A free copywriter cover letter selected by a machine that cannot judge prose
One senior copywriter cover letter, printed exactly as the builder wrote it: sender block, date, recipient, subject, four paragraphs and a sign-off. The copywriter and the studio are invented. The letter, the tracing and the two gaps came out of the product.
— a machine cannot read your prose. give it a number instead.

A copywriter applying to a studio faces one unusual problem: the letter is both the application and the sample.
Delia Ottersmark and Fernlowe Studio are invented, and so are the employers in the evidence; the letter below is the builder's own output from that evidence, unchanged.
The brief, and the evidence the letter may use
An invented person. Not a real document, and not yours.
The role
Senior Copywriter · Fernlowe Studio
The posting
Fernlowe Studio is hiring a senior copywriter for its retained clients. The role covers brand voice, landing pages, email marketing and content marketing, working to SEO briefs and running A/B testing with the growth team. Conversion rate optimisation experience is welcome.
What the letter may claim
- Wrote 140 landing pages and lifted conversion on 31 of them by 12% or more.
- Ran A/B testing on 48 email marketing subject lines across two years.
- Built the brand voice guide that 3 client teams now write to without the agency.
- Led content marketing for a retained client from 4 to 26 articles a quarter.
- Reduced legal review rounds on regulated copy from 3 to 1 by rewriting the brief template.
Where it happened
- Senior Copywriter · Harkaway & Vole · 2021 — present
- Copywriter · Thrushmoor Digital · 2017 — 2021
Skills it may name
- copywriting
- content marketing
- email marketing
- A/B testing
- brand voice
- landing pages
- editing
The letter the builder wrote, in full
232 words in the direct voice. 8 of its 13 sentences quote a numbered line of Delia's evidence; the rest are the builder's own connecting sentences.
Delia Ottersmark
Senior Copywriter
[email protected]
Manchester, United Kingdom
26 September 2026
Hiring Team
Fernlowe Studio
Manchester
Re: Senior Copywriter
Dear Fernlowe Studio Hiring Team,
I'm applying for the Senior Copywriter role at Fernlowe Studio. Copywriter with seven years in agencies and in house, working on the sentence that has to do a job rather than win an award. You ask for A/B Testing, and that is work I have already done: Ran A/B testing on 48 email marketing subject lines across two years.
I have worked as Senior Copywriter at Harkaway & Vole, 2021 — present. I have also worked as Copywriter at Thrushmoor Digital, 2017 — 2021. I wrote 140 landing pages and lifted conversion on 31 of them by 12% or more. I also led content marketing for a retained client from 4 to 26 articles a quarter.
I built the brand voice guide that 3 client teams now write to without the agency. I also reduced legal review rounds on regulated copy from 3 to 1 by rewriting the brief template. The posting asks for A/B Testing, Email Marketing, Landing Page Optimisation and Content Marketing — all of which I've worked with directly. The posting also asks for SEO and Conversion Rate Optimization, which I have not used in these roles.
I would welcome the opportunity to discuss the role. Thank you for considering my application.
Sincerely,
Delia Ottersmark
How every letter on these pages is built from its evidence is set out in how our examples are made.
Opening lines for a copywriter cover letter
Three ways to start it:
“I'm applying for the Senior Copywriter role at Fernlowe Studio; my last landing page rewrite lifted sign-ups by a quarter.”
“Your studio's tone of voice work is what I have led for two retail brands.”
“I write, test and edit, and I would bring all three to your team.”
Set these beside the opening the free letter builder writes from what you give it.
Mistakes that sink a copywriter cover letter
The first is a clever opening with no result behind it. The second is a letter that is not proofread, which is fatal for a writer. The third is no portfolio link.
Let the letter show your writing, and link three pieces. The opening lines guide has more starts.
What it refused to claim
Two gaps came back with this letter: SEO and Conversion Rate Optimization. Both are named in the posting and neither phrase appears in Delia's lines, even though the landing page work is plainly about conversion and the content programme is plainly search-led. The engine reads what is written. Reading your own gaps list turns both of these into sentences she should have written.
What a copywriter's letter has to prove
That the writing did something. A creative director gives an application four seconds, and a figure survives those four seconds where an adjective does not: conversion lifted on thirty-one pages, forty-eight subject lines tested, legal review rounds down from three to one.
The brand voice line is the one that closes a senior job. A guide three client teams now write to without the agency is a writer whose thinking outlives their contract. Writing the line you are avoiding covers the rest of it.
Open it on Details & drafting
Loads Delia's role, studio, posting and evidence into the cover letter builder in the Modern design. Nothing is written until you press Create new draft. Free, no account.
Use this exampleSee the letter designsQuestions
- Is Delia Ottersmark a real person
- No. She is invented for this page, and so are Fernlowe Studio, Harkaway & Vole and Thrushmoor Digital. No real client is described and no hire is claimed.
- Did the product really write this letter
- Yes. The evidence list on this page was loaded through this page's own door, the company city was typed into the field Details & drafting asks for, and Write the letter was pressed. The reply is printed above unchanged, blocks and all. The engine reports its own provenance: six requirements read in the posting, seventeen evidence lines offered, eight sentences traced to a numbered line of them, ten written from named connective patterns, two gaps, no model.
- This page used to say the landing page line was missing. Why
- It is in the letter. In the draft printed above it is the fourth sentence of the evidence paragraph, traced to line 12 of her evidence list. The sentence that said otherwise described a much shorter draft the engine printed before 14 September, and it has been corrected against the letter the product writes today.
- Why is SEO a gap when the work is obviously search-led
- The posting names SEO and none of the seventeen evidence lines uses the term. Conversion Rate Optimization came back as the second gap on the same reading, and for the same reason. Content marketing and landing pages are adjacent work and the engine will not promote adjacent work into a claim. One true line about writing to search briefs closes it.
- What does “Use this example” do
- It opens the cover letter builder in Details & drafting with the role, the studio, the posting and the four evidence groups already loaded. It leaves the contact name, their title and the company city empty for you. No letter and no application record exists until you press Create new draft.
- Which design is this example in
- Modern, a quiet asymmetric grid. These pages pair each of the eight ATS-family résumé layouts with a letter design of the same manner, and Nexus is paired with Modern. The pairing is authored here and is not yet a feature: any of the 12 designs carries the same words.
Conxfolio is a free set of four career tools: a résumé builder with 37 rendered layouts, an ATS résumé checker that prints its own arithmetic, a cover letter builder that traces every proof paragraph back to the line it came from, and a portfolio builder with 22 authored designs. There is no account to create, nothing is held back for a paid plan, and no language model is used anywhere in the product, so the readers, the score and the letter are deterministic code you can check.