Email is one of the most common forms of communication in school and at work. Writing a clear, professional email helps you make a good impression and get the results you need. In this chapter, you will learn the parts of an email, how to write formally and informally, and how to avoid common mistakes.
📚 KEY VOCABULARY
Term
Definition
Example Sentence
Subject Line
A brief description of the topic of an email, displayed before the email is opened.
Always write a clear subject line so the reader knows what your email is about before opening it.
Recipient
The person who receives an email or letter.
Make sure you have the correct email address for your recipient before clicking the send button.
CC (Carbon Copy)
A feature that sends a copy of an email to additional people beyond the main recipient.
I CC’d my supervisor on the email so she could stay informed about the project update.
BCC (Blind Carbon Copy)
A feature that sends a copy to additional people without the main recipients knowing.
The manager used BCC to send the announcement to all employees while keeping their addresses private.
Salutation
The greeting at the beginning of a letter or email, such as ‘Dear Professor Smith.’
Begin every professional email with a proper salutation to show respect for the reader.
Attachment
A file, such as a document or image, that is sent along with an email.
I sent my completed homework as an attachment in the email to my instructor.
Signature
The closing section of an email that includes the sender’s name, title, and contact information.
Setting up an automatic email signature saves time and looks professional in every message you send.
Closing
The farewell phrase at the end of an email or letter, such as ‘Sincerely’ or ‘Best regards.’
Use a formal closing like ‘Sincerely’ when writing to your professor or employer.
Spam Filter
A program that automatically identifies and moves unwanted or junk emails away from your inbox.
My instructor’s reply went into my spam filter by mistake, so I almost missed the important announcement.
Reply All
An email feature that sends your response to every person who received the original email.
Be careful when using Reply All — only use it when your message is relevant to everyone on the email list.
📰 READING ARTICLES
ARTICLE 1The Anatomy of a Professional Email
Email has become the primary form of professional communication in both school and the workplace. Learning how to write a well-structured email is one of the most valuable skills you can develop. A good email has several clear parts that work together to communicate your message effectively.
The first element is the subject line. A strong subject line is specific and informative. Compare “Question” with “Question About Chapter 3 Assignment Due Friday” — the second version immediately tells the reader what the email is about. A vague subject line may cause the reader to ignore your email or miss an important detail.
Next is the salutation, or greeting. In a formal email to a professor or employer, use “Dear Professor [Name]” or “Dear Mr./Ms. [Last Name].” In a less formal email to a classmate or a colleague you know well, “Hello [Name]” or “Hi [Name]” is perfectly appropriate.
The body of the email is where you communicate your main message. Keep it clear, organized, and focused. Use short paragraphs and complete sentences. Avoid slang, abbreviations like “u” for “you” or “lol,” and emoticons in professional emails. State your purpose in the first sentence, then provide the necessary details.
The closing comes at the end of the email. Common formal closings include “Sincerely,” “Best regards,” “Thank you,” and “Respectfully.” After the closing, include your full name, and if appropriate, your phone number and student or employee ID.
Finally, before you click send, always proofread your email for spelling and grammar errors. A well-written, error-free email demonstrates respect for the reader and professionalism.
ARTICLE 2Formal vs. Informal Email Writing
Not every email you write needs to sound like a formal business letter. The key is knowing your audience — understanding who you are writing to and what kind of relationship you have with them. This will help you choose the appropriate level of formality.
Formal emails are used when writing to professors, supervisors, employers, college offices, or anyone you do not know well. The language should be polite, professional, and grammatically correct. Avoid contractions like “don’t” or “can’t” in very formal writing. Use complete sentences and a respectful tone throughout.
Informal emails are used when writing to friends, family, or close colleagues. You can use a more relaxed tone, contractions, and even some humor. However, even in informal emails, you should still be clear and avoid anything that could be misunderstood.
There are some important rules that apply to all emails, regardless of formality. First, never send an email when you are angry. Write it, save it as a draft, and reread it when you have calmed down. Second, respond to emails promptly — within 24 hours for important messages. Third, keep emails focused. If you have multiple unrelated topics, it is better to send separate emails.
A common mistake many students make is writing emails to their professors in the same casual style they use for text messages. Sending an email that says “hey can u tell me when hw is due thx” to a professor creates a poor impression and may not receive a helpful response. A better version would be: “Dear Professor Garcia, I am writing to ask about the due date for the Chapter 3 assignment. Could you please clarify when it needs to be submitted? Thank you for your time. Sincerely, Maria Rodriguez.”
At Mt. SAC, developing strong email writing skills will help you communicate clearly with your instructors and be better prepared for the professional world.
💬 DIALOGUES
DIALOGUE 1Writing an Email to a Professor
Speaker
Dialogue
Student (David)
I need to email my professor about missing class tomorrow, but I am not sure how to write a professional email in English.
Tutor (Sofia)
I can help you with that. First, you need a clear subject line. What is the reason for your absence?
Student (David)
I have a doctor’s appointment that I cannot change.
Tutor (Sofia)
Good. So your subject line could be: ‘Absence from Class on [Date] — Doctor’s Appointment.’ That is specific and professional.
Student (David)
Okay, and how should I start the email?
Tutor (Sofia)
Start with a salutation like ‘Dear Professor [Last Name].’ Never use ‘Hey’ or just the professor’s first name unless they have specifically asked you to.
Student (David)
Got it. Then I explain why I am missing class?
Tutor (Sofia)
Yes. Be brief and polite. Say something like: ‘I am writing to let you know that I will be unable to attend class on [date] due to a medical appointment.’ Then ask if there is anything you can do to make up the work.
Student (David)
And how do I end the email?
Tutor (Sofia)
Use a formal closing like ‘Sincerely’ or ‘Thank you,’ followed by your full name. Always proofread before you send!
Student (David)
This is very helpful. Thank you, Sofia. I feel much more confident about writing professional emails now.
DIALOGUE 2A Reply Email at Work
Speaker
Dialogue
Coworker (Mei)
Linda, I just got an email from our manager asking all of us to reply with our project updates. Should I use Reply or Reply All?
Coworker (Linda)
That depends. If the update is relevant to everyone on the email, use Reply All. But if it is just personal information meant for the manager, use Reply.
Coworker (Mei)
My update is about the whole team’s progress, so I think Reply All makes sense.
Coworker (Linda)
Good thinking. Also, make sure you write a proper greeting at the beginning and a polite closing at the end.
Coworker (Mei)
Should I write ‘Dear Team’ since I am replying to everyone?
Coworker (Linda)
Yes, that works well. Or you could write ‘Hello, everyone.’ Keep it professional but friendly since this is a team context.
Coworker (Mei)
What about my update? Should I write it as a long paragraph or use bullet points?
Coworker (Linda)
For a team update, bullet points are usually clearer and easier to read. List the key accomplishments and any next steps.
Coworker (Mei)
And should I attach the project report too?
Coworker (Linda)
Absolutely. And mention in the body of the email that you have attached the report, so people know to look for it. Something like: ‘Please see the attached report for full details.’
❓ QUESTIONS & ANSWERS
Q1. What is the purpose of a subject line, and how should it be written?A: A subject line tells the reader what the email is about before they open it. It should be specific and informative — for example, ‘Question About Essay Assignment Due Friday’ is much clearer than just ‘Question.’ A good subject line helps the reader prioritize and respond to the email quickly.
Q2. What is the difference between CC and BCC in an email?A: CC (Carbon Copy) sends a copy of the email to additional people, and all recipients can see who was CC’d. BCC (Blind Carbon Copy) also sends a copy to additional people, but the other recipients cannot see who was BCC’d. BCC is useful for sending announcements to a large group while protecting everyone’s email addresses.
Q3. What are three characteristics of a formal email compared to an informal email?A: A formal email: (1) uses a professional salutation like ‘Dear Professor/Mr./Ms. [Name]’; (2) uses complete sentences with correct grammar and avoids slang or abbreviations; and (3) ends with a formal closing like ‘Sincerely’ or ‘Best regards.’ An informal email can use casual greetings like ‘Hi’ and a more relaxed tone.
Q4. Why is it important to proofread your email before sending it?A: Proofreading helps you catch spelling mistakes, grammar errors, and unclear sentences before the reader sees them. A well-written, error-free email makes a positive impression and shows the reader that you respect their time. Errors in a professional email can make you seem careless or unprofessional.
Q5. When should you use Reply All, and when should you just use Reply?A: You should use Reply All when your response is relevant to all the people who received the original email — for example, a team update that everyone needs to see. You should use Reply (not Reply All) when your message is meant only for the original sender, such as a personal question or private information.