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What is a letter of introduction and how to write one

A letter of introduction is a networking letter that helps you connect with potential partners, either for yourself or on behalf of a trusted contact.

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A person sends a letter of introduction to another person.

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What is a letter of introduction?
How to write a letter of introduction
Five types of letters of introduction
How is a letter of introduction different?
Frequently asked questions

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Did you know that 85% of jobs are filled through networking? Yet even seasoned professionals sometimes struggle with the first outreach. A letter of introduction bridges that gap by formally connecting two parties and setting the stage for fruitful collaboration. Whether you're reaching out to a potential employer, introducing yourself to a new client, or connecting two professionals, knowing how to write a letter of introduction can make all the difference. It’s a simple yet powerful way to open doors, build relationships, and set the tone for future communication.

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What is a letter of introduction?

A letter of introduction is a formal correspondence used to present yourself—or someone you know—to a potential employer, client, or partner. Unlike a cover letter, which accompanies a resume for a specific job, an introduction letter focuses on making a connection that could lead to future opportunities.

People and businesses turn to introduction letters in situations such as:

A consultant introducing herself to a prospective client.
A sales representative connecting two complementary vendors.
An executive recommending a colleague for a board position.
A corporation announcing its services to a newly acquired subsidiary.

If you're simply exploring companies and want to find out more about potential opportunities, then a letter of interest might be a better fit.

In each scenario, the goal is the same: establish credibility, explain mutual value, and open a communication channel. Because first impressions matter, many professionals convert their letters to PDF for a polished look before sending, often with the help of free online tools, such as an online PDF editor.

The parts of a letter of introduction are shown on a document: heading, greeting, opening paragraph, body paragraphs, closing & signature.

How to write a letter of introduction.

Writing an effective introduction letter is straightforward when you break it into five key parts:

Heading. Include your contact information and the date. If you are writing on behalf of someone else, list that person's details.
Greeting. Address the recipient by name whenever possible. A personalized greeting signals that you have done your homework.
Opening paragraph. State your connection to the recipient and the purpose of your letter.
Body paragraphs. Provide relevant background, highlight achievements or solutions, and explain the value of connecting.
Closing and signature. Thank the recipient for their time, outline clear next steps, and sign with your full name and title.

Tips on how to write a letter of introduction

Once you've outlined the key sections of your letter and followed the basic writing steps, it's time to refine your message. A few thoughtful adjustments can make your introduction more engaging, your tone more professional, and your overall letter more effective. Here are some practical tips to help you write a letter of introduction that stands out for the right reasons.

Personalize the greeting. Avoid generic openers like "To whom it may concern."
State connection and purpose quickly. The first paragraph should make it crystal clear why you are writing.
Keep the body concise and mutually beneficial. Focus on value for both sides.
End with actionable next steps. Suggest a meeting time, share contact details, or ask permission to follow up.
Convert to PDF before sending. Acrobat preserves formatting across devices.
Use Adobe's Word to PDF converter for quick conversions.

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Three different people exchange letters of introduction.

Five types of letters of introduction.

1. Business networking letter of introduction

A variation focused on expanding professional circles, seeking mentorship, or fostering collaborations.

"I noticed your presentation on sustainable supply chains at the Global Logistics Forum and would love to exchange insights on green warehousing strategies."

2. Job referral letter of introduction

A mutual contact writes this letter to recommend a candidate for a specific role, emphasizing measurable outcomes.

3. Teaching job letter of introduction

Educators use this version to introduce themselves to principals or hiring committees ahead of vacant positions.

4. Client or vendor introduction

Companies leverage this letter to pitch products or services to prospects, opening with a pain point the recipient likely faces.

5. Company-to-company partnership introduction

Organizations exploring joint ventures or partnerships emphasize complementary strengths and propose next steps.

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How is a letter of introduction different?

While a letter of introduction shares similarities with documents like cover letters and referral letters, it serves a distinct purpose. Understanding how it differs from these other formats can help you choose the right approach for your situation and ensure your message lands as intended. Let’s break down what sets it apart.

Letter of introduction

Purpose: Establish a new connection and outline mutual benefit

Length: 1 page

Audience: Potential employer, client, or partner

Timing: Before an opportunity formally exists

Cover letter

Purpose: Demonstrate suitability for a specific job opening

Length: 1 page

Audience: Hiring manager or recruiter

Timing: When applying for a posted job

Reference letter

Purpose: Endorse an individual's skills and character

Length: 1–2 pages

Audience: Third-party decision maker

Timing: After an interview or request

Frequently asked questions.

How long should a letter of introduction be?

Most effective introduction letters fit on a single page—about 300 to 400 words.

Can you email a letter of introduction instead of mailing it?

Yes. Email is now the standard delivery method. Attach a PDF version or paste the content into the email body.

Is a letter of introduction the same as a networking email?

They overlap, but a formal introduction letter typically includes structured headings and a signature block.

How formal should the tone be?

Match the recipient's industry and culture. When in doubt, err on professionalism.