Email etiquette establishes your credibility and helps communicate your message. Etiquette is essential whether your email is a short message or a complex legal analysis. Practice good etiquette by using appropriate subject lines, keeping messages short, and avoiding abbreviations. Don't use all caps or emojis. Substitute a phone call or meeting when needed to avoid misunderstanding or controversy. Read articles about things to consider, tips for writing, and best practices. Study books about Online Etiquette, Email Risks, and Legal Ethics.