How to email a professor about an assignment
The subject line, greeting, and tone professors expect — with copy-paste templates for submitting, extensions, and late work.
Last updated June 1, 2026
Emailing a professor feels high-stakes because the format is stricter than a text but looser than a cover letter. Get the subject line and greeting right and the rest is easy. Here's the structure, plus templates you can copy.
The anatomy of a good email
Professors read fast. Give them what they need in the first two lines:
- Subject line: course code + what it's about (e.g. 'ENG 210 — Essay 2 submission')
- Greeting: 'Dear Professor [Last name],' — not 'Hey'
- First sentence: who you are and which class/section
- The ask or the attachment, stated plainly
- Sign-off: 'Best,' or 'Thank you,' + your full name and student ID if relevant
Template: submitting an assignment by email
Subject: BIO 101 — Lab Report 3 submission Dear Professor Rivera, I'm Jordan Lee from your BIO 101 Tuesday section. Please find my Lab Report 3 attached as a PDF, submitted ahead of the 11:59 PM deadline tonight. Let me know if it doesn't come through clearly. Thank you, Jordan Lee (Student ID 00481923)
Template: asking for an extension
Subject: HIST 220 — Extension request for Essay 2 Dear Professor Osei, I'm Sam Carter from your HIST 220 section. I've been dealing with [brief, honest reason] and am worried I won't do the Essay 2 assignment justice by Friday. Would it be possible to have until Monday? I completely understand if not, and I appreciate your time. Best, Sam Carter
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Frequently asked questions
How do I start an email to a professor?+
Use 'Dear Professor [Last name],' then a one-line intro of who you are and which class. Skip 'Hey' and 'Hi there' — they read as too casual to someone grading you.
How do I submit an assignment by email?+
Attach it as a PDF, use a clear subject line with your course code, state in one line that it's your submission for [assignment] by the deadline, and sign with your full name. Email yourself a copy as proof.
Should I attach a PDF or Word doc?+
PDF unless the professor asked for an editable Word doc. PDFs keep your formatting identical on every device.