Informal Letters and Emails in English

Writing casually to friends, family, or close colleagues is a fundamental skill for connecting personally. While formal writing follows strict rules, informal writing thrives on warmth, personality, and the rhythms of spoken conversation. Mastering this style allows you to strengthen relationships and communicate comfortably in everyday situations, from a quick email to a cousin to a longer letter to an old friend.

What is Informal Writing?

Informal writing is the style you use when communicating with people you know well in a personal context. Its primary purpose is to maintain or build a personal relationship rather than to convey official information. This style is appropriate for letters and emails to friends, family members, close colleagues, and acquaintances in non-business scenarios. The key distinction lies in the relationship; if you are on a first-name basis and share a personal connection, informal writing is likely suitable. In contrast, you would use formal writing for official complaints, job applications, academic papers, or communications with authorities or senior professionals you don't know personally.

Hallmarks of the Informal Style

The informal style is characterized by several consistent features that mimic relaxed, spoken English. Recognizing and using these will make your writing sound natural and friendly.

Conversational Tone and Contractions: The tone should feel like a chat. You can use slang, idioms, and humor where appropriate. Crucially, use contractions like I’m, you’re, can’t, won’t, and it’s. Avoiding contractions is a hallmark of formal writing and will make your informal message sound stiff and distant.

Phrasal Verbs and Common Expressions: Prefer phrasal verbs (verb + preposition/adverb) over their more formal, often Latinate, equivalents. For example, use find out instead of discover, go up instead of increase, or get together instead of meet. You should also use common informal expressions like How’s it going?, Thanks a million, No problem, or Talk soon.

Personal Pronouns and Direct Questions: Write as you speak, using I, you, we, and us frequently. Ask direct questions to engage the reader: “Did you see that new film?” or “When are you free to call?” This creates a dialogue rather than a monologue.

Structure of an Informal Letter or Email

While flexible, a well-structured informal message has clear parts that guide the reader comfortably.

The Greeting (Salutation): Start with an informal greeting. Common choices include Hi [First Name], Hello [First Name], Hey [First Name], or even just [First Name] followed by a comma. For very close friends or family, you can use affectionate terms like Dear Mom, Dear Uncle John, or My dearest [Name].

The Opening Paragraph: Begin by acknowledging your relationship or the reason for writing. Reference a previous contact, ask about the other person’s life, or make a friendly comment. Examples: “It was so great to hear from you last week.” or “How are things in Madrid? I hope you’re enjoying the spring weather.” This establishes a personal connection immediately.

The Body: This is the main content, where you share news, tell stories, or ask questions. Organize your thoughts into short paragraphs, each covering a different topic or story. Use linking words common in speech like Anyway, So, Well, By the way, and Also to transition between ideas smoothly.

The Closing Paragraph: Signal that you are finishing the message. Express good wishes, reiterate your reason for writing, or mention future contact. For example: “I can’t wait to hear all about your trip.” or “Well, that’s all my news for now. Write back when you have a moment.”

The Sign-Off (Complimentary Close): End with a casual closing. Choose from a range of friendly options followed by your first name:

• Best,
• Cheers,
• Take care,
• Love, (for close friends/family)
• All the best,
• Thanks again,
• Talk to you soon,

Key Differences from Formal Writing

Understanding what informal writing is not is just as important. Here’s a quick comparison of critical differences:

Common Pitfalls

Even when trying to be casual, learners often make a few predictable mistakes. Being aware of these will help you avoid them.

Being Overly Formal or Abrupt: The most common error is using a formal tone in an informal setting. Writing “I am writing to inform you that I have received your correspondence” to a friend is jarring. Instead, write “Got your letter – thanks!” Conversely, don’t be so abrupt that you seem rude. A one-line email like “Send me the address.” lacks the social warmth expected in personal communication; add a greeting and a polite frame.

Mixing Styles Inconsistently: Consistency is key. If you start with “Hey Tom!” but end with “Yours sincerely,” you create confusion. Similarly, avoid mixing formal vocabulary (commence, purchase) with informal grammar and contractions (I’m, we’ve). Choose one register and maintain it throughout the message.

Neglecting Basic Punctuation and Clarity: Informal doesn’t mean sloppy. While you can use exclamation points or ellipses (...) to convey emotion, you must still use periods, capitals, and paragraph breaks for clarity. A giant block of text with no punctuation is difficult to read, no matter how casual the tone. Always proofread to fix major errors.

Summary

• Use informal writing for personal correspondence with people you know well, prioritizing relationship-building over rigid protocol.
• Embrace a conversational style by using contractions, phrasal verbs, direct questions, and a friendly tone that mirrors speech.
• Structure your message with a casual greeting (Hi [Name]), a personal opening, a clear body, a warm closing paragraph, and a sign-off like Best or Cheers.
• Avoid common mistakes like mixing formal and informal styles, being overly abrupt, or neglecting basic punctuation that ensures clarity.
• Remember the core difference: Formal writing is for official, distant, or professional contexts, while informal writing is for personal connection.