Comarketing: How to Pick the Right Partner and Make It Pay

Comarketing is a growth strategy where two brands collaborate on a shared campaign, product, or piece of content to reach each other’s audiences. Done well, it expands your reach without proportionally expanding your budget, and it borrows credibility from a brand your target audience already trusts.

Done badly, it’s a distraction that burns time, dilutes your message, and produces a piece of content nobody wanted. The difference between the two usually comes down to one thing: whether the partnership was built around a genuine audience overlap or just around two marketing teams who liked each other.

Why Comarketing Is Having a Moment Right Now

Paid media costs have been climbing for years. Organic reach on most platforms has compressed. Building an audience from scratch is slower and more expensive than it was five years ago. In that environment, accessing someone else’s established audience starts to look very attractive.

That’s the commercial logic behind the renewed interest in comarketing. It’s not a new idea. Co-branded campaigns have existed for decades. But the mechanics have changed. Today’s comarketing often means a joint webinar, a co-authored report, a shared email to both lists, or a product integration with a partner’s platform. The formats are different. The underlying logic is the same: two brands, one shared audience moment.

There’s a broader point here about where growth actually comes from. I spent a long stretch earlier in my career focused almost entirely on lower-funnel performance, optimising for the intent that was already in the market. It took me longer than I’d like to admit to fully appreciate that most of that performance was capturing demand that would have converted anyway. Real growth, the kind that moves the revenue line over time, comes from reaching people who don’t yet know they need you. Comarketing, when it’s structured properly, is one of the better tools for doing that. It puts you in front of audiences who are already warm to a brand they trust, but who haven’t encountered yours yet. That’s a genuinely valuable position to be in.

If you’re thinking about comarketing as part of a broader go-to-market approach, it’s worth reading through the Go-To-Market and Growth Strategy hub for context on how partnership plays fit within a wider growth architecture.

What Makes a Comarketing Partnership Actually Work

The first question to answer is not “what should we create together?” It’s “do our audiences genuinely overlap, and is that overlap valuable to both of us?”

Audience overlap sounds obvious, but it’s frequently misunderstood. Two brands can sell to the same industry vertical without their audiences overlapping in any meaningful way. A CFO-focused fintech and a CMO-focused martech platform might both target enterprise SaaS companies, but their audiences are different people with different priorities and different buying journeys. A comarketing campaign that tries to serve both simultaneously usually ends up serving neither well.

What you’re looking for is a partner whose audience is the same person you’re trying to reach, at a similar stage of their professional life, with a complementary but non-competing need. The classic example is a project management tool partnering with a time-tracking tool. Same user, same workflow, no competition. The partnership makes sense because both brands benefit from the same audience trusting both products.

The second question is about commercial alignment. What does each side actually want from this? If one brand wants top-of-funnel awareness and the other wants bottom-of-funnel leads, you have a structural mismatch that no amount of good creative will fix. The partner who wants leads will push for gated content and hard calls to action. The partner who wants awareness will push for distribution and reach. You’ll end up with a compromise that does neither job properly.

I’ve seen this play out more than once. Early in my agency years, I watched a comarketing arrangement between two clients fall apart mid-execution because one side had briefed their team on lead generation targets and the other had briefed theirs on brand reach metrics. Nobody had had the commercial conversation at the start. By the time the misalignment surfaced, both teams had invested significant time and the relationship was strained. The campaign launched, performed modestly, and was quietly never repeated.

The Formats That Tend to Deliver

Not all comarketing formats are equal. Some are better suited to awareness, some to engagement, some to list-building. Picking the right format for your objective is as important as picking the right partner.

Co-authored content (reports, guides, research papers) works well for B2B brands targeting decision-makers. The combined credibility of two recognised brands on a single piece of content tends to lift perceived authority. Distribution is the challenge. Both brands need to commit to genuine promotion, not just a token mention in their newsletter.

Joint webinars and events are probably the most common comarketing format in B2B right now, and for good reason. They’re relatively low-cost to produce, they give both brands a shared stage, and they generate a list of registrants that both sides can follow up with. The risk is that they become too product-focused too quickly. The best joint webinars are built around a topic the shared audience genuinely cares about, with the product angle kept light.

Email list sharing is high-value and underused. If your partner has a genuinely engaged list and you have something worth saying to that list, a co-branded email or a dedicated send to their subscribers can drive real results. The key word is “engaged.” A large but disengaged list is worth very little. Before agreeing to this format, ask your partner for their average open and click rates. If they’re reluctant to share, that tells you something.

Product integrations and bundles sit at the deeper end of the comarketing spectrum. These require more investment and more trust, but they also create more durable value. When two products work together natively, the comarketing becomes embedded in the product experience rather than being a one-time campaign. That’s a fundamentally different and more powerful position.

Social and content amplification is the lightest-touch version. One brand shares the other’s content, tags them in posts, or contributes a guest perspective. It’s low-effort and low-risk, but also low-impact on its own. It works best as a warm-up to a deeper collaboration, not as a standalone strategy.

How to Structure the Conversation With a Potential Partner

The first conversation with a potential comarketing partner should not be a pitch. It should be a discovery conversation. You want to understand their audience, their current marketing priorities, their capacity, and their appetite for collaboration before you propose anything specific.

Ask about their audience. Not just the demographic profile, but the behavioural profile. What content do their subscribers engage with most? What topics drive the most response? What are their customers trying to solve right now? This tells you whether your audiences are genuinely aligned and what kind of content would resonate with both groups.

Ask about their team capacity. Comarketing requires coordination. If your potential partner is a two-person marketing team running at full capacity, a joint research report is probably not realistic, regardless of how well your audiences align. Match the ambition of the partnership to the realistic capacity on both sides.

Ask about their goals for the next quarter. This is where you surface the commercial alignment question early. If their priority is pipeline generation and yours is brand awareness, you need to design the partnership so both objectives are genuinely served, or acknowledge that the timing isn’t right.

One thing I always pushed when running agency partnerships: get the commercial conversation out of the way in the first meeting. Not in an adversarial way, but in a “let’s make sure this is worth both our time” way. The partnerships that worked were always the ones where both sides were honest about what they needed from the arrangement. The ones that drifted were the ones where everyone was too polite to have that conversation early.

Measuring Comarketing Without Kidding Yourself

Attribution in comarketing is genuinely hard, and anyone who tells you otherwise is either measuring the wrong things or not being honest about the limitations of their data.

The standard metrics (registrations, downloads, new contacts, email subscribers) are useful but incomplete. They tell you what happened at the moment of conversion. They don’t tell you whether those contacts would have found you anyway through a different channel, whether the partnership accelerated a buying decision that was already in motion, or whether the audience quality justifies the investment of time and resource.

A more honest approach is to agree on a small set of leading indicators before the campaign launches, and then track them consistently. For a joint webinar, that might be: registrations from your partner’s list (net new to you), attendance rate, post-event email engagement, and pipeline generated from attendees over the following 90 days. None of these metrics is perfect. Together, they give you a reasonable picture of whether the collaboration moved the needle.

There’s a useful parallel here with how go-to-market motions have become harder to measure as buyer journeys have fragmented. Comarketing sits in the same messy middle. You’re influencing a decision that may close weeks or months later, through a channel that doesn’t have clean last-click attribution. That doesn’t mean you can’t measure it. It means you have to measure it honestly, with appropriate humility about what the numbers actually tell you.

One metric worth tracking that most teams ignore: the quality of the contacts generated, not just the quantity. A comarketing campaign that delivers 50 highly qualified contacts who match your ICP is more valuable than one that delivers 500 contacts who were mildly curious about a free piece of content. Build that quality filter into your measurement framework from the start.

The Mistakes That Kill Comarketing Campaigns

Picking a partner based on brand name rather than audience fit is the most common mistake. A partnership with a well-known brand looks impressive in a marketing report. It may generate very little actual value if your audiences don’t overlap. I’ve judged enough Effie submissions to know that the campaigns that win aren’t always the ones with the most impressive brand logos in the deck. They’re the ones that demonstrate a genuine connection between the strategy and the outcome.

Treating comarketing as a one-off campaign rather than a relationship is another. The best comarketing arrangements compound over time. The first collaboration builds trust and establishes a working rhythm. The second is easier to execute and tends to perform better. By the third, both teams know how to work together efficiently and the shared audience has seen both brands in the same context enough times to associate them positively. Stopping after one campaign because the first results were modest is a common mistake.

Underinvesting in promotion is perhaps the most avoidable mistake. Both parties produce the asset, both parties do a light social share, and then both parties wonder why the results were underwhelming. Comarketing requires genuine distribution commitment from both sides. That means dedicated emails to both lists, social posts across multiple platforms, paid amplification if the budget allows, and integration into both brands’ content calendars. If either side isn’t prepared to promote the collaboration properly, the campaign is unlikely to justify the production effort.

There’s also the question of brand fit. Two brands can have perfectly overlapping audiences and still produce a collaboration that feels off. This is harder to define but easy to recognise. If your brand is known for being direct and data-driven, and your partner’s brand is warm and community-focused, the joint content will feel inconsistent regardless of how technically well it’s produced. Audience overlap is necessary but not sufficient. Brand tone compatibility matters too.

Comarketing at Scale: When It Becomes a Programme

For most teams, comarketing starts as an ad hoc activity: a one-off webinar with a partner, a guest post swap, a joint email. That’s fine as a starting point. But if the early experiments show genuine returns, it’s worth thinking about how to build a repeatable programme rather than continuing to treat each collaboration as a standalone project.

A comarketing programme has a defined partner criteria framework, a standard collaboration brief, agreed measurement templates, and a pipeline of potential partners at different stages of the relationship. It moves from reactive (someone suggests a collaboration and you figure it out as you go) to proactive (you have a clear picture of who you want to partner with, why, and what you want to produce together).

When I was growing the team at iProspect from around 20 people to close to 100, one of the things that changed as we scaled was the shift from ad hoc activity to structured programmes. The individual campaigns didn’t necessarily change. What changed was the infrastructure around them: the briefing process, the measurement framework, the review cadence. That same logic applies to comarketing. The activity is the same. The programme makes it repeatable and improvable.

Scaling also raises the question of partner management. Who owns the relationship on your side? Who is the point of contact for each partner? What’s the process for reviewing partnership performance and deciding whether to continue, deepen, or wind down a particular relationship? These questions feel like overhead when you’re running one or two collaborations a year. They become essential when you’re running eight or ten.

For teams thinking about how comarketing fits within a broader growth model, the Forrester intelligent growth model offers a useful framework for thinking about where partnership plays sit relative to other growth levers.

Finding Partners Worth Approaching

The best comarketing partners are often already in your orbit. They’re the tools your customers use alongside yours. They’re the speakers at the same conferences you attend. They’re the brands your best customers mention positively in conversations. Start there before looking further afield.

Customer research is underused as a partner identification tool. If you ask your best customers what other tools, services, or brands they rely on, you’ll quickly build a picture of the ecosystem your audience already inhabits. Those brands are your natural comarketing candidates. The audience overlap is proven before you’ve had a single conversation.

Competitor analysis can also surface partner opportunities. Look at which brands are producing content for the same audience you’re targeting. Look at who is sponsoring the events your buyers attend. Look at which brands are appearing in the same search results as your core topics. These are signals of shared audience interest, even if the products are different.

When you approach a potential partner, lead with the audience insight, not the campaign idea. “We’ve noticed our audiences overlap significantly in [specific segment], and we think there’s an opportunity to create something genuinely useful for that audience together” is a stronger opening than “we’d love to do a joint webinar.” The first frames the conversation around shared value. The second frames it as a tactical request.

Understanding market penetration strategy can help you identify where comarketing fits within your broader growth priorities, particularly when you’re trying to reach audiences in segments where your brand doesn’t yet have strong recognition.

Comarketing is one component of a broader growth strategy, not a standalone solution. If you’re building out your full go-to-market approach, the Go-To-Market and Growth Strategy hub covers the wider picture, from audience strategy to channel selection to measurement frameworks.

About the Author

Keith Lacy is a marketing strategist and former agency CEO with 20+ years of experience across agency leadership, performance marketing, and commercial strategy. He writes The Marketing Juice to cut through the noise and share what works.

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