How to Write a Cover Letter: A Four-Paragraph Method You Can Reuse
To write a cover letter, write four short paragraphs: one that names the role and the single strongest reason you fit it, one or two that prove that reason with specific things you have done, and one that closes by asking for the conversation. Take the evidence from your resume and the vocabulary from the job posting. Keep it under a page, address it to a person where you can, and never claim anything your resume cannot back up.
That is the whole method. The rest of this guide shows what goes in each paragraph, how to aim the letter at one posting, and how to write the second, fifth and twentieth letter without starting from a blank page each time.
What a cover letter is for
A resume is a record. A cover letter is an argument. The reader already has the list of what you did; the letter tells them which parts of it matter for this job and why.
That changes what belongs in it. A letter that retells the resume in sentences wastes the reader’s time, because they can read the resume. A letter that connects two or three of your real results to the two or three things the posting cares about most gives them a reason to read the resume closely.
If you remember one rule, make it this one: every paragraph should answer “why this person, for this job?” A sentence that would fit any application to any company can usually go.
How to write a cover letter, step by step
Step 1: Read the posting for its top three needs
Before writing anything, read the job posting and pick out the three things it asks for most. They are usually easy to find: repeated words, the first bullets under “requirements”, and anything the posting describes as “must have”.
Write those three down in the posting’s own words. If it says “stakeholder management”, use that phrase, not “working with people”. Recruiters and applicant tracking systems both look for the words they wrote.
Step 2: Match each need to one thing you have done
For each need, find one example from your own history that proves it. Good examples have three parts:
- what the situation was (the team, the system, the customers),
- what you did (your action, in a verb),
- what changed (a number where you have one, a concrete outcome where you do not).
Your resume already holds most of these. You are choosing, not inventing.
Step 3: Write the four paragraphs
Here is the structure, with what each paragraph owes the reader.
| Paragraph | Its job | Length |
|---|---|---|
| Opening | Name the role and your strongest reason to be considered | 2 to 3 sentences |
| Evidence 1 | Prove the posting’s top need with one example | 3 to 4 sentences |
| Evidence 2 | Prove the next need or two with further examples | 3 to 4 sentences |
| Close | Say what you would bring and ask for the conversation | 2 sentences |
The opening. Skip “I am writing to express my interest”. The reader knows why they are holding the letter. Start with the role and the reason instead: “I’m applying for the Data Analyst role because the last three years of my work have been building the kind of operational reporting your posting describes.”
The evidence paragraphs. One example per need, told briefly. “At my current company I rebuilt the weekly operations report in SQL and Tableau, which cut its turnaround from two days to a morning.” Specific, checkable, tied to the posting’s words.
The close. One sentence on what you would bring, one asking to talk. Keep it plain: “I’d welcome the chance to talk about how I could do the same for your team.”
Step 4: Cut it to one page
Most first drafts run long. Cut in this order:
- Sentences that repeat the resume without adding why it matters.
- Adjectives about yourself (“passionate”, “hard-working”, “detail-oriented”). Let the examples show it.
- Anything about what the job would do for you. The letter is about what you do for them.
A letter of 250 to 400 words is normal. Shorter is fine when every sentence earns its place.
Step 5: Check it against the posting one last time
Read the posting, then read your letter. Are the three needs you wrote down in Step 1 all answered, in the posting’s language? Is every claim something you could talk about for five minutes in an interview? If yes, send it.
How to address a cover letter
Use a name when you can find one. The posting, the company’s team page or a professional networking profile often names the hiring manager. “Dear Priya Shah,” is better than any generic greeting.
When you cannot find a name, address the team: “Dear Hiring Team,” or “Dear Data Team,”. Avoid “To whom it may concern”, which reads as a form letter before the first sentence.
At the top, put your name and contact details, the date, and the company name. In an email or an online form, the greeting can come first and the contact details can live in your signature.
Common mistakes that cost an interview
- The generic letter. Changing only the company name tells the reader you did the same for everyone. They can tell.
- Restating the resume. The reader has the resume. Use the letter to explain which parts matter here.
- Claims with no evidence. “Excellent communicator” means nothing on its own. “Ran the weekly update for a 12-person operations team” means something.
- Inventing to fit. Stretching a skill you do not have is the fastest way to lose an interview you would otherwise have won, because the interviewer will ask about it.
- Too long. More than a page is rarely read in full.
How to write the next cover letter faster
The first letter is the slow one. The method above makes every later letter faster, because the expensive part (finding your examples and phrasing them well) is reusable. Keep a short document of your best six to ten examples, each written as situation, action and change. For each new application, pick the three that match the new posting’s needs and re-word them in that posting’s language.
That still means reading the posting, choosing examples and rewriting paragraphs for every job. When you are applying to many roles in a week, it is the part that eats the evenings.
This is the part InstaResume does for you. You paste your background and, optionally, the job posting, and it drafts a cover letter aimed at that role, built only from what you gave it. It does not invent employers, titles or results you did not mention. You then read it, fix anything that is not quite you, and send it.
Ways to try it:
| Option | What you get | Account needed |
|---|---|---|
| Free tools | Cover letters for common roles, a few a day | No |
| Free account | 5 generations to start, with saved history | Yes, email sign-in |
| Pro | 500 generations a month | Yes |
The free tool pages cover roles such as internship, teacher and administrative assistant applications, and the full tools list has the rest.
Whichever way you draft, keep Step 5. A drafted letter is a starting point, and the check against the posting is what makes it yours.
When the manual way is enough
You do not need a tool for every letter. Write it by hand when:
- you are applying to a handful of roles you care about a great deal, and the time spent is part of the preparation for the interview;
- the role is unusual enough that no draft will be close, such as a career change where the argument itself is the hard part;
- you already have a strong letter for a very similar role and only the opening and one example need to change.
A drafting tool earns its place when volume is the problem: many applications, similar roles, and the same examples re-worded again and again.
Your cover letter should match your resume
The letter makes claims and the resume backs them up, so the two should agree. If the letter leads with stakeholder reporting, the resume’s top bullets should show it too. Our guide on how to tailor a resume to a job description uses the same read-the-posting approach for the resume side, so one read of the posting serves both documents.
A quick checklist before you send
- The role is named in the first sentence.
- The posting’s top three needs are each answered with a real example.
- The posting’s own words appear where they honestly fit.
- Every claim is something you could discuss in an interview.
- It fits on one page and is addressed to a person or a team.
- The company name is right. Check it twice, especially when reusing a draft.
Four paragraphs, three examples, one page. Write the first one carefully, keep your examples, and the next one is mostly choosing.