A well-written English letter follows a predictable structure: your address at the top, the date, the recipient’s address, a greeting, the body of your message, and a closing with your signature. Whether you’re writing a formal business letter or a personal note, mastering this format gives your writing a polished, professional look that readers immediately recognize and trust.
The Parts of an English Letter, in Order
Every formal English letter has the same basic components, arranged from top to bottom on the page:
- Your address: Write your street address, city, and postal code at the very top. Do not include your name here, since it appears at the bottom with your signature.
- Date: Place this one line below your address. Write the month in full rather than using numbers only. In American English, the format is “October 1, 2025.” In British English, the day comes first: “1 October 2025.”
- Recipient’s address: Skip a line after the date, then write the full name and address of the person you’re writing to. Include a title like Mr., Ms., Mrs., or Dr. before their name.
- Salutation (greeting): Start with “Dear” followed by the person’s title and last name, then a colon in American English or a comma in British English. For example: “Dear Mr. Patel:” or “Dear Ms. Chen,”
- Body: The main text of your letter, organized into paragraphs.
- Closing: A short sign-off phrase like “Sincerely” or “Thank you,” followed by a comma.
- Signature and printed name: Leave about four blank lines after the closing for a handwritten signature, then type your full name below.
If you’re sending documents along with the letter, such as a resume or an invoice, type “Enclosures” one line below your printed name to signal that additional pages are included.
Choosing a Salutation
The greeting sets the tone of the entire letter. When you know the recipient’s name, use their title and last name: “Dear Dr. Johnson:” is standard and safe. If you know the person well and normally call them by their first name, “Dear Lucy:” is acceptable in professional correspondence.
When you don’t know the specific person’s name, you have a few options. “Dear Hiring Manager:” works for job applications. “Dear Sir or Madam:” is more traditional but increasingly seen as outdated. “To Whom It May Concern:” is the most generic option and best reserved for letters that might be read by multiple people, like a reference letter.
For informal letters to friends or family, the rules relax. “Hi David,” or “Hello Sarah,” are perfectly natural.
Writing the Body
The body is where your message lives, and a clear structure keeps the reader on track. Start your first paragraph with a brief, friendly opening sentence, then state the main reason you are writing. Something like: “Thank you for your letter regarding the project timeline. I am writing to request a two-week extension on the delivery date.”
In the paragraphs that follow, provide the details, background information, or supporting reasons the reader needs. Keep each paragraph focused on one idea, and keep sentences relatively short. If English is not your first language, shorter sentences help you avoid grammar mistakes and make your meaning clearer.
Your final paragraph should restate the purpose of the letter briefly and, if appropriate, request a specific action. For example: “I would appreciate your response by Friday, March 14” or “Please let me know if you need any additional information.” This gives the reader a clear next step.
Opening Phrases for Common Situations
The first sentence often feels like the hardest. Here are reliable openings depending on the type of letter you’re writing:
- Replying to a letter or email: “Thank you for your letter regarding…” or “In reply to your letter of 8 May,…”
- Making a request or inquiry: “I am writing to inquire about…” or “I received your address from [source] and would like…”
- Following up: “We recently wrote to you about…”
- Informal letters: “I wanted to let you know that…” or “Thanks for your email, it was great to hear from you.”
Choosing a Closing
Your closing should match the formality of your salutation. For formal or business letters, standard options include “Sincerely,” “Respectfully,” “Yours faithfully” (British English, when you don’t know the recipient’s name), or “Yours sincerely” (British English, when you do). “Thank you” also works well when you’ve made a request.
For less formal letters, “Best regards,” “Kind regards,” or simply “Best,” are widely used in professional settings. For personal letters, “Warmly,” “With love,” or “Take care,” are natural choices.
One important rule: capitalize only the first word of the closing. Write “Thank you,” not “Thank You.” And if you used a colon after the salutation (as in American business style), place a comma after your closing phrase.
Block Format vs. Modified Block Format
Most English letters use one of two layouts. In block format, everything is aligned to the left margin. Your address, the date, the recipient’s address, the salutation, every paragraph, and the closing all start at the left edge. This is the most common format for business letters because it looks clean and requires no extra formatting decisions.
In modified block format, the date and closing are shifted to the center of the page (or slightly right of center), while the body paragraphs and recipient’s address remain left-aligned. This format has a slightly more traditional look.
In both formats, paragraphs are single-spaced with a blank line between each one. Do not indent the first line of a paragraph. Use one-inch margins on all sides for a balanced appearance on the page.
American vs. British English Differences
If you’re writing to someone in the United States, the United Kingdom, Australia, or another English-speaking country, a few small formatting differences are worth knowing.
Dates are the most visible difference. American English puts the month first: “January 15, 2025.” British English puts the day first: “15 January 2025.” Using numbers only (like 01/15/2025 vs. 15/01/2025) can cause confusion, so writing out the month name is always the safest choice in a letter.
Punctuation around quotation marks also differs. American English places commas and periods inside quotation marks, while British English typically places them outside unless they are part of the quoted sentence. In the salutation, American business letters use a colon (“Dear Mr. Smith:”) while British letters use a comma (“Dear Mr Smith,”). You may also notice that British English often drops the period after titles like Mr and Mrs.
Neither style is more “correct” than the other. The key is to be consistent throughout your letter. Pick one style and stick with it.
A Quick Example
Here is a short formal letter using American block format, so you can see all the parts together:
123 Main Street
Springfield, IL 62701
October 15, 2025
Ms. Sarah Thompson
Director of Admissions
Greenfield University
456 College Avenue
Greenfield, OH 45123
Dear Ms. Thompson:
I am writing to request information about the application process for the Master of Education program. I received your address from your university’s website and would like to learn more about admission requirements and deadlines.
I completed my undergraduate degree in English Literature in 2022 and have been working as a high school teacher for three years. I am particularly interested in your curriculum development concentration.
I would appreciate any materials you could send regarding the program. Please let me know if there is anything else you need from me. Thank you for your time.
Sincerely,
James Carter
Tips for Clear, Natural English
Keep your sentences direct. Instead of “I am writing this letter in order to inform you of the fact that I will be unable to attend,” write “I am writing to let you know I cannot attend.” Shorter sentences sound more confident and are easier to understand.
Use transition words to connect your ideas. Phrases like “In addition,” “However,” “For this reason,” and “As a result” help guide the reader from one point to the next. But don’t overuse them. One transition per paragraph is usually enough.
Read your letter out loud before sending it. If a sentence sounds awkward or too long when you hear it, rewrite it. This simple habit catches errors that spell-checkers miss and helps your writing sound natural. If you’re writing in English as a second language, this step is especially valuable because it trains your ear for how English sentences flow.