What is a Cross-Promotion Partnership?
A cross-promotion partnership is a swap between two small businesses that serve the same customer without competing: you mention them to your audience, they mention you to theirs. The swap can be a newsletter shout-out, a bundle sold together, a social post, a joint discount or a spot on each other’s “tools we recommend” page. No money changes hands.
The idea works because your customer buys several things on the way to solving their problem. A wedding photographer needs a contract tool, a booking calendar, an album printer and an editing course. Each of those businesses has a slice of the same audience, and each is stuck at a few hundred readers or followers. A swap doubles your reach to people who already trust a voice they follow.
When should you use it?
Use it when:
- You have SOME audience to offer: 100 newsletter readers, 500 engaged followers, 30 paying customers. You need something to trade.
- Your customer clearly uses other products or services before, during or after yours.
- You sell to a niche (freelance illustrators, small breweries, home-schooling parents) where small brands know each other.
Skip it when:
- You have no audience at all. Start with a newsletter launch and come back at 100 readers.
- The only candidates are direct competitors. Sharing your customers with someone who sells the same thing is a gift with no return.
- Your product is regulated in a way that makes endorsements risky (health claims, financial products) without legal review.
How do you do it, step by step?
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Map what your customer buys around you. Take your customer journey map or list it from interview notes: what does your customer buy or use in the month before, during and after using your product? A freelance illustrator, say: portfolio site, contract templates, invoicing app, print shop, drawing tablet, an online course. Each item is a category of partner.
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List 15 candidate partners in Google Sheets. For each category, find 2 or 3 small brands of similar size. Columns: name, what they sell, audience channel (newsletter, Instagram, community), rough audience size, contact, overlap score 1 to 5, notes. Your competitor analysis grid research turns up many of them, since indirect competitors and neighbours appear in the same searches.
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Score the fit before reaching out. Three checks: same customer (yes/no), audience within 3 times your size either way, and a brand you’d recommend to a friend. Use the product or read a few issues first. Your audience will hold YOU responsible for anything you recommend.
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Pitch a specific swap, with the copy already written. Founders say yes to concrete, low-effort offers:
Hi Mo, I run Linework, a contract template shop for freelance illustrators, with a newsletter of 640 illustrators. Your portfolio builder keeps coming up when I ask readers what they use. Would you swap mentions? I’d feature you in my 4 November issue, and you’d mention us in one of yours that month. I’ve drafted a 60-word blurb for each side so it takes you 2 minutes. Interested?
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Agree the details in one message. Format (a 60-word mention, a solo post, a bundle), date, link, any special discount code and who tracks what. A short written note avoids “I thought you meant…” later.
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Track with UTM tags. UTM tags (short for Urchin Tracking Module) are labels added to the end of a link so your analytics shows where visitors came from:
?utm_source=partnername&utm_medium=newsletter&utm_campaign=swap-nov. Google’s free Campaign URL Builder makes them. Give your partner the tagged link and set up analytics to read it. -
Use built-in recommendation features. For newsletters, Substack Recommendations and the beehiiv recommendation network (included on beehiiv’s free plan) let you recommend each other permanently on sign-up pages. A recommendation keeps working after the one-off mention is forgotten.
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Report back and decide on round two. Two weeks after both mentions, share your numbers with the partner (clicks, sign-ups, sales) and ask for theirs. Good swaps become recurring: a quarterly mention, a permanent bundle, a co-hosted event.
What does a worked example look like?
Say Nadia runs Linework, a shop selling contract templates to freelance illustrators, with a newsletter of 640 readers. Her map shows illustrators also pay for portfolio sites, print-on-demand shops, invoicing apps and drawing courses.
She lists 14 candidates, scores them and pitches the top 6, each with blurbs ready. Four say yes. The portfolio builder (1,100 readers) brings 58 clicks, 31 newsletter sign-ups and 7 template sales through its tagged link. A print shop’s Instagram story brings 12 clicks and nothing else. A drawing-course creator agrees to a bundle: course buyers get 20% off Linework templates, and that bundle produces 19 sales in the first month.
Nadia keeps the portfolio builder and the course creator as quarterly partners and drops the print shop, whose followers turned out to be art buyers instead of illustrators.
Which free tools help?
| Tool | What you use it for | Free plan |
|---|---|---|
| Google Sheets | Partner list, fit scores, swap dates and results | Free with a Google account |
| Google’s Campaign URL Builder | Making UTM-tagged links for each partner | Free |
| Substack | Recommending partner newsletters on your sign-up flow | Free while your newsletter is free |
| beehiiv | Recommendation network for newsletter swaps | Included on the free plan |
| Canva | Bundle graphics and shared social posts | Free plan available |
What mistakes should you avoid?
- Swapping with someone 20 times your size. They have nothing to gain, and they’ll say no or ignore you. Pitch partners within about 3 times your size.
- Overlapping audience on paper only. “Women” or “small businesses” is no overlap. Check that their readers are the specific people who buy from you.
- Making the partner do the work. Write both blurbs, size the images and send the link. Every extra step on their side lowers the odds it happens.
- No tracking. Without tagged links or a unique code you can’t tell a great partner from a dud.
- One-off thinking. The first swap is a test. The value sits in the partners who keep working together for a year.
How do you know it worked?
Our rule of thumb: a swap worked if it brought you new subscribers or customers worth at least 10% of your existing audience, and at least half of the partners you swap with produce measurable clicks. Track sign-ups and sales, since clicks alone can be curious browsers.
Go: repeat and deepen the partnerships that worked. No-go: if three swaps in a row bring almost nothing, revisit your customer map. You are probably picking partners whose audience looks like yours on paper but buys for different reasons.
What should you do next?
Turn your best partnerships into co-hosted events, and keep growing your own list through your newsletter so you have more to offer each time. If you’d like structured feedback on who your customer really is before picking partners, the startup game for women by Fe/male Switch guides you through validation with an AI co-founder.
FAQ
How do I find cross-promotion partners?
List everything your customer buys or uses around your product, then search for small brands in each category on Instagram, in newsletter directories and in communities your customers join. Ask your customers which tools they use, since their answers point straight at partners.
What if my audience is much smaller than my partner’s?
Make up the difference with something else: write their content, give them an exclusive discount for your audience, or offer two mentions for their one. Still, the best first partners are within about 3 times your size.
Do cross-promotion swaps need a contract?
For a simple mention swap, a written message confirming dates, format and links is enough. For bundles where money is collected and split, write a short agreement covering who sells, who handles refunds and how revenue is shared.
Updated 26 October 2026 · Written by the Fe/male Switch team