Be concise. Instructors are busy people, and although they are typically more than happy to help you, kindly get to your point quickly. Sign off with your first and last name, the course number, and the class time. This will make it easy for your professor to identify you.

Be polite: Address your professor formally, using the title “Professor” or “Instructor” with their last name. Depending on how formal your professor seems, use a salutation (“Dear” or “Hello” followed by your professor’s name/title (Dr. XYZ, Professor XYZ, etc.)