OnMaCon is a specialized agency for fashion and lifestyle brands that sell or want to sell on marketplaces such asZalando, OTTO, About You, and Amazon. We handle retail media and advertising, ensure accurate product data, and provide data-driven management—all from a single source, across all marketplaces.
Retail Media & Marketplace Advertising
We help fashion and lifestyle brands truly perform on marketplaces.
With strategic retail media, clear campaign management, and data-driven decision-making, we ensure that budgets are spent where they generate sales—on Zalando, OTTO, About You, and Amazon.
Services
AI that understands marketplaces.
For over 20 years, we have been optimizing product data and campaigns for fashion and lifestyle brands.
Today, this expertise is embedded in our own tools—and AI enables us to apply it more quickly, more precisely, and on a larger scale.
No generic, off-the-shelf solutions—just optimization based on a genuine understanding of the marketplace.
We know which campaign settings on Zalando determine visibility (and profitability). Which mistakes on OTTO cost reach. Which attributes, titles, and content influence performance. Which specifications are mandatory on Amazon. And where advertising budgets are wasted on About You, even though there’s more potential in the product lineup.
It is precisely this knowledge that informs our analyses, tools, and recommendations.
This allows us to identify where money is being lost more quickly, optimize our processes more precisely, and tap into potential that simply couldn't be achieved manually.
For us, AI isn't just a buzzword. It's the tool that helps us make better use of our 20 years of experience.
Successful on the OTTO marketplace
Launching a new brand on OTTO brings with it many uncertainties. How do you build visibility from scratch, and what role do product data and advertising play?
In our case study with Himalaya Clothing, we show how this can become a success story.
That's us!
OnMaCon is your marketplace agency for fashion and lifestyle. We bring structure to your product data (variants, sizes, colors, materials, fits) and turn it into better visibility and more sales—on Zalando, OTTO, About You, and Amazon. To do this, we manage retail media in such a way that budgets don't just run, they deliver results. Would you like a quick check to see where your potential lies?
About us
Blog posts
Magazine
In our magazine, we regularly share the latest news, expert knowledge, and the newest developments in fashion on marketplaces.
Questions We Are Often Asked
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Fashion marketplaces have their own set of rules: seasonality, sizing conventions, return rates, collection changes, and platform-specific algorithms. If you don’t deal with these on a daily basis, you’re wasting your budget. We’ve been working with fashion and lifestyle brands for years and know the levers that really matter.
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We handle the day-to-day management of campaigns, establish structures, and provide transparency through our own BI system. At the same time, we serve as a sounding board for strategic decisions—not just a service provider that carries out tasks.
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That depends on the initial situation. Where campaign structures are poor or budgets are used inefficiently, quick wins are often possible within a few weeks. Structural improvements—such as product data, product assortment management, and international rollouts—take more time. We clearly demonstrate this in a potential analysis.
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There’s no one-size-fits-all answer to that—it depends on the marketplaces, the size of your product range, and the scope of services. The best way to get started is with a free potential analysis: We’ll take a look at your current situation and honestly point out where there’s room for improvement—and what a partnership with us could realistically achieve.