A polished deck can make almost any marketing agency look institutional for 45 minutes.
But what happens after that? And have they just put all of their effort into marketing themselves, or can they back it up in practice?
For private equity firms, the downside of choosing poorly extends beyond a disappointing campaign. The wrong partner can consume precious months of the hold period, obscure what’s happening in the pipeline, and direct capital towards activity that never reaches revenue.
Here’s how to evaluate marketing partners on the criteria whichreally matters to private equity.
Start With the Value-Creation Plan
A prospective partner should be able to explain how marketing will support the specific value-creation thesis.
That might mean:
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Improving CAC payback
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Increasing penetration within existing accounts
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Entering a new vertical or geography
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Reducing dependence on founder-led sales
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Improving retention and net revenue retention
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Building a more predictable pipeline before exit
Be wary when the proposed strategy looks largely interchangeable between businesses. A portfolio company pursuing an aggressive buy-and-build strategy needs something different from one preparing for exit or professionalising an underdeveloped commercial function.
Ask the agency to connect its first 100 days of work directly to the investment case. The answer should involve commercial priorities, dependencies, and measurable outcomes, not a calendar of planned content.
Secret Source’s RevOps Review assesses how effectively marketing, sales, and CRM support the value-creation plan, and where commercial friction is currently slowing growth. Get your free review here.
Test Whether They Can Follow the Money
Marketing partners are naturally comfortable discussing campaigns. Investors need them to be equally comfortable discussing economics.
They should understand the relationship between:
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Spend, pipeline, and closed revenue
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CAC, LTV, and payback period
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Lead velocity and sales capacity
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Conversion rates and forecast coverage
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Gross margin and customer quality
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Revenue growth, EBITDA, and eventual exit value
That doesn’t mean attributing every pound of revenue to a single touchpoint. It means knowing which indicators are decision-useful, which are directional, and which are simply noise.
Give the agency an imperfect data set and ask what conclusions it would draw. Better still, ask what it wouldn’t conclude. Commercial maturity often reveals itself through restraint.
Look Beyond Marketing
Many apparent marketing problems are revenue-process problems.
More leads won’t solve unclear qualification criteria. A new campaign won’t repair poor sales follow-up. A CRM migration won’t fix inconsistent lifecycle stages. Better creative won’t resolve an offer that the market doesn’t understand.
The strongest partners can identify where marketing ends and the wider revenue engine begins. They should be prepared to inspect:
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CRM architecture and data quality
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Marketing-to-sales handoffs
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Lead qualification and routing
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Pipeline definitions
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Follow-up times
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Forecasting and attribution
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Customer onboarding and retention signals
This is where a RevOps perspective matters. It gives management and investors a shared view of how demand becomes revenue – and where that process is leaking.
Ask Who Will Actually Do the Work
The pitch team and delivery team are not always the same people.
Find out:
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Who owns the commercial strategy?
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Who works directly with portfolio-company leadership?
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Which capabilities are in-house?
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How much senior attention continues after onboarding?
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How quickly can specialist resources be deployed?
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What happens when the original plan isn’t working?
This matters particularly across a portfolio. One company may need positioning and demand generation; another may need CRM remediation, sales enablement, or an interim strategic lead.
A credible partner should be able to assemble the right capability around each company without rebuilding the relationship from scratch every time.
The Final Test: What Will Remain After They Leave?
Campaign outputs disappear quickly, but commercial capability lasts longer.
By the end of the engagement, the portfolio company should have clearer data, stronger processes, better-defined ownership, more useful reporting, and a repeatable route from demand to revenue.
That is the real test of an investment-grade marketing partner.
The deck may still be polished. It just shouldn’t be the most impressive thing they deliver.
Secret Source works with PE-backed businesses to diagnose and improve revenue processes across marketing, sales, and CRM. Book a RevOps Review to establish where the most immediate value-creation opportunities sit within an individual company or across the wider portfolio.
