1) Email etiquette is important both socially and professionally. Using proper etiquette makes the sender feel good and the receiver feel respected.
2) Basic email etiquette includes using polite words like "please" and "thank you", being concise, having proper spelling and grammar, writing clear subject lines, and avoiding slang or abbreviations.
3) Other tips are using an appropriate email address, remembering to attach files, maintaining a respectful tone, being careful of confidentiality, and proofreading emails before sending.