AI Cover Letter Generator

The cover letter that gets you to the interview

Recruiters and hiring managers spend an average of seven seconds on each application before deciding to read more or move on. A generic cover letter that opens with "I am writing to apply for the position of..." dies in those seven seconds. A tailored letter — one that signals you actually understand the company, the role, and what you would bring on day one — survives the cut. Your CV is the proof; the cover letter is the argument.

Hiring data from the US Bureau of Labor Statistics and from UK recruiters consistently show that tailored applications outperform mass applications by an order of magnitude on response rate. Sending 100 generic applications often produces fewer interviews than sending 10 tailored ones — and takes the same amount of total time.

Why it still matters in 2026

Even with applicant tracking systems (ATS) and AI screeners, almost every senior or mid-level posting still asks for a cover letter, and many ATS workflows route the document straight to the hiring manager once the ATS has matched the CV against the job description. Skipping it signals you do not really want this specific role.

The structure that consistently outperforms

1. Hook (2–3 lines): open with something specific to the company — a recent product launch, a strategic move, a metric they have publicly reported. Or lead with your single biggest, most relevant achievement
2. Value paragraph: two or three concrete, quantified results that map directly onto the job description. Use the same nouns and verbs the job ad uses — both human readers and ATS pick up on them
3. Motivation paragraph: why this company specifically. Not "I want to grow my career" — that goes to a thousand companies. "Your move into the European mid-market with the launch of [X] aligns with the work I did at [Y]"
4. Call to action: a confident closing line. "I would welcome the chance to discuss how I can contribute" beats "I look forward to hearing from you"

The hard rules

• One page only. Anything more is read as inability to prioritise
• Match the job ad's keywords — ATS systems weight keyword overlap heavily
• Quantify everything. "Reduced churn" is empty; "Reduced monthly churn from 6.4% to 4.9% over two quarters" is a credential
• No CV repetition. The cover letter is the narrative; the CV is the evidence
• Address the actual hiring manager if you can find them — LinkedIn, the company's leadership page, a quick email to the recruiter
• Save and send as PDF — Word documents reformat unpredictably

UK vs US conventions

Both markets value brevity, specificity, and quantified outcomes. Some style differences:

• UK: "Yours sincerely" if you named the recipient, "Yours faithfully" if you used "Dear Sir or Madam". British spelling. Date in DD Month YYYY.
• US: "Sincerely" or "Best regards". American spelling. Date in Month DD, YYYY. Add your phone and email under your name in the header. Some industries (finance, law) still expect a formal block layout
• Photo / date of birth / marital status: never include these in the US (discrimination law concerns) and almost never in the UK
• Salary expectations: US openings sometimes ask explicitly; quote a range or "open to discussion". UK roles rarely ask in the cover letter

The opening lines that kill an application

• "To Whom It May Concern" when the hiring manager is named on LinkedIn
• "I am a passionate self-starter with strong communication skills"
• "I am writing to apply for the position of..." — verb-tense fluff
• "Please find attached my CV/resume" — the recruiter can see the attachment
• Generic praise: "Your company is a leader in its field"

What to do when you have no direct experience

Lead with the transferable skill and prove it with a story. Career changers, returners, and graduates win cover letters by being specific about what they have done elsewhere that maps onto this role: a side project, a volunteer engagement, a quantified result from a different industry. Hiring managers respect candor and curiosity; they punish vagueness.

Final checklist before sending

• Hiring manager's name spelled correctly
• Company's legal name spelled correctly (check Companies House or the state registry)
• The job title in the subject line matches the posting exactly
• No leftover placeholder text from a template
• One page, PDF, sensible filename: "Surname_FirstName_CoverLetter_RoleTitle.pdf"
• Read aloud once — anything that sounds clunky out loud reads worse on the page

Beating the applicant tracking system (ATS)

An estimated 75% of large US employers and a growing share of UK employers route applications through an ATS such as Workday, Greenhouse, Lever or Taleo. The ATS scores documents on keyword overlap with the job description before a human ever sees them. Three rules for cover-letter ATS optimisation:

• Use the exact job-title nouns and skill keywords from the posting, ideally in the first paragraph
• Avoid headers, footers, tables and text boxes — they confuse some parsers
• Save as PDF unless the posting explicitly asks for .docx; modern ATS read PDF cleanly

What Lettrio generates for you in 30 seconds

Our AI writes a tailored, one-page cover letter that weaves your experience and skills into the language of the job description, opens with a specific hook about the company, quantifies your achievements, and closes with a confident call to action. Adapted to UK or US conventions automatically. PDF ready to attach. First letter free, no account required.