GUUL
Marketing and communications

Copywriter Cover Letter Example

A complete copywriter cover letter built on a landing-page rewrite that lifted trial conversion from 3.9% to 11.2%.

Looking for a resume? See the Copywriter resume example

DesignModern

3 blanks to fill

The copywriter cover letter, editable

Leon Kim
Copywriter
Austin, TXleon.kim@example.com(512) 555-0109

October 17, 2026

Creative Director
[Company name]
[City, State]

Dear [Hiring manager's name],

I write and test landing page copy for a self-serve analytics platform at Lumen Metrics, and this year lifted visitor-to-trial conversion from 3.9% to 11.2% across our top five acquisition pages without a redesign. I'm applying for the Copywriter role because I want that same direct line between a sentence I write and a number that moves.

I run 60-plus A/B copy experiments a year on headlines, calls to action and pricing-page framing, and winning variants have added an estimated $1.8 million in annual pipeline. I also rebuilt the onboarding email sequence for a 140,000-subscriber list, raising open rates from 22% to 34% and trial-to-paid conversion 19%.

I created the brand voice guide now used to train 11 writers and marketers, cutting copy revision cycles from four rounds to two, and I partner with product and design on UX copy that cut activation-flow abandonment 27% within a single redesign cycle. I write fast, but I test everything before I let myself trust a single line of it.

I'd welcome the chance to write a few test headlines for [Company name]'s highest-traffic page before we even talk formally, if that would help. I'm glad to bring my full testing history to an interview.

Warm regards,

Leon Kim

Fictional example. Swap in your own names, numbers and employers. Your edits are saved in this browser.

Personalize with AI

At least 20 characters0 / 2,500

Why this letter works

  1. Paragraph 1

    Leads with a conversion lift, not a portfolio tease

    A jump from 3.9% to 11.2% conversion is a number a creative director can immediately judge, which does more work in the first two sentences than any description of writing style.

  2. Paragraph 2

    Testing volume plus a dollar estimate

    Sixty-plus experiments a year, tied to an estimated pipeline figure, shows this isn't one lucky headline but a repeatable testing practice with real commercial weight behind it.

  3. Paragraph 3

    Built the system others now use

    Creating a brand voice guide that other writers use, and cutting revision rounds in half, shows leverage beyond personal output, which matters for a copywriter being considered for more senior work.

3 blanks left

Editing and AI tries are free. Download from $4.99 with a Guul plan.

Pair it with a resume

Leon Kim’s copywriter resume

The same fictional career, written as a one-page resume. Read them together to see what the letter adds.

See the resume example

Questions about copywriter cover letters

How important is the cover letter for a copywriting job?

Extremely important. It's your first writing sample and hiring managers will evaluate it as such. A generic, template-driven cover letter will disqualify you immediately. Your cover letter should demonstrate voice control, persuasion, structure, and brevity — the exact skills they're hiring for.

Should I match the company's brand voice in my cover letter?

Yes, if you can do it authentically. Mirroring their tone shows you've done your research and can adapt your writing style. If their brand is playful, write with energy. If they're formal and authoritative, match that register. Just don't force it — an awkward imitation is worse than your natural professional voice.

What metrics should a copywriter include in a cover letter?

Focus on conversion rates, engagement metrics, and revenue impact. Examples: 'Email sequence with 28% open rate,' 'Landing page copy that lifted conversions by 47%,' or 'Ad copy that reduced CPA by 30%.' If you don't have hard numbers, reference qualitative outcomes like brand consistency improvements or reduced revision cycles.

Marketing and communications

Browse every cover letter example