E-mail etiquette guidelines include: 1. Using TO to directly address recipients, CC to indirectly address recipients, and BCC so that TO and CC recipients cannot see other addresses. 2. Replying to all recipients carefully, and replying to just the sender if only responding to them. 3. Limiting punctuation and abbreviations in formal/professional emails, and using them sparingly in informal emails. 4. Opening emails formally for business by name and informally with greetings, and closing with your contact information.

1. E-Mail Etiquette