Should a digital marketing cover letter include campaign links?

Offer them rather than attaching them, or link one public example. Founders prefer a short letter and a conversation over a folder of screenshots.

What if I cannot share client results?

Use relative numbers, such as a percentage lift or ROAS change, and describe the industry without naming the client. That respects confidentiality and still proves impact.

How do I move from agency to in-house in the letter?

Show depth on one account: a result you owned over months, not just campaigns you launched. In-house teams want long-term ownership.

Digital Marketing Specialist cover letter example

Digital Marketing Specialist cover letter example: opening on the brand's ad costs and email, proof from ROAS and flows, and campaign examples to close.

Resume for this role

Sofia Hernandez

Digital Marketing Specialist | Paid Social, Google Ads and Lifecycle Email | DTC

Austin, TX

October 30, 2026

Diego CastilloFounder and CEOHill Country Coffee Co.Austin, TX

Re: Digital Marketing Specialist

Dear Mr. Castillo,

Your Digital Marketing Specialist posting at Hill Country Coffee Co. mentions rising ad costs and an email list that is not pulling its weight. I have spent the past two years solving both problems at Caliche Outdoor Co., another Austin brand that sells mostly online.

When I joined, we relied almost entirely on paid social, and email brought in 16% of online revenue. I rebuilt our Klaviyo welcome and abandoned-cart flows, segmented the list by purchase history and added SMS for our best customers. Email now drives 27% of revenue. On the paid side I manage $100,000 a month across Meta, Google Shopping and TikTok, and blended ROAS has risen from 3.2x to 4.1x.

Most of that came from creative testing rather than budget. I run 8 to 10 tests a month with our designer, and user-generated video now wins about 60% of them. Restructuring our prospecting audiences around broad targeting and stronger creative cut cost per acquisition by 22%, which is the lever I would look at first for a coffee subscription.

Before that I spent almost two years at Pecan Street Media supporting 11 clients with $250,000 in combined monthly spend. It taught me to set up clean reporting fast and to explain results to owners who are not marketers, and one local campaign I launched lifted a dental group's booked appointments by 35% in a quarter.

I bring 4 years of hands-on digital marketing for DTC brands and I enjoy working with a founder-led team. I would be glad to share a few campaign examples when we talk.

Best regards,

Sofia Hernandez

Fictional candidates and employers. Any resemblance to a real person or company is coincidental.

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How this letter works

What each part of the letter above does, and how to do the same in yours.

The opening

It names two problems from the posting, rising ad costs and a weak email list, and claims experience solving both at a similar local brand. Founders hiring their first marketer want proof you have done it at their size.

Whom to address

At a founder-led brand, write to the founder or head of growth, whose name is on the About page. In bigger companies, address the marketing manager who owns the role.

Requirements matched to proof

The posting asks forGrow revenue from email: The letter showsRebuilt Klaviyo flows; email from 16% to 27% of online revenue.
The posting asks forManage paid media efficiently: The letter shows$100,000 a month across three platforms; ROAS from 3.2x to 4.1x.
The posting asks forTest and improve creative: The letter shows8 to 10 tests a month; acquisition cost down 22%.

Length

Five paragraphs in the usual 250 to 400 words. Marketing letters can drown in metrics; this one uses one or two per paragraph and says what caused each.

This letter: 261 words.

The closing

Offering to share campaign examples invites the founder to the part of the interview that sells you best: real ads, real results.

Mistakes to avoid in this letter

Vanity metrics
Impressions and followers rarely impress a founder. Revenue, ROAS, acquisition cost and email share of revenue do.
Taking credit for budget, not skill
Spending more is not an achievement. Say what you changed, creative, audiences, flows, and what it did.
No sense of the brand
A line showing you know their product and customers proves you are not sending the same letter to every brand.

Questions about this cover letter

Should a digital marketing cover letter include campaign links?: Offer them rather than attaching them, or link one public example. Founders prefer a short letter and a conversation over a folder of screenshots.
What if I cannot share client results?: Use relative numbers, such as a percentage lift or ROAS change, and describe the industry without naming the client. That respects confidentiality and still proves impact.
How do I move from agency to in-house in the letter?: Show depth on one account: a result you owned over months, not just campaigns you launched. In-house teams want long-term ownership.

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