What is a cover letter for, and do you still need one? (2026)

A cover letter is a short letter that travels with your resume and asks an employer to consider you for one specific job. It sounds like a formality, and in 2026, with applications sent in a click and AI-written letters everywhere, it’s fair to ask whether anyone still reads them.

Sometimes nobody does. But when someone does, the letter is the only part of your application written for that reader and that job. This post covers what a cover letter adds, when you need one and when you can skip it, how US and UK habits differ, what recruiters look for, and how to use AI without ending up with a letter that could have been sent by anyone.

What a cover letter is for

Your resume answers “what have you done?”. The letter answers the questions a list of jobs can’t: why this role, why this employer, and why you. Berkeley’s career center puts the purpose in three parts: introduce yourself, expand on the experience in your resume as it relates to the job description, and explain why you want to work for that organization (Berkeley Career Engagement).

In practice, a good letter does three things the resume can’t:

• Motivation. Why you want this job and not just a job. A resume can’t say you have followed a company’s product for years or that you want to move from agency work to an in-house team.
• Fit. It picks the two or three requirements that matter most in the posting and points to the proof. The resume holds the facts; the letter connects them to what this employer asked for.
• Context. Anything that would look odd on a resume without an explanation: a career change, a gap, a move to another city, a return to work after caring for someone, a referral from someone on the team. The UK’s National Careers Service notes you can use the letter to describe the skills you gained during a gap in employment (National Careers Service).

What the letter is not: a second copy of your resume in sentences. If a paragraph only repeats your job titles, cut it.

When you need one, and when you can skip it

Not every application has room for a letter, and not every letter adds something. A quick guide:

Advice on optional letters varies. Some career services take the strict line: Berkeley’s advises including a cover letter with every application (Berkeley Career Engagement). A sensible middle ground: when the field is optional, send a letter if you can make it specific to this job in a few short paragraphs. If all you can write is a template, the time is better spent on your resume.

US and UK: same letter, different habits

The idea is the same on both sides of the Atlantic, but the names and a few conventions differ.

• Names. In the US it’s a cover letter that goes with a resume. In the UK you’ll hear both “cover letter” and “covering letter”, and the document it goes with is a CV.
• Length. One page is the norm in both. The National Careers Service describes it as a short letter, usually 3 to 5 paragraphs long, that should go with a CV whenever you apply with one (National Careers Service).
• Greeting. Try to find a name. If you can’t, Berkeley suggests “Dear Hiring Manager” (Berkeley Career Engagement); the National Careers Service suggests checking the company website for a head of department or a recruitment manager first, and “Dear Sir or Madam” as the last resort.
• Sign-off. In the US, “Sincerely,” or “Best regards,” are standard. In the UK the traditional rule pairs the greeting and the closing: “Yours sincerely” when you named the person, “Yours faithfully” after “Dear Sir or Madam” (National Careers Service). We cover closings in detail in how to end a cover letter.
• Spelling. Write in the employer’s English: “organize” for a US company, “organise” for a UK one.

What recruiters look for

You can’t know how long any one reader will spend on your letter, so write for someone in a hurry. What makes a letter worth reading is consistent across career guides:

• Specifics about them. A sentence that could only be written about this company and this role. The National Careers Service suggests showing what you’ve learned about the employer and mentioning the job title and any reference number.
• Proof, not adjectives. “I cut onboarding time from three weeks to one” beats “I am a results-driven professional.” The same guide suggests backing up claims with facts, using the STAR method (Situation, Task, Action, Result).
• The employer’s words. Use the keywords from the posting where they are true of you. It helps the human reader see the match, and it keeps the letter consistent with an ATS-friendly resume.
• Clean writing. No spelling or grammar errors, the right company name, the same font as your resume. A letter addressed to the wrong company is the one mistake people remember.
• Brevity. If you can say it in three paragraphs, don’t use five.

The structure, in short

Most good letters follow the same simple shape:

1. Greeting. A name if you can find one.
2. Opening. The role you’re applying for and one sentence on why this employer. Skip “I am writing to express my interest”: the reader already knows.
3. Middle, one or two paragraphs. Two or three requirements from the posting, each with a piece of evidence from your experience. If there is context to explain (a gap, a move, a change of field), say it here, briefly and without apologizing.
4. Closing. Restate the fit in one line, say you’d welcome a conversation, mention availability if it matters, and thank them.
5. Sign-off and name.

How AI can help without making you sound generic

AI tools are good at a first draft and at tightening sentences. They are bad at knowing what makes you different, and a letter built only from the posting reads like every other letter built from the same posting. Some employers now say how they want candidates to use AI. Anthropic, for example, asks applicants: “Please create your first draft yourself, then use Claude to refine it.” (Anthropic). If an employer publishes a rule like this, follow it.

Whatever tool you use:

• Feed it real material. The posting plus your actual resume, and a few notes on why you want this job.
• Add what only you know. A project, a number, a reason for the move. That’s what makes the letter yours.
• Cut the stock phrases. “Passionate”, “dynamic team”, “I believe I would be a great fit”: delete them and say the specific thing instead.
• Check every fact. A model can attribute skills or results to you that you don’t have. Anything in the letter can come up in the interview.
• Read it aloud. If it doesn’t sound like something you’d say, rewrite it.

How Jobra writes a cover letter for each job

Jobra is an AI job search agent: it finds jobs that fit you, writes a resume and a cover letter for each one, and applies for you. The letter is written for that posting, from your profile and your resume, so each application gets its own.

When Jobra applies by email, the letter is the body of the email, sent in your name as “Your Name via Jobra”, with your CV attached as a PDF. Where it can, it uses the company’s own application form instead. If a site needs an account or a captcha, the job becomes an “Apply yourself” card with the letter ready to paste. Before anything leaves, Jobra checks that the letter is finished, with no placeholder left in it. If you’d rather read every letter first, the “You approve what goes” mode sends nothing without your swipe. Plans and limits are on the pricing page.

Frequently asked questions