Formal and Informal Letter Examples: How to Write the Perfect Letter

Have you ever found yourself in a situation where you needed to write a letter, but didn’t know if it should be formal or informal? It can be a tricky decision to make, as the tone and language used in each type of letter can greatly differ. To help you out, we’ve compiled some examples of both formal and informal letters, which you can find below. These examples can be edited to suit your needs and will give you a clear idea of how to structure your letter. Whether it’s a job application, a thank-you letter, or just a casual catch-up with a friend, we’ve got you covered. So take a look at the examples, and let us help you write the perfect letter for any occasion.

The Best Structure for Formal and Informal Letters

When it comes to writing letters, whether formal or informal, it’s important to ensure that the structure is spot on. This not only helps to convey the message effectively but also makes the letter look professional. In this article, we will delve into the best structure for formal and informal letters, drawing inspiration from the writing style of Tim Ferris.

Formal letters

Formal letters are typically written for official purposes, such as job applications, business proposals, or complaint letters. The structure of a formal letter should be as follows:

1. Heading: This should include the sender’s address, followed by the date, the recipient’s name and address, and a salutation.

2. Introduction: This should be a brief summary of the letter’s purpose.

3. Body: This constitutes the main message of the letter, broken down into relevant paragraphs.

4. Conclusion: This should include a summary of the key points in the letter and a call to action or request.

5. Closing: The letter should be signed off in a formal manner, such as ‘Yours sincerely’ or ‘Yours faithfully,’ followed by the sender’s name.

6. Postscript (optional): This is an additional message that is often added after the signature, but it’s not necessary.

Informal letters

Informal letters are more casual in tone and are often written to friends, family, or acquaintances. The structure of an informal letter can be as follows:

1. Heading: The heading should include the sender’s address, followed by the date and a greeting.

2. Introduction: This should be a friendly greeting and a brief statement of purpose.

3. Body: This is where the main message of the letter is conveyed, often broken down into paragraphs.

4. Conclusion: The conclusion should summarize the key points of the letter and end on a positive note.

5. Closing: An informal letter can be signed off in a casual manner, such as ‘Take care,’ ‘Love,’ or ‘Best wishes,’ followed by the sender’s name.

6. Postscript (optional): An informal letter may add an additional message after the signature, such as an update or an afterthought.

In conclusion, the structure of a letter, whether formal or informal, plays a crucial role in ensuring that the message is conveyed effectively. By following the guidelines outlined above, you can write a letter that looks professional, organised, and to-the-point while also maintaining a friendly tone in informal letters.

Formal and Informal Letter Examples

Formal Letter – Job Application

Dear Hiring Manager,

I am writing to express my interest in the advertised position at your esteemed organization. I have a proven track record of success in my previous roles, and I am confident that I have the necessary skills to excel in this new position.

In my current position as a Marketing Coordinator, I have successfully planned and executed multiple campaigns resulting in a significant increase in revenue. I am also proficient in various software programs, including Adobe Creative Suite and Microsoft Office.

Thank you for considering my application. I look forward to the opportunity to meet with you in person to discuss how my experience and skills align with your needs.


John Doe

Informal Letter – Thank You Note

Dear [Name],

I just wanted to take a moment to thank you for your assistance during my recent move. Your help packing and unpacking boxes made the process much smoother and less stressful for me.

Your kindness and generosity are greatly appreciated, and I am grateful to have you as a friend. Thank you again for all that you did to make my move a success.

Warm Regards,


Formal Letter – Business Proposal

Dear Sir/Madam,

I am writing to propose a new business opportunity that I believe could be of great benefit to your organization. Our company specializes in providing customized software solutions to businesses in various industries.

We have done extensive research on your organization and have identified an area where we believe our software could significantly improve your processes and increase efficiency. We would be happy to provide a detailed demonstration of our product and discuss the potential benefits with you further.

Thank you for considering our proposal. We look forward to hearing from you soon.


Tom Smith

Informal Letter – Condolences

Dear [Name],

I was deeply saddened to hear about the loss of your [relationship]. Please accept my heartfelt condolences during this difficult time.

[Name] was an exceptional person and will always be remembered for [his/her] kindness and generosity. I will keep you and your family in my thoughts and prayers during the days ahead.



Formal Letter – Recommendation Letter

To Whom It May Concern,

I am writing to highly recommend [Name] for the [position/program/etc.] at your organization. I have had the pleasure of working with [Name] for [length of time] and can confirm that [he/she] is a hardworking, dedicated, and talented individual.

[Name] has consistently demonstrated the ability to [specific skills/achievements]. [He/she] is a quick learner and has shown a willingness to take on new challenges and responsibilities. I have no doubt that [Name] will excel in any endeavor [he/she] pursues.

Thank you for considering my recommendation. Please do not hesitate to contact me if you require any further information.


Dr. Smith

Informal Letter – Invitation

Dear [Name],

I would like to invite you to attend my [event] on [date/time]. It would mean a lot to me to have you there to celebrate this special occasion with me.

The event will take place at [location] and will include [details about the event]. I hope that you are able to attend and that we can catch up soon.



Formal Letter – Complaint Letter

To Whom It May Concern,

I am writing to express my extreme dissatisfaction with the service that I received from your organization on [date of incident]. Despite repeated attempts to resolve the issue, I have not received a satisfactory response from your customer service team.

[Details about the incident and specific problems encountered]. This experience has left me feeling frustrated and disappointed, and I believe that it is important for you to take swift action to address these issues.

I would appreciate a prompt response to this letter and a resolution to the problem at hand.


Elizabeth Johnson

Tips for Writing Formal and Informal Letters

Writing letters, both formal and informal, is an essential part of our daily lives. Whether you are writing to a friend, family member, colleague, or business acquaintance, it is crucial to follow certain tips to make your letters more effective. In this article, we will discuss some of the key tips for writing formal and informal letters.

Tips for Writing Formal Letters

Formal letters are written to convey information or make requests to individuals or organizations in a professional context. Here are some tips for writing formal letters:

  • Start with an appropriate greeting – Address the letter to the intended recipient using their name and title. For instance, “Dear Mr. Smith,” or “Dear Professor Johnson,” is more professional than starting with “Hi,” or “Hello.”
  • Use a clear and concise language – Avoid using slang or jargon that may confuse the reader. Use appropriate vocabulary for the intended audience and purpose of the letter.
  • Be brief and to the point – Stick to the main purpose of the letter and avoid irrelevant information. Keep the letter short and concise, ideally one page or less.
  • Provide relevant details – Depending on the type of letter, provide relevant details such as dates, times, and locations that support your request or convey the required information
  • Use a formal closing – End the letter with a professional closing, such as “Sincerely,” “Respectfully,” or “Yours faithfully.”

Tips for Writing Informal Letters

Informal letters are written to friends, family members, or acquaintances in a more casual context. Here are some tips for writing informal letters:

  • Start with a friendly greeting – Address the letter using a warm and welcoming tone, such as “Hi,” “Dear,” or “Hello.”
  • Use an engaging tone – Write in an engaging and friendly tone that would be appropriate for the intended recipient. Use first-person language and make the letter personal
  • Include relevant details – Depending on the purpose of the letter, include relevant details that support your message or request. For example, if you’re congratulating a friend on their graduation, mention specific achievements or memories that you shared together.
  • Provide context – Provide context around why you are writing the letter. This could be an update on your life or a request for advice.
  • End with a casual closing – End the letter with a casual closing, such as “Take care,” “All the best,” or “Talk to you soon.”

In conclusion, writing effective letters, both formal and informal, can be simple if you follow the tips provided in this article. Remember to tailor your writing style to the intended recipient and purpose of the letter, provide relevant details, and use an appropriate tone. Happy letter writing!

FAQs Related to Formal and Informal Letter Example

What is the difference between a formal and informal letter?

A formal letter is used for official correspondence and follows a specific structure and tone, while an informal letter is more casual and can be used for personal communication.

What are the key components of a formal letter?

A formal letter typically includes a header, salutation, body, closing, and signature. It also follows a specific structure and tone and is written in a professional manner.

Are there any rules for addressing a formal letter?

Yes, a formal letter should always be addressed to a specific person or organization and should include their full name and title if possible. It’s also important to use proper titles and salutations, like “Dear Mr./Mrs./Ms.”

Can an informal letter also be professional?

Yes, an informal letter can still be professional in tone and language, especially if it’s being used for a work-related matter or networking with colleagues. However, it’s important to use a more casual tone and avoid overly formal language.

What’s the best way to start a formal letter?

A formal letter should always begin with a respectful and courteous salutation, like “Dear Sir/Madam” or “To Whom It May Concern.” It’s also a good idea to reference any previous correspondence or mutual connections in the opening paragraph.

Can an informal letter include humor or jokes?

Yes, humor and jokes can be included in an informal letter, but it’s important to keep them appropriate and tasteful. It’s also a good idea to consider your audience and the context of the letter before including humor.

Are there any common mistakes to avoid when writing a formal letter?

Some common mistakes in formal letter writing include using overly casual language, failing to proofread for errors, and not following a proper structure or tone. It’s also important to avoid any offensive or inappropriate language or content.

That’s All Folks!

Well, you’ve made it to the end. I hope you found these formal and informal letter examples helpful and informative! Remember, it’s all about understanding the purpose and audience of your letter to determine the tone and format. Don’t forget to practice your writing skills regularly! Thanks for reading and I hope you’ll drop by again soon for more exciting tips and tricks!