How to Write a Cover Letter

The ResumeWizard Team · August 2, 2026 · 6 min read

A cover letter has one job: give the recruiter a reason to open your resume with interest instead of skimming it out of obligation. Most letters fail because they restate the resume in polite filler. The letters that work make three or four specific claims, back them with numbers, and stop. Here is the structure, paragraph by paragraph.

What is the right cover letter structure?

A cover letter is four moves: a hook that proves you read the posting, evidence that you meet its core requirements, a reason you want this company, and a confident close. Every paragraph below maps to one of those moves.

The opening: a specific hook

Never open with “I am writing to express my interest in the position.” The recruiter already knows — you applied. That sentence spends your most valuable line saying nothing. Open instead with the most relevant, concrete thing you bring: a result you delivered, a problem of theirs you have solved elsewhere, or a genuine connection to their work. Name the role and company in the first two sentences so the letter is unmistakably about this job.

A strong opening, for example

“Last quarter I cut checkout abandonment by 18 percent for a marketplace doing $2M a month — the same funnel problem your posting for Senior Product Manager says you are hiring to fix. That overlap is why Acme's role stood out from every other listing I read this week.”

The middle: mirror two or three requirements with proof

Pick the two or three requirements the job description repeats or lists first — those are the ones the hiring manager actually cares about. For each, give one sentence of quantified evidence from your own work: revenue, time saved, error rates, team size, users. Use the posting's own vocabulary so the connection is effortless to see. This is the same mirroring that helps a resume pass screening, applied to prose.

The why-this-company paragraph

One short paragraph on why this company rather than any company. Reference something real: their product, a recent launch, their market, an engineering blog post, the team's stated approach. Skip flattery about being an industry leader — praise that could be pasted into any letter proves you researched nothing. One or two genuine sentences beat a paragraph of admiration.

The close: confident, not desperate

End by stating plainly that you would welcome the conversation: “I'd welcome the chance to walk you through how I'd approach your onboarding flow.” No begging, no “I hope to hear from you at your earliest convenience,” and no apology. Thank them once, sign off, and stop writing.

How long should a cover letter be?

Aim for 250–400 words — three to five short paragraphs on a single page. Under 250 words it is hard to make a specific case; past 400 you are padding, and recruiters working through a stack of applications will skim or skip it. If a sentence does not advance the argument that you fit this role, cut it. Short and specific always beats long and thorough.

How do you tailor a cover letter for each application?

Sending the same letter everywhere is the most common way to waste the effort of writing one. Keep a base version with your strongest proof points, then change three things for every application: the hook, the requirements you mirror, and the why-this-company paragraph. That is usually a ten-minute edit, not a rewrite. Reread the posting first and note the exact phrases it uses for skills and outcomes — those phrases belong in your letter and your resume. ResumeWizard's cover letter generator drafts this tailored structure from your resume and the job posting, which turns the blank page into an editing job.

Which cover letter mistakes cost you interviews?

• Restating your resume line by line — the letter should argue, not repeat; pick your two or three strongest matches and go deeper on them.
• Opening with “I am writing to express my interest” or any sentence the recruiter has read a thousand times.
• Talking only about what the role would do for you — lead with what you would do for them.
• Leaving the wrong company name in from the last application — the fastest possible rejection.
• Apologizing for missing requirements. Address a real gap once, confidently, or not at all.
• Exceeding one page. Nobody has ever been rejected for a tight, specific 300-word letter.

Before you send it, read the letter once as the hiring manager would: does every paragraph answer “why this person, for this job, at this company”? If yes, attach it as a PDF with a clean filename, paste or upload it where the application asks, and let a specific, honest 300 words do their work.

Frequently asked questions

How do you address a cover letter without a contact name?

Use the team or role: “Dear Hiring Manager” or “Dear Product Design Team” both read fine. Check the posting, the company site, and LinkedIn first — a real name is always better. Avoid “To Whom It May Concern” and “Dear Sir or Madam,” which sound dated, and never guess a name or gender from an email address.

Should you mention salary expectations in a cover letter?

Not unless the posting explicitly asks. The letter's job is to earn an interview; salary talk before anyone wants to hire you can only screen you out. If a range is required, give a researched one and move on in a single sentence. Otherwise save the numbers for the conversation, where you can actually negotiate.

Should a cover letter go in the email body or as an attachment?

Follow the application's instructions first. If you are emailing a person directly, put the letter in the body — recruiters read email instantly and open attachments reluctantly — and attach your resume as a PDF. If a portal offers an upload field, attach the letter as a PDF so the formatting survives. When in doubt, do both.

Do you need a different cover letter for every job?

Yes, but not from scratch. Keep one base letter with your strongest quantified proof, then swap the opening hook, the two or three requirements you mirror, and the company-specific paragraph for each application. Expect about ten minutes per posting. A recruiter can spot an untouched template quickly, and it signals exactly the effort it took.