This document provides tips for proper email etiquette. It recommends checking your organization's email policy, thinking carefully about message content before sending, ensuring relevance and politeness. It advises being concise by trimming quoted text and attachments, using subject lines and signatures appropriately, and being understanding of others. Things to avoid include sending messages in anger, keeping unnecessary mail, copying long messages without adding content, using all caps or excessive punctuation, irrelevant messages, large attachments without permission, spamming, arguments, insults, unsuitable content and over-elaborate signatures.