out text and images, hooks to catch attention, explanations of the issue and opportunity for action, clear theories of change, direct asks, and movement stories. The document emphasizes testing emails and focusing the content and asks to motivate the target audience to take the desired action.