How to Do Co-Marketing: A Step-by-Step Guide

To do co-marketing, you find a brand that shares your audience but isn’t your competitor, agree on one shared asset or campaign you’ll both create and promote (a co-branded ebook, webinar, bundle, or joint offer), split the work, costs, and leads fairly in writing, then market that thing to both of your audiences at the same time. Learning how to do co-marketing well comes down to picking an aligned partner, designing something genuinely valuable for both audiences, and handling the shared leads and data honestly, so both brands come out ahead and both audiences feel served rather than sold to.

Okay, let’s be honest for a second: co-marketing sounds like one of those corporate buzzwords that means everything and nothing. But strip away the jargon and it’s just this, two brands who like and respect each other pooling their audiences and their effort to make something better than either could make alone. When it works, it’s one of the most efficient growth moves there is, because you’re borrowing trust, not buying attention. When it goes sideways, it’s usually because somebody skipped the honest, unglamorous parts, the agreement, the fairness, the consent. So let me walk you through the whole thing, the way I’d explain it to a friend over coffee, so you can start planning your first co-marketing campaign this week.

What is co-marketing, exactly?

Co-marketing is when two brands jointly create and promote a single shared asset or campaign to both of their audiences. That’s the whole definition, and every word in it matters. Two brands, so it’s a partnership of equals, not a sponsorship. Jointly create, so you build the thing together rather than one brand slapping its logo on the other’s work. A shared asset or campaign, so there’s one concrete thing at the center. And both audiences, so the entire point is that each partner brings their people to the table.

It’s easy to mix this up with a few neighbors, so let me draw the lines gently. Co-marketing is not the same as an affiliate deal (where you just earn a cut for referrals) or a straight sponsorship (where one brand pays another for exposure). It’s a genuine collaboration where both brands invest effort and both brands benefit. It lives under the bigger umbrella of partnership marketing, which covers every way brands team up, and it’s a close cousin of cross-promotion, which we’ll untangle in a minute.

Here’s why it’s worth your time: when a respected brand builds something with you and shows it to their audience, you’re not shouting into the void hoping strangers trust you. You’re being introduced by someone their people already trust. That borrowed credibility is the magic, and it’s why a good co-marketing campaign can do in a few weeks what months of solo posting struggles to do.

How is co-marketing different from cross-promotion?

This trips people up constantly, so let’s make it clean. Co-marketing means you build something together, a shared asset both brands co-create and co-own the effort on. Cross-promotion means you each promote the other’s existing stuff to your own audience, no joint creation required. You mention their product to your list, they mention yours to theirs, and you both keep your own things.

Think of it this way: co-marketing is cooking a meal together in one kitchen; cross-promotion is trading leftovers from your two separate kitchens. Both are valuable, and honestly they pair beautifully, a lot of great partnerships start with a light cross-promotion to test the waters, then graduate to full co-marketing once the two brands trust each other. If you want to go deep on the lighter version, we’ve got a whole guide on how to do cross-promotion. For now, just know that co-marketing asks for more, more coordination, more trust, more shared risk, and gives more back when you get it right.

	Co-marketing	Cross-promotion
What you make	One shared asset, built together	Nothing new, promote existing stuff
Effort	Higher, jointly created	Lower, each promotes the other
Leads	Often shared (with consent)	Usually stay with each brand
Best for	A bigger, credibility-building push	A quick, low-risk first collaboration

How do you find the right co-marketing partner?

Here’s the part nobody tells you: the partner is the decision. Pick the right one and everything downstream gets easier; pick wrong and no amount of clever promotion will save it. So before you fall in love with a campaign idea, get deliberate about who you’re building it with. A good co-marketing partner clears three bars.

They share your audience but not your product. This is the sweet spot, same people, different offer. If you sell project-management software, a company that sells team-communication tools serves the same buyers without competing with you. You’re aiming for overlap in who you serve and separation in what you sell. Direct competitors are off the table; there’s no version of that where sharing leads makes sense.

Your quality and values actually match. When you co-create something, your name sits right next to theirs, and your audience will judge you by the company you keep. If their content is sloppy, their support is a mess, or their ethics make you wince, none of that stays on their side of the fence, it splashes onto you. So do your homework. Look at how they treat their audience, whether they deliver what they promise, and whether you’d be proud to have your logo beside theirs. Aligned partners protect each other’s reputations; mismatched ones quietly damage them.

The audiences are roughly comparable in reach. Co-marketing works best when both partners bring something to the table. A wildly lopsided pairing, a tiny brand and a giant one, can still work, but it usually turns into sponsorship or one side quietly carrying the other. That’s not wrong, it’s just a different deal, and you should name it honestly rather than calling it an equal partnership when it isn’t.

Where do you find these people? Look at the brands your audience already loves and mentions. Look at adjacent tools in your customers’ stack. Look at who’s speaking at the events your people attend, who’s guesting on the podcasts they listen to, and who keeps showing up in your co-marketing campaign daydreams. Then reach out like a human, warmly, specifically, with a real idea and a clear sense of what’s in it for them, not just you.

What are the main co-marketing formats?

Once you’ve got a partner, you need to decide what you’re actually making together. You don’t have to invent anything exotic, there are a handful of formats that reliably work, and the best one depends on what both audiences would genuinely find useful.

The co-created content piece or ebook

You combine your two areas of expertise into one genuinely valuable resource, a guide, a report, an ebook, a template kit. This is the classic co-marketing move because it’s evergreen, it showcases both brands as experts, and it gives both audiences something real to keep. Each brand contributes the parts it knows best, and you co-brand the finished thing. Best for: building authority and generating leads that both partners can (with consent) follow up on.

The joint webinar or live event

You host a live session together, one person from each brand, teaching something your shared audience cares about. Webinars are wonderful for co-marketing because the value is obvious, the format is interactive, and everyone who registers is a warm lead you both helped create. Best for: relationship-building, live Q&A, and a registration list you’ve clearly agreed to share fairly ahead of time.

The product bundle

If you both sell something complementary, you package them together, often at a friendlier combined price, so each brand’s product makes the other more useful. Best for: driving actual sales and introducing each brand’s customers to a tool that pairs naturally with what they already bought.

The joint offer or promotion

A special deal that only exists because you two teamed up, a discount for each other’s customers, a bonus when someone uses both, an exclusive perk. Best for: giving both audiences a concrete, time-bound reason to act, as long as any limits you mention are real and not manufactured.

The shared campaign

A bigger, themed push, a challenge, a content series, a co-hosted contest, an awareness campaign, that both brands run in parallel across their channels. Best for: making noise together around a moment or theme, and giving both audiences a shared story to be part of. This is the most ambitious format and the one that rewards the most planning.

Pick one. I mean it, the same way I’d tell you not to run five event formats at once. A co-branded ebook that also has a webinar, a bundle, and a contest bolted on is four half-projects wearing a trench coat, and both audiences will feel the seams. One clear format, executed with care, beats a sprawling everything-campaign every single time.

How do you split the work, costs, and leads fairly?

This is where good intentions meet reality, and it’s the part I beg you not to wing. The fastest way to turn a friendly partnership into a resentful one is to leave “who does what” and “who gets what” vague and hope it works itself out. It won’t. So before a single asset gets made, you two sit down and write it down. Not a scary legal contract necessarily, just a clear, shared agreement everyone can point back to.

Cover these, plainly:

• Who does which work. Who writes, who designs, who builds the landing page, who hosts the webinar, who edits, who handles tech. Divide it by strengths, then name owners so nothing falls in the cracks.
• Who pays for what. If there are real costs, ad spend, a designer, software, a prize, decide the split up front. Fifty-fifty is common, but “proportionate to what each side gets” is also fair. Just agree before money moves.
• How leads and data get shared. This is the big one, and it gets its own section below because it’s the ethical heart of the whole thing. Decide exactly which leads each partner receives, in what form, and what each is allowed to do with them.
• Who owns the finished asset. Can you both keep using the ebook after the campaign? Usually yes, but say so. Clarify usage rights so there’s no awkward “wait, you’re still promoting that?” later.
• The timeline and the goals. When does each piece ship, when do you go live, and what does success look like for both of you? Shared goals keep you rowing in the same direction.

Here’s the mindset that keeps partnerships healthy: aim for mutual value, not a scoreboard. The best co-marketing isn’t two brands each trying to squeeze more out of the other, it’s two brands genuinely trying to make the other look good, because that’s what makes people want to partner with you again. If you find yourself nickel-and-diming your partner over who got the slightly better deal, you’ve already lost the thing that makes co-marketing worth doing. Fair, generous, and clear beats clever and self-serving, every time.

How do you handle leads and data ethically?

Okay, this is the section I care about most, so I’m going to slow down and be direct, because it’s where well-meaning marketers get themselves into real trouble, ethically and sometimes legally. When you co-market, you’re often creating leads together, people who signed up for your webinar or downloaded your shared ebook. The temptation is to treat that whole list as a treasure chest you both get to raid. Please don’t. Those people are individuals with privacy rights, not a spoils pile.

Here’s how to do it right, and it really isn’t complicated once you commit to it.

Only share leads and data that both partners were consented to collect for this. When someone registers for your joint webinar or downloads your co-branded guide, the sign-up form should make it clear, plainly and up front, that they’re sharing their info with both brands and what each brand will do with it. If the form says both names and the person opts in knowing that, wonderful, you can both follow up as agreed. If it didn’t say that, you don’t get to retroactively decide it did. Consent is about what the person actually understood and agreed to, not what would’ve been convenient for you.

Honor each brand’s privacy policy and the rules that apply. Both partners have their own privacy commitments, and both have to keep them. Depending on where your people are and how you’re contacting them, real rules apply, things like GDPR for data handling and CAN-SPAM for email, by function. I’m not your lawyer and this isn’t legal advice, so check what applies to your situation, but the spirit is simple: be transparent about what you collect, why, and how someone can opt out, and then actually respect it.

Never dump the other partner’s list into your CRM without consent. This is the cardinal sin of co-marketing, and it happens all the time. Just because your partner brought their audience to the campaign does not mean their subscribers are now yours to email whenever you like. You get the leads you jointly, transparently generated together, handled the way you both agreed. You do not get to absorb your partner’s entire existing list into your database because you did one webinar together. Doing that isn’t just rude, it can violate privacy law and it will torch the partnership the moment they find out.

Disclose anything sponsored or paid. If part of your campaign involves payment, one brand paying the other, an affiliate arrangement, a paid placement, say so clearly to the audience. People deserve to know when something is a paid relationship versus a genuine, unpaid endorsement. Disclosure isn’t just polite; in many places it’s required, and either way it protects the trust that makes the whole thing work.

Get this part right and something lovely happens: your partner learns you’re safe to work with. Word travels, and the brands worth partnering with start seeking you out, because you’re known as the one who handles people’s data like it matters. That reputation is worth more than any single campaign’s lead haul.

How do you align two brand voices?

You’ve got two brands with two personalities, and now you’re speaking with one voice on a shared thing. If you don’t talk about this on purpose, you get a Frankenstein asset, half playful, half buttoned-up, that feels off to both audiences without anyone quite knowing why. A little intention fixes it.

Have a short, honest conversation early: how does each brand like to sound, and where’s the comfortable middle? You’re not erasing either personality, you’re finding the overlap where both feel like themselves. Decide the practical stuff too, tone, formatting, how you’ll each handle your logos and colors, who gets the final proofread. Agree on the messaging so you’re both describing the collaboration the same way, because nothing confuses an audience like two partners telling two different stories about the same campaign. When both brands sound comfortable and consistent, the audience relaxes, and the whole thing reads as a real partnership instead of an awkward merger.

How do you promote to both audiences?

This is the payoff, the moment both brands point their audiences at the thing you built together. And the golden rule is simple: both partners promote, genuinely, to their own people. The whole deal falls apart if one side does all the heavy lifting while the other posts once and calls it a day. So agree on the promotion plan the same way you agreed on the work.

A healthy joint promotion usually includes:

• A coordinated announcement from both brands, ideally around the same time, so the audiences see it land together and it feels like a real event.
• A build-up from each side, teasers, previews, a behind-the-scenes look at why you teamed up, so people understand the value before you ask for anything.
• Consistent messaging across both brands, so someone who follows you both sees a coherent story, not two mismatched pitches.
• Reminders and a clear call to action, the “webinar’s tomorrow,” the “last day for the bundle,” always honest about any real deadlines and never inventing fake ones.
• A shared recap afterward, so both audiences see the collaboration land and feel good about having been part of it.

The practical headache is coordination: two brands, a stack of social networks each, and everything needing to go out roughly in sync. That’s a lot of tabs and a lot of “wait, did you post yet?” This is exactly the kind of moment where scheduling everything in advance saves your sanity, which is where a tool like SocialBlaze earns its keep. More on that in a second.

How do you measure whether it worked?

Before you launch, agree on what success even means, because “it went great!” is a vibe, not a result. And here’s my one firm promise to you: no honest guide will tell you co-marketing delivers some specific percentage lift, because that number doesn’t exist in the abstract. Anyone quoting you a guaranteed “X% more leads” is selling, not teaching. What I can teach you is how to find your own real numbers.

Decide together which metrics actually reflect your shared goal, then track them for both sides:

• Reach and awareness: how many new people each brand got in front of. Watch your follower and impression trends across the campaign window in your analytics.
• Leads generated: registrations, downloads, sign-ups, counted honestly and attributed to the campaign with a dedicated landing page or tracking link.
• Engagement: how people actually responded, replies, shares, questions, attendance rate for a webinar.
• Conversions: if the goal was sales, use unique links, codes, or a landing page so each brand can see what the campaign actually drove.
• The relationship itself: softer, but real, would you both do it again? A partner you’d happily work with a second time is a genuine win.

Then do the unglamorous, valuable thing: debrief together honestly. What worked, what flopped, what you’d change. Share the numbers openly with your partner rather than spinning them. That honesty is what turns a one-off campaign into a long partnership, and long partnerships are where co-marketing really pays off.

Where does SocialBlaze fit in?

Let me be straight about what SocialBlaze does and doesn’t do here, because I’d rather earn your trust than oversell you. SocialBlaze won’t find your partner, negotiate your lead-sharing agreement, or write your ebook, those are the human parts, and they’re on you and your partner. What SocialBlaze handles is the coordination headache: getting the joint social push out the door across both brands, on time, without living in a spreadsheet of “who posts when.”

You can schedule the whole announcement-through-recap sequence in advance across every network both brands are on, so your coordinated posts actually go live together instead of whenever someone remembers. You can auto-publish the “we’re live now” post at the exact moment your webinar starts. And because replies land in one unified inbox, you can catch the questions and the interest the campaign stirs up in a single place, on both brands, instead of hunting across ten apps. It’s the quiet operations layer that makes a two-brand campaign feel doable, so your energy goes into the partnership, not the logistics.

What if your first co-marketing campaign flops?

First, breathe, because this happens to nearly everyone’s first try, and it is not a verdict on you. A quiet campaign is data, not a disaster. Maybe the audiences overlapped less than you thought, maybe the asset missed what people needed, maybe the timing was rough. Run it warmly anyway, treat your partner well throughout, and then get curious instead of discouraged.

Debrief with your partner honestly, look at where people actually dropped off, and ask what you’d both change. Often the fix is small, a better hook, a clearer offer, a tighter audience match, and the second campaign barely resembles the first. And even a “failed” campaign that leaves you with a partner who trusts you and would gladly try again is quietly a success, because that relationship is the asset that compounds. I promise this gets easier. Your job right now is just to run the next one a little wiser.

Frequently asked questions

What’s the difference between co-marketing and co-branding?

Co-marketing is two brands jointly promoting a shared asset or campaign to both audiences, usually for a set period. Co-branding is deeper and more permanent, two brands combining into a single product or offering that carries both names on an ongoing basis. Co-marketing is a campaign you run together; co-branding is a product you build together. Most partnerships start with co-marketing because it’s lower-commitment and easier to test.

Do we have to share our email lists with each other?

No, and you should be careful here. You share only the leads you jointly and transparently generated for this campaign, where the person clearly understood both brands would receive their info and opted in on that basis. You never hand over or absorb an existing subscriber list wholesale without those people’s consent. Handling shared leads this way keeps you compliant with privacy expectations and, honestly, keeps the partnership intact.

How do we choose who does what?

Divide the work by each brand’s strengths, then write it down before you start. Whoever’s better at design handles the visuals, whoever’s the stronger presenter hosts the webinar, and so on. Name a clear owner for every task, agree on who pays for any real costs, and set a timeline. The goal is that nobody is guessing about their responsibilities once the campaign is live.

Should we disclose if money changed hands?

Yes. If any part of the collaboration is paid, one brand paying the other, an affiliate arrangement, a sponsored placement, be transparent about it with your audience. People deserve to know whether an endorsement is genuine and unpaid or part of a paid relationship, and in many places clear disclosure is legally required. Being upfront protects both brands’ credibility and the trust that makes co-marketing work in the first place.

How long does a co-marketing campaign usually take to plan?

It depends on the format and how well the two teams communicate, but give yourself real runway rather than rushing it. A simple joint offer might come together in a couple of weeks, while a co-created ebook or a big shared campaign needs longer for creation, review, and coordinated promotion. Build in time for both partners to weigh in and for the promotion to breathe, since a rushed launch usually shows.