Cross promoting with non-competitive businesses gives two brands a practical way to acquire customers by recommending each other. The strongest partnerships bring together companies that serve the same type of customer but sell different, complementary products. Each brand keeps its own store, audience, and customer data while gaining trusted exposure to a new group of likely buyers.
For ecommerce brands, the greatest opportunity is not a single social post or newsletter. It is an automated co-marketing system. Both partners can recommend one another on thank you pages, in post-purchase email and SMS flows, and inside outgoing orders. Once those placements are built into the customer journey, the partnership can introduce each brand to qualified shoppers after every purchase with little ongoing campaign work.
What does cross promoting with a non-competitive business mean?
Cross promotion is a reciprocal marketing partnership in which each business introduces the other to its audience. A good partner serves a similar customer without offering a substitute for your product. A trail flask brand and a merino beanie brand, for example, may appeal to the same outdoor shopper while meeting different needs.
A simple test is to ask whether a customer could reasonably want both products in the same season or routine. If buying one makes the other less necessary, the brands are probably competitors. If the products naturally belong together, the recommendation can be useful to the customer and valuable to both partners. Read how to find complementary brand partners for a more complete framework for evaluating audience, product, price, and brand fit.
Why cross promotion can acquire customers at a low CAC
Most paid acquisition channels charge a brand for every impression, click, or conversion. Cross promotion uses distribution the partners have already built. Each business has invested in acquiring its customers, earning their trust, and creating the touchpoints where a thoughtful partner recommendation can appear.
There are still costs: teams need to choose a partner, create the offer, build the placements, and review performance. However, there is no media auction to fund every time another customer sees the recommendation. As more eligible buyers move through an automated promotion, the setup cost is spread across more opportunities. A relevant, reciprocal partnership can therefore become a powerful source of qualified customers at a much lower customer acquisition cost (CAC) than many paid campaigns.
The quality of the recommendation matters as much as the cost. Customers discover the partner through a business they already chose to buy from, so the introduction carries context and trust that a cold ad does not. For a deeper look at the economics, see how brand collaborations can lower ecommerce CAC.
Automation turns co-marketing into an always-on channel
One-time campaigns can create a burst of traffic, but they also require repeated scheduling, approvals, and coordination. Automation changes the partnership from an occasional promotion into a dependable acquisition loop. Each brand agrees on the audience, message, offer, and tracking once, then places the recommendation in moments that already occur after every order.
The result is a two-way system: Brand A automatically introduces qualified customers to Brand B, while Brand B does the same for Brand A. Both businesses continue acquiring customers through their normal channels, and every new order creates another opportunity for the partnership to work.
Recommend the partner on the thank you page
The order confirmation or thank you page is one of the easiest places to begin. The customer has just completed a purchase and is still engaged with the brand. A concise partner recommendation, supported by a relevant image and an exclusive offer, can provide a useful next discovery without interrupting checkout.
Use rules to show the promotion only to appropriate customers and exclude orders where the recommendation would not make sense. A unique URL or discount code should lead to a focused partner landing page. Learn more about structuring this placement on the post-purchase promotions page.
Build the recommendation into email and SMS flows
Email and SMS extend the partnership beyond the confirmation screen. A partner feature can be added to a post-purchase flow after essential order and shipping messages have been delivered. The copy should sound like a genuine recommendation from the sending brand, explain why the products fit together, and give the customer one clear action.
Each company continues sending through its own platform, so customer lists never need to be exchanged. Audience filters, marketing consent, timing rules, frequency caps, and an automatic end date help protect the customer experience. Explore email and SMS promotions or read the guide to automated email list swaps between ecommerce brands.
Carry the automation into shared mailers and packaging inserts
Cross promotion can continue offline without becoming a manual project for every order. Partners can establish recurring shared mailer campaigns, splitting print and postage while reaching a combined audience. They can also place reciprocal packaging inserts or samples inside shipments that are already leaving the warehouse.
These physical placements become repeatable when the fulfillment rules are defined in advance. Specify eligible products, order segments, quantities, start and stop dates, and what happens when inventory runs low. A 3PL or warehouse can then add the partner piece to qualifying orders as part of its normal packing workflow. The customer receives a tactile recommendation at unboxing, while neither marketing team has to coordinate individual shipments. The packaging insert swap guide covers the operational details.
How to build an automated cross-promotion
A durable partnership starts with a simple operating plan. Both brands should agree on:
- The customers each brand will include or exclude
- The thank you page, email, SMS, mailer, and packaging placements being exchanged
- The offer, approved copy, creative assets, landing page, and promotion period
- Comparable exposure based on order volume, audience size, or placement value
- Unique codes and UTM parameters for attribution
- The review schedule, success metrics, and conditions for pausing the automation
Start with one or two placements, confirm that the audience responds well, and expand the partnership after the data supports it. Other collaboration formats can complement the automated foundation. Partners might run a social giveaway, create a shared gift bundle, or produce co-marketing content together. These campaigns can create additional reach, while the post-purchase system continues working in the background.
Measure new customers and CAC, not just clicks
Give every partner and placement a unique code or tagged URL. Then count the first-time customers acquired through those identifiers. Include creative, discounts, printing, fulfillment fees, software, and team time when calculating the true cost of the program. Divide that total by the number of new customers to find the partnership's CAC.
Review conversion rate, average order value, contribution margin, repeat purchase rate, unsubscribes, and complaints alongside CAC. A low-cost first order is only valuable when it comes from a customer who fits the brand and has the potential to return. Compare these results with paid acquisition using the same cost and first-time-customer rules.
If a partnership produces profitable new customers without hurting the customer experience, keep the automation running and optimize it over time. Its real advantage is compounding efficiency: the initial work can continue creating trusted introductions long after a one-time campaign would have ended.
Find the right brand and start the loop
Branduo helps verified ecommerce brands find complementary partners for automated co-marketing and other collaborations. Join free at app.branduo.io, create a clear profile of your audience and capabilities, and connect with businesses that can offer a fair exchange of trusted customer recommendations.
Choose a complementary partner, launch a measurable post-purchase placement, and automate the parts that both teams would otherwise repeat. A strong match can turn every new order into the beginning of another low-CAC customer relationship.