The document provides guidelines for writing emails to academic professors. It discusses three example emails a student could send to a professor after missing class. Email 1 is inappropriate as it uses improper grammar, capitalization and tone. Email 2 is also inappropriate as it lacks proper punctuation and thanks. Email 3 is the most appropriate as it uses proper grammar and punctuation, identifies the class, and politely asks a question. The document then lists guidelines for communicating professionally with professors via email, such as using proper grammar, an informative subject line, respectful greeting, standard capitalization and brevity. Students are advised to identify themselves, the class and make requests rather than demands when emailing a professor.