Not sure how to write an email to a professor or teacher? You're not alone. Many students feel awkward or stressed about sending emails to instructors, especially when they don’t know what to say or how formal to be. Whether you're asking for help, explaining an absence, or requesting a letter of recommendation, getting the format and tone right matters. In this guide, we'll break down how to write an email to a teacher or professor as a student in 2025.