What should a marketing executive's cover letter actually do?

Why this letter gets read more carefully than in most jobs

In most fields, a covering letter is a formality attached to a CV. In marketing, it's closer to a work sample. You're applying to write copy, subject lines, ad text or campaign messaging for a living, and the letter is the one piece of unsolicited writing the hiring manager gets to judge before they've offered you anything. A marketing manager or CMO reading it isn't just checking your history against the job spec — they're reading your sentence construction, your ability to be concise, and whether you can write about yourself without falling into the same clichés you'd be paid to avoid in a brand's tone of voice. A letter full of "passionate about driving results" and "synergy" undermines the application in a way it wouldn't for, say, a data analyst or a quantity surveyor, because it's evidence of the actual skill being hired for.

That said, don't overcorrect into thinking the letter is the main event. It isn't. The CV — and increasingly the portfolio or a link to campaign work — carries more weight, because it shows what you actually did: click-through rates you moved, budgets you managed, channels you owned, tools you used (HubSpot, Salesforce Marketing Cloud, Google Analytics 4, Meta Ads Manager, Mailchimp, a CMS like WordPress or Contentful). The letter's job is narrower: to prove you can write, and to answer the two questions below. It is not the place to repeat your CV in paragraph form.

Where it's actually read, and where it's skipped

At small and mid-sized in-house marketing teams — the kind that hire one marketing executive at a time, often reporting to a marketing manager or head of marketing — someone usually does read the letter, because they're hiring for a team of three or four people and every hire matters to the tone of the department. If the job was posted by the hiring manager directly, or the company is small enough that there's no dedicated recruiter screening first, assume the letter gets a genuine look.

At agencies and larger consumer brands, applications more often go through a recruiter or an internal talent team first, and marketing executive roles at this level attract high volumes of applicants, particularly from graduates and career-changers drawn to marketing as a visible, "creative" field. Where volume is high, the first pass is frequently a scan of the CV against the job spec, sometimes through an applicant tracking system that a recruiter set up to flag keywords — sector experience, specific platforms, years in a similar title. A letter can sit unopened at this stage, or get thirty seconds. If the advert asks for a covering letter and you don't send one, that can be an automatic filter regardless of how good your CV is — some recruiters use it as a basic instruction-following check before anything else is read.

There's no reliable way to know, from the outside, which of these situations you're in for a given application. The honest position is: write a letter good enough to survive being read closely, keep it short enough to survive being skimmed, and don't spend three hours on it when the advert gives no covering letter instruction and the company is a large consumer brand running a graduate-style volume process. Spend the time instead on tailoring the CV to the specific channels and tools the advert names.

The two questions the letter has to answer

Strip away the padding and a marketing hiring manager is looking for answers to two things.

What have you actually made or run, and what happened? Not "I have experience in social media marketing" — which channel, which platform, for what kind of business, and what changed as a result. "Ran the Instagram and TikTok accounts for a DTC skincare brand, grew organic engagement over six months, and built the content calendar the team still uses" tells a hiring manager something. "Managed social media channels to increase brand awareness" tells them nothing they couldn't write themselves about any candidate. If you have numbers you can stand behind — an open rate, a cost-per-acquisition figure, a percentage increase in qualified leads — use them. If you don't have exact figures because you weren't the one measuring them, say what you did in specific, checkable terms instead of inventing a number to fill the gap. A hiring manager who's run campaigns themselves will recognise a made-up stat, and it costs you more than a vague sentence would have.

Why this brand, this sector, this team, specifically? Marketing executive roles vary enormously by sector — B2B SaaS demand generation is a different job from FMCG brand marketing, which is different again from a charity's supporter engagement role or an agency account handler's client-facing marketing work. A generic letter that could be sent to any of these reads as generic, and in a field that's partly about audience understanding, that's a worse signal than it would be elsewhere. One or two sentences on why this company's positioning, product, or audience interests you — grounded in something you can point to, not "I've always been passionate about your brand" — does more work than a full paragraph of enthusiasm.

Everything else — your software list, your degree, your years of experience — belongs on the CV. The letter exists to answer these two questions and demonstrate, by the way it's written, that you can write.

What to put in the first third, and what to leave out

Open with the role and one concrete reason you fit it — ideally the thing the advert asked for most specifically. If the advert says "experience with email marketing automation and segmentation," your first two sentences should contain the platform you used and what segmentation approach you ran, not a line about your career journey. Hiring managers reading dozens of these letters are looking for the match early; don't make them hunt for it in paragraph three.

Leave out: your personality traits as adjectives ("creative," "driven," "a natural communicator") without evidence attached. Leave out a summary of your degree unless it's directly relevant — a marketing or business degree is common enough in this field that naming it adds little, whereas a specific module, dissertation topic, or placement that connected to marketing practice is worth a line. Leave out generic claims about "keeping up with the latest trends," which every applicant in this field writes and which no hiring manager finds informative, since it names no trend and no action.

One format point specific to this occupation: keep it to one side of A4 or the digital equivalent, ideally under 300 words. A marketing executive who can't edit their own application down is a candidate a hiring manager will reasonably worry can't edit copy either.

Where the letter genuinely doesn't matter

Be honest with yourself about volume applications to large consumer brands, retail graduate schemes, and agency roles advertised on LinkedIn with hundreds of applicants within days. In these situations the letter is unlikely to be the deciding factor either way — a strong one won't rescue a CV that doesn't show relevant channel or sector experience, and a weak one is unlikely to sink an application with a genuinely strong portfolio and CV, if a person ever reaches it. Where advice online tells you a covering letter can single-handedly overcome a mismatched CV, that's not something anyone measures reliably, and it's worth treating with scepticism. Put your effort where the advert gives you a specific instruction to follow, and where the company is small enough that a person is likely reading every word.

What to do next

Pull up the specific advert and highlight the two or three requirements it repeats or lists first — usually the channels, tools, or sector experience that matter most to this role. Write your opening two sentences to answer those directly, with one concrete result attached if you have one. Cut anything that would read the same if you swapped in a different company's name. Read it aloud once — if a sentence sounds like something you'd cut from a client's ad copy for being vague, cut it from your own letter too.

If you're sending out a high volume of applications and each one needs this kind of tailoring to a different advert, jobmarket.pro reads each job advert in full and prepares an application from your own work history without inventing experience you don't have.