Part of the Business English Series
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Key Takeaways
- A professional email has five clear parts: subject line, salutation, body, closing, and signature.
- The subject line should be specific and informative — never leave it blank or write "Hello".
- Match your tone to your relationship with the reader: formal for new contacts, semi-formal for colleagues you know well.
- Keep the body concise — state your purpose in the first sentence and use short paragraphs.
- Common mistakes include overly casual language, missing context, and burying the key request at the end.
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Writing a professional email in English requires more than good grammar. It demands an understanding of register (how formal or informal your language is), structure (how to organise your message), and conventions (the phrases and formulas that native speakers recognise as professional). Whether you are emailing a new client, following up on a meeting, or making a request to a senior colleague, this guide gives you the language tools to do it confidently.
The Structure of a Professional Business Email
Every professional email has the same five structural components. Understanding each one helps you write emails that are clear, complete, and easy for the reader to act on.
To: j.smith@company.com
Subject: Q3 Marketing Report — Action Required by Friday 20 June
Dear Ms Smith,
I am writing to follow up on our discussion at last Tuesday's meeting regarding the Q3 marketing report. As agreed, I would be grateful if you could send me the final figures by Friday 20 June so that I can incorporate them into the board presentation.
Please do not hesitate to contact me if you have any questions.
Many thanks,
David Chen
Marketing Director | Acme Ltd
d.chen@acme.com | +44 7700 900123
- Subject line: Specific, informative, and action-oriented. State the topic and — if relevant — the deadline or required action.
- Salutation: "Dear [Name]," for formal emails; "Hi [First name]," for semi-formal.
- Body: State your purpose clearly in the first sentence. Use short paragraphs (3–5 lines maximum). Separate different topics into separate paragraphs.
- Closing: A polite sentence offering further help or indicating next steps.
- Signature: Your full name, job title, company, and contact details.
Formal vs Semi-Formal Tone
Choosing the right tone is one of the most important — and most commonly misjudged — aspects of business email writing. Use the table below to calibrate your language.
| Situation | Tone | Example |
|---|---|---|
| First contact with a new client or senior executive | Formal | "Dear Mr Johnson, I am writing to enquire about…" |
| Established client or professional contact | Semi-formal | "Hi Sarah, I wanted to follow up on…" |
| Close colleague on the same team | Informal | "Hey Tom, quick question about…" |
| Legal, financial, or compliance matters | Always formal | "I am writing to formally notify you that…" |
| Complaint or difficult message | Formal/neutral | "I am writing to express concern regarding…" |
Pro tip: When in doubt, go one level more formal than you think is necessary. It is always easier to relax your tone in a follow-up email than to repair the impression made by an email that was too casual.
Opening Phrases and Salutations
The opening of your email sets the tone for everything that follows. Here are the most useful options, from most to least formal.
Formal Salutations
- "Dear Mr / Ms / Dr [Surname]," — use when you know the person's name and title.
- "Dear Sir or Madam," — when you do not know the recipient's name.
- "To Whom It May Concern," — for letters or emails sent to an organisation rather than a specific person.
Semi-Formal and Informal Salutations
- "Dear [First name]," — professional but friendly; appropriate for most business contexts.
- "Hi [First name]," — casual, suitable for colleagues and clients you correspond with regularly.
- "Hello [First name]," — neutral; slightly more formal than "Hi".
Formal Opening Lines
- "I am writing to enquire about / inform you of / request…"
- "Further to our telephone conversation on [date]…"
- "I am writing with reference to your email of [date]…"
- "Thank you for your email of [date] regarding…"
- "I hope this email finds you well." (semi-formal; now considered slightly formulaic — use sparingly)
Making Requests Politely
Requests are one of the most frequent email tasks. The key is to be clear about what you need, polite in how you ask, and specific about timing. Compare these structures:
Too direct: "Send me the report by Friday."
Polite and professional: "I would be grateful if you could send me the report by Friday 20 June."
Useful Request Phrases (Most to Least Formal)
- "I would be grateful if you could…"
- "I would appreciate it if you could…"
- "Could you please…?" (very versatile — works in almost any context)
- "Would it be possible for you to…?"
- "I was wondering if you could…"
- "Please could you…?" (semi-formal)
- "Could you…?" (informal)
Pro tip: Always state your reason when making a request, even briefly. "I would be grateful if you could send the figures by Friday, as I need them for the board presentation" is more likely to receive a prompt response than a bare request without context.
Responding to Emails
How you respond to an email signals your professionalism as much as how you initiate one. These phrases help you acknowledge, agree, disagree, or clarify — politely and clearly.
Acknowledging and Confirming
- "Thank you for your email. I confirm that…"
- "I can confirm that the meeting is scheduled for…"
- "I am happy to confirm that…"
- "I write to acknowledge receipt of your letter dated…"
Agreeing and Approving
- "I am pleased to confirm that we agree with your proposal."
- "That works well for us. We look forward to…"
- "We are happy to proceed on those terms."
Declining and Disagreeing Diplomatically
- "Thank you for your proposal. Unfortunately, we are unable to accept the current terms."
- "I appreciate your offer; however, we have decided to…"
- "I am afraid that the proposed deadline is not feasible on our end. Could we discuss an alternative?"
Closing Phrases and Sign-offs
The closing paragraph should always indicate the next step and offer further help. The sign-off should match the formality of the salutation.
Closing Lines
- "Please do not hesitate to contact me if you have any questions."
- "I look forward to hearing from you."
- "I look forward to your reply at your earliest convenience."
- "Please feel free to call me on [number] if you would prefer to discuss this by phone."
| Sign-off | Level of formality | When to use |
|---|---|---|
| Yours faithfully, | Very formal | When salutation is "Dear Sir or Madam" |
| Yours sincerely, | Formal | When you know the recipient's name |
| Kind regards, | Semi-formal | Most professional emails |
| Best regards, | Semi-formal | Regular business contact |
| Many thanks, | Semi-formal | When you are grateful for something specific |
| Best, | Informal | Close colleagues or frequent correspondents |
Common Mistakes to Avoid
Top 6 Business Email Mistakes
- Vague subject lines: "Hello" or "Question" tells the recipient nothing. Be specific: "Budget Approval Request — Q4 Campaign".
- No clear purpose: State why you are writing in the very first sentence. Do not make the reader guess.
- Burying the key request: Put the most important information or action item early — never at the very end.
- Overcasual language: Contractions (I'm, can't), slang, and exclamation marks are inappropriate in formal emails.
- Replying without reading fully: Always read the entire email before responding to avoid missing key points.
- No signature: Always include your full name, title, and contact details, even in short replies.
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Browse All Exercises →Frequently Asked Questions
What is the correct way to start a formal email in English?
Begin with "Dear Mr / Ms / Dr [Surname]," if you know the recipient's name. If you do not, use "Dear Sir or Madam," or "To Whom It May Concern,". Follow the salutation with a comma, then start the body of the email on the next line. In the opening sentence, state your purpose clearly: "I am writing to enquire about…" or "I am writing with reference to…".
What is the difference between 'Yours faithfully' and 'Yours sincerely'?
"Yours faithfully" is used when you have begun the email with "Dear Sir or Madam" (i.e. you do not know the person's name). "Yours sincerely" is used when you have used the recipient's name in the salutation (e.g. "Dear Ms Johnson"). This distinction is a British English convention; American English typically uses "Sincerely," for both cases.
How formal should a business email be?
The level of formality depends on your relationship with the recipient and the subject matter. First contact with new clients, senior executives, or legal/financial matters always require formal language. Regular correspondence with colleagues you know well can use semi-formal language ("Hi [name]", "Kind regards"). When in doubt, err on the side of formality — it is easier to relax your tone later than to repair an impression of unprofessionalism.
How long should a professional email be?
As short as possible while conveying all necessary information. Most professional emails should be between 50 and 200 words. State your purpose in the first sentence, provide any essential context in the next 1–2 paragraphs, and close with a clear next step. If you find yourself writing more than 300 words, consider whether a phone call or meeting might be more efficient, or whether you can move detailed information to an attachment.
Can I use contractions (I'm, don't, can't) in business emails?
In formal business emails, contractions are generally avoided. Use "I am", "do not", and "cannot" instead. In semi-formal emails to colleagues or established contacts, contractions are acceptable and can make the email feel more natural and less stiff. The key is consistency: do not mix very formal and very casual language in the same email.
How do I politely follow up on an unanswered email?
Wait at least 2–3 business days before following up. Open with a polite acknowledgement: "I am writing to follow up on my email of [date] regarding [topic]. I understand you are likely very busy, but I wanted to check whether you had the opportunity to review my request." Avoid phrases like "as I mentioned before" which can sound passive-aggressive. A clear subject line like "Follow-up: [original subject]" helps the recipient locate your previous message.
What is a CC and BCC in email, and when should I use them?
CC (carbon copy) sends a visible copy of the email to additional recipients, typically to keep people informed without requiring them to act. BCC (blind carbon copy) hides the additional recipient's address from others — use it when emailing a large group to protect individual addresses, or to discreetly copy in a manager. Avoid unnecessary CC'ing as it creates inbox clutter; only include people who genuinely need to see the information.
How should I write an email to someone I have never met?
Introduce yourself briefly in the first sentence: "My name is [Name]; I am [role] at [Company]." Then state clearly why you are contacting them and what you need. Establish credibility by mentioning a connection if you have one ("I was given your contact details by [Name]"). Keep it concise — first-contact emails should be especially brief, as the recipient has no existing reason to invest time in a long message from an unknown sender.
What tone should I use when writing a complaint email in English?
Stay factual, calm, and formal. Open by stating the problem clearly without emotional language: "I am writing to draw your attention to an issue I experienced with [product/service] on [date]." Describe what happened, what you expected, and what outcome you are seeking. Close with a reasonable deadline: "I would appreciate a response by [date]." Angry or aggressive language almost always reduces the chances of a satisfactory resolution.
Is 'Kind regards' or 'Best regards' more professional?
Both are acceptable semi-formal sign-offs and are interchangeable in most business contexts. "Kind regards" is slightly warmer and is widely used in British business English. "Best regards" is common in both British and American contexts. "Regards" alone is slightly more neutral and can feel slightly curt. For very formal correspondence, "Yours sincerely" or "Yours faithfully" remain the standard choice.