What Is a Cover Letter? Purpose, Parts and Examples

By Peter Miller · Published October 21, 2026 · Last updated: October 21, 2026

12 min read

If you've never written one, the phrase "cover letter" can sound old-fashioned, like something you'd fold into an envelope with a typed resume. And if you've written a few, you might wonder whether anyone reads them. Both are fair questions, and I'll answer them straight.

I've screened applications where the cover letter was the reason a candidate got a phone call, and plenty where it was the reason they didn't. The letter itself isn't magic. What it says, and how quickly it says it, is what counts.

In this guide I'll explain what a cover letter is, what it's for, what goes in each part, what one looks like on the page, and when you can skip it. You'll also see a short example you can model, a few before-and-after lines, and how it differs from a resume, a CV, and a letter of interest.

If you already know what one is and just need to write it, our step-by-step how to write a cover letter guide is the better place to start.

What is a cover letter?

A cover letter is a one-page document, usually three or four short paragraphs, that you send along with your resume when you apply for a job. It's addressed to the hiring manager or the hiring team, and it explains three things:

• Which job you're applying for.
• Why you're qualified, using a few specific examples.
• Why you're interested in this particular employer.

The name comes from the days when it literally covered the resume in a mailed application. Today it's usually a PDF you upload, a text box on an application form, or the body of an email.

What a cover letter is not

It's not your resume rewritten as paragraphs. It's not a life story. It's not a list of adjectives about how hard-working you are. And it's not a place to explain every job you've ever had.

The resume is the evidence. The cover letter is the argument that tells the reader which pieces of evidence matter for this job and why.

What's the purpose of a cover letter?

A good cover letter does work the resume can't do on its own. Here are the main jobs it performs.

It connects your experience to their needs

A resume lists what you've done in a fairly neutral way. A cover letter says "here's the problem you're hiring for, and here's when I solved something like it." That connection is the most useful thing a letter does.

It explains context

Some things look odd on a resume without explanation: a gap, a move from a senior title to a junior one, a switch between industries, a relocation, a short stint at a job. One sentence in the letter can stop a reader from guessing the worst.

It shows how you communicate

For many roles, writing is part of the job. A clear, specific, error-free letter is a writing sample. A rambling one is too.

It shows you actually want this job

A letter that mentions something specific about the company, its customers, or the team signals real interest. It's a small thing, but when a manager is choosing between two similar resumes, interest can tip it.

The 5 parts of a cover letter

Almost every cover letter has the same five parts. Here's what goes in each.

1. Header

Your name and contact details at the top: city and state, phone, email, LinkedIn. Many people match it exactly to their resume header so the two documents look like a set. Below that, the date. If you're sending a formal letter, you can add the employer's name and address, but most online applications skip it.

2. Greeting

"Dear [Name]," if you know the hiring manager. "Dear Hiring Manager," if you don't. Avoid "To whom it may concern." It sounds distant.

3. Opening paragraph

Two or three sentences that name the role, mention a referral if you have one, and give the single strongest reason you fit.

Before: I am writing to apply for the position advertised on your website.
After: I'm applying for the Payroll Specialist role on your finance team. I've run biweekly payroll for 600 employees across three states for the last four years, and I'd like to bring that multi-state experience to your growing team.

4. Body paragraphs

One or two paragraphs that prove you can do the job. Pick two or three requirements from the posting and give one concrete example for each. Results and specifics beat adjectives.

Before: I am a hardworking, detail-oriented professional with excellent communication skills.
After: Last year I caught a tax-table error in our payroll system before it went live, which would have under-withheld state tax for 140 employees in Ohio. I flagged it to our provider and wrote the checklist we now use after every system update.

5. Closing and sign-off

One or two sentences on why you want to work there, a direct request for an interview, and a thank you. Then "Sincerely," or "Best regards," and your name.

What a cover letter looks like

Here's a short, complete example for a composite candidate. Notice the length: about 220 words. That's enough.

{`Maria Lopez
Phoenix, AZ | (602) 555-0187 | [email protected] | linkedin.com/in/marialopez

October 21, 2026

Dear Ms. Patel,

I'm applying for the Office Manager position at Desert Ridge Dental.
For the past five years I've managed the front office of a busy
four-chair orthodontic practice, handling scheduling, insurance
verification, and supply ordering for a team of nine.

Your posting mentions reducing no-shows and keeping the schedule full.
At my current practice, I set up text reminders two days and two hours
before each appointment and started a short-notice list for patients
who wanted earlier slots. We filled most last-minute cancellations
within the same day.

I also handle insurance pre-authorizations for every new treatment
plan, and I trained two new front-desk hires on our practice
management software last spring.

I'm interested in Desert Ridge because you're opening a second
location next year, and I've helped set up a new office before. I'd
welcome the chance to talk about how I could help with that launch.
Thank you for your time.

Sincerely,
Maria Lopez`}
              

For more full examples, see the HireFlow cover letter examples collection.

Cover letter vs resume vs other documents

People mix these up, so here's a plain comparison.

Cover letter vs resume

A resume is a structured list of your experience, skills and education, usually one or two pages of bullets. A cover letter is prose, one page, addressed to a person, and focused on one job. You send both. The resume can be reused with small edits; the letter should be tailored each time.

Cover letter vs CV

In the US, a CV (curriculum vitae) is a long academic or medical document listing publications, research and teaching. In the UK, Europe and much of the world, "CV" just means resume. Either way, a cover letter goes with it. More in CV vs resume .

Cover letter vs letter of interest

A cover letter responds to a specific job opening. A letter of interest (sometimes called a prospecting letter) goes to a company that hasn't posted a job, asking to be considered for future roles. The structure is similar, but a letter of interest focuses more on the company and the kinds of roles you'd fit.

Cover letter vs motivation letter

"Motivation letter" is common in Europe and for university or scholarship applications. It tends to focus more on why you want the opportunity and your goals, while a cover letter focuses more on what you'd bring.

Types of cover letters you might need

"Cover letter" covers a few different situations. The structure stays the same, but the emphasis shifts.

Application cover letter

The standard kind, written for a posted job. It leans hard on the posting's requirements and proves two or three of them. This is the one most people mean.

Referral cover letter

Same structure, but the referral goes in the first sentence: "Dana Kim on your analytics team suggested I apply for the Data Analyst role." A named referral is the strongest opening line you can have, so don't bury it in the last paragraph.

Career change cover letter

Here the letter does more work than the resume. You name the change directly, then show which of your past results transfer. One honest line ("I'm moving from teaching into instructional design") beats hoping the reader figures it out. Our guide on career change cover letter examples goes deeper.

Internal transfer letter

Shorter and less formal. Mention who you've worked with on the hiring team, the projects they'd know, and why the move makes sense now. Your future manager will ask around about you, so name people who'll vouch for your work.

Entry-level or internship letter

With little work history, your letter leans on coursework, projects, part-time jobs and volunteer work. Treat a class project like a job: what you built, what tools you used, what came out of it. For examples, read how to write a cover letter with no experience .

Email cover letter

When you apply by email, the email body is the letter. Cut it to four to six sentences: the role, one or two proof points, a line on why them, and a request to talk. Put the job title and your name in the subject line, and attach your resume as a PDF.

Letter of interest

Sent when there's no open job. Focus on the kind of role you'd fit, what you could help with, and a request for a short conversation. Expect fewer replies than with applications, but the ones you get are often with people who don't have a pile of competing candidates yet.

Whatever type you're writing, the test is the same. Would a busy hiring manager learn something useful about you from the first two sentences? If yes, you've done the job.

Do you still need a cover letter?

Honest answer: it depends on the application.

• Required: If the posting says to include one, include one. Skipping it can get your application filtered out.
• Optional: Send one if you have something useful to say, like a career change, a referral, a relocation, or a very close match to the role. If you'd just repeat your resume, a short targeted letter is still better than a long generic one.
• No upload field: Some application systems don't accept a letter at all. Don't force it. You can mention key points in a short message to the recruiter instead.
• Small companies and direct emails: The email itself is your cover letter. Keep it shorter, four to six sentences, and attach your resume.

Some hiring managers never read them. Others read every one. You don't know which kind you'll get, so a short, specific letter is a low-cost bet. For a deeper discussion, read should I write a cover letter for every job .

How to write one in four steps

A full walkthrough is in how to write a cover letter , but here's the short version.

• Step 1: Highlight the top three requirements in the job posting.
• Step 2: Match each to one specific thing you've done, with a result if possible.
• Step 3: Write a two-sentence opening naming the role and your strongest fit.
• Step 4: Add one line on why this employer, ask for the interview, and sign off.

Then cut it to under 400 words, read it aloud, and check the company name twice.

Common cover letter mistakes

• Copying the resume. If the reader learns nothing new, the letter wasted their time.
• Making it about you. "This role would help me grow" focuses on your needs. Lead with what you'd bring.
• Generic praise. "Your company is an industry leader" could go to anyone. Use a real, specific detail.
• Wrong name or company. The classic copy-paste accident. Always double-check.
• Too long. A full page of dense text gets skimmed or skipped. Keep it around 300 words.
• Fancy design. Columns, graphics and colored boxes can break when software reads the file. Plain and clean is safer.

I have read hundreds of letters where the best line was buried in the third paragraph. Move your strongest result to the top. If the reader only gets through two sentences, those two sentences should do the work.

Pair your cover letter with a resume that backs it up

Hiring managers usually read the letter and then check the resume. If the letter mentions a result the resume doesn't show, or uses different job titles or dates, it creates doubt.

Before you send both, run your resume through the free ATS resume checker using the same job posting. It'll highlight missing keywords and parsing problems so the resume supports your letter. If you'd like a head start on the letter itself, the cover letter generator drafts one from your resume and the posting; edit it so it sounds like you. Building a resume from scratch? Try the free resume builder , or let our team handle both documents through resume writing .

The short version

So, what is a cover letter? It's a one-page argument for why you fit one job, built from two or three real examples and a reason you want to work there.

• Lead with the role and your strongest match.
• Prove two or three requirements with specifics.
• Keep it to about 300 words and ask for the interview.

Once your letter is ready, check your resume against the same job posting so the two documents tell the same story.