The cheapest way to reach a new audience is to borrow one that already exists.
Someone out there has spent years earning the trust of the exact people you are trying to reach. You have done the same for a crowd they would love to meet. Cross-promotion is just the two of you agreeing to make an introduction, each to the other’s people. No ad budget, no cold pitch, just a fair trade of attention.
It is value for value in its most practical form, and one of the few growth channels that gets cheaper and more effective the better you get at it.
What cross-promotion actually is
Cross-promotion is two or more businesses promoting each other to their audiences, because each has something the other wants. You mention them to your readers, they mention you to theirs, and both audiences discover something genuinely useful.
The word covers a lot of ground. A newsletter recommending another newsletter is cross-promotion. Two podcasters swapping guest spots is cross-promotion. A software company bundling with a complementary tool is cross-promotion. Different channels, same move: trade access to your audience for access to theirs.
What separates it from an ad is that nobody pays. What separates it from a cold pitch is that both sides gain. It is a trade, in kind, between real businesses.
Why it works
Borrowed trust is the whole reason.
When a site your reader already trusts points them your way, you inherit a slice of that trust before they have read a word of yours. A stranger who arrives from a cold ad is skeptical by default. Someone who arrives because a source they like recommended you is already halfway to convinced. That warm handover is worth more than the raw traffic number, and you cannot buy it, because the moment money changes hands it stops being a recommendation and starts being an ad.
It is also mutual, which changes how it goes. Your partner wants the promotion to land, because they want your audience to think well of their taste, and because they want to do it again. Both of you are pulling the same way. What you put in is what comes back.
Cross-promotion examples, by channel
Here is what it looks like in practice. Most of these work in either direction, and the best campaigns combine a few.
Newsletters
The classic swap: you recommend their newsletter to your list, they recommend yours to theirs, ideally in the same week so it reads like a genuine tip rather than a favour being repaid. Beyond the one-off, plenty of newsletters run a permanent recommendations widget, sending each other a trickle of subscribers for months. You can also trade a dedicated section, a classified, or a full guest issue.
Podcasts
Swap guest spots: you go on their show, they come on yours, and each of you gets introduced to a warm, attentive audience. Lighter touch: a cross-promo read, where each host records a short plug for the other’s show. Bigger swing: a feed drop, where you each publish the other’s best episode straight into your own feed.
Blogs and content
Write a guest essay for their site and host one from them. Run a content swap, or co-author a single piece and both publish it. Trade a relevant link where it genuinely helps the reader. Done well, this is how good links get built without the cold-email slog. Keep it relevant and occasional rather than systematic, and you stay well clear of the line Google actually cares about.
Social
Collaborate on a post so it lands in both audiences’ feeds at once. Swap shoutouts or stories. Run a joint live stream or space, bringing both sets of people into the same room. Take over each other’s accounts for a day. The currency here is reach, and “you give me a link, I will put your launch in front of my followers” is a perfectly good trade.
Products
If your product pairs naturally with someone else’s, bundle them, so buying one surfaces the other. Build an integration and each promote it to your users. Run a shared campaign. This is cross-promotion with the highest stakes and the deepest payoff, because you are trading customers, not just clicks.
Events, webinars and giveaways
Co-host a webinar and both promote it, splitting the work of filling the seats and doubling the turnout. Run a giveaway together, where entrants discover both brands. Share a booth, a panel, a workshop. Any event is easier to fill and worth more when two audiences show up instead of one.
It does not stop at two
Some of the best cross-promotion involves three or four relevant, non-competing sites at once.
Four newsletters can run a round-robin, each recommending the next, so everyone gains from the whole loop. A handful of complementary products can go into a single bundle. Several creators can co-host one event that none of them could fill alone. Everyone brings an audience, everyone reaches all the others, and the total is bigger than the pile of one-to-one swaps you would have done instead.
The only hard part is coordination. Four people planning a joint campaign over email is a special kind of misery. A group chat, everyone in one room sorting out who does what, is often the difference between it happening and it dying in a reply-all.
How to run one that works
A few things separate a cross-promotion that lands from one that flops.
Pick a genuinely relevant partner. Their audience should be the people you are trying to reach, not just a big pile of people. Relevant and small beats huge and random every time.
Match up roughly on size. A fair swap is an even one. If your list is ten times theirs, the trade is lopsided, and lopsided trades breed quiet resentment. Trade with peers, or make up the gap with something else of value.
Make it easy to say yes. Do the work. Draft the copy, suggest the dates, hand them something they can ship in five minutes. The easier you make it, the more often the answer is yes.
Mean it. Recommend things you would actually recommend. Your audience handed you their trust, and a lazy cross-promotion spends it. One recommendation you believe in beats ten you do not.
Measure it. A tracked link, or a simple “where did you hear about us”, tells you which partners were worth it. The good ones become a habit.
What to avoid
The failure modes are predictable.
Irrelevant partners, where you chased reach over fit and both audiences just shrug. One-sided asks, where you want the promotion but bring nothing worth trading, which is a cold pitch wearing a nicer word. And spammy, link-only swaps done at volume to move rankings, which is the one version Google actively discounts. Cross-promotion works precisely because it is real. Strip the realness out and all you have left is spam.
Where to find partners
Everything above runs into the same wall: finding the right site to trade with. Link building without the cold-outreach grind goes deep on this, but the short version is that firing cold emails at strangers is the slow, miserable way to do it.
Engado exists to make that part quicker. It surfaces good-fit, verified businesses in your niche, so you can search, filter, and start a warm conversation with the ones worth trading with, one-to-one or with a few at once in a group when the idea is bigger than a pair. (A nightly batch job we named Gerald does the surfacing. Gerald asks for nothing and judges no one.) It will not change your life. It just means you spend your time talking to relevant sites, instead of guessing.
Frequently asked questions
What is cross-promotion? Cross-promotion is two or more businesses promoting each other to their audiences, because each has something the other wants. You send people their way, they send people yours, and nobody pays, because the trade itself is the payment.
What are some examples of cross-promotion? Newsletter swaps, podcast guest exchanges, co-authored blog content, joint social posts or live streams, product bundles and integrations, and co-hosted webinars or giveaways. Anywhere you have an audience, you can trade access to it.
How do I do cross-promotion? Find a genuinely relevant partner with a roughly comparable audience, propose a fair and even swap, make it easy for them to say yes, promote only what you would actually recommend, and track the results so you know who to work with again.
Is cross-promotion effective? It works because the audience arrives warm, recommended by a source they already trust, which is worth far more than the same number of cold visitors. It is also cheaper than ads and builds a relationship you can trade with again.
What is the difference between cross-promotion and co-marketing? They overlap heavily. Cross-promotion usually means trading audience access: you promote me, I promote you. Co-marketing usually means building something together, a joint report, event or campaign, and promoting it to both audiences. Most real partnerships end up doing a bit of both.
The short version
Cross-promotion is the oldest growth trick there is: borrow an audience by lending yours. It is value for value in its simplest form, a fair trade of attention between real sites, and it works in every channel you already use, from newsletters to podcasts to products.
Get three things right and it rarely fails. Pick a relevant partner, make the swap fair, and promote only what you would genuinely recommend.
The one hard part is finding the right partners, which is exactly what Engado is built to help with. Work out what you bring. Then go and find the sites worth trading it with.