E-mail etiquette is important for professional communication. As e-mail usage grows, basic etiquette rules should be followed to set an appropriate tone. Proper e-mail etiquette includes keeping messages brief, using appropriate greetings and closings, checking for errors, and maintaining a positive tone. Following etiquette shows professionalism and can help avoid conflicts. While e-mail is generally less formal than letters, it is more formal than phone calls. Adhering to general formatting guidelines and etiquette rules helps ensure effective electronic communication.