We are not a full-service agency. We specialize in marketplaces and product data marketing—and have been doing exactly that for over 20 years. When you work with us, you don’t get generalists—you get teams that manage these platforms on a day-to-day basis.
Is comprehensive support important to you? Together with a network of specialized partners, we can offer just that— just reach out to us.
About us
We are OnMaCon
We are an agency specializing in marketplaces and product data marketing—focused on fashion and lifestyle brands that want to truly excel on Zalando, OTTO, About You, Amazon, and international price comparison sites. It’s not just about having a presence; it’s about scaling profitably.
Founded in 2005 in Hamburg—a city that has shaped German commerce like no other. This connection to the world of commerce is in our DNA: We don’t think in terms of campaigns, but in terms of margins, data, and long-term performance. More than 20 years later, we are a specialized agency that understands how marketplaces work.
What Sets Us Apart
Here's why brands choose us:
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We rely on our own tools for listing optimization on marketplaces, GEO optimization of Google Shopping feeds, campaign management, and performance analysis. These tools were developed based on our day-to-day work with our clients—they’re not off-the-shelf solutions.
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We manage marketplace advertising and product search engines in more than 15 European countries simultaneously while maintaining a clear overview. We know which countries offer the most efficient use of budgets and reduce "wasted spend" to drive profitable growth in competitive markets.
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We use artificial intelligence to leverage our expertise and experience efficiently. Not as a buzzword, but as a practical tool. Our proprietary AI-powered tools help us manage, analyze, and optimize campaigns. This allows our clients to benefit directly from our team’s collective expertise: faster, more precise, and easier to scale than with manual processes alone.
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Listening, understanding, finding solutions together, and having a laugh along the way. That’s important to us. And no AI can replace that.
Want to know if we're a good fit? I'm Andrea, and at OnMaCon, I'm the first point of contact for new clients and agency partnerships. Message me directly or book an appointment right away via Calendly.
Our History
2005
The company was founded in Hamburg by Tobias and Andre, who had already gained experience in online marketing and working with service providers while at OTTO. Their goal: to build an agency that truly understands performance marketing and delivers real added value as a service provider.
2013
Strategic realignment: A broad-based agency specializing in affiliate marketing, PSM, SEO, and SEA transforms into a specialized agency for product data marketing. The focus shifted to feed optimization and the management of product data campaigns—an area that hardly anyone at the time recognized as a distinct discipline. The agency’s proprietary optimization tools, such as the Synonymizer, Color Translator, and a tool for managing size availability, were unique in the market at the time.
2017
First customers on Amazon and eBay. The realization: marketplaces are the future of online retail. And they require the same data-driven management as traditional performance channels. Other marketplaces quickly followed. In addition: we built a BI system that consolidates data from all performance channels and serves as the foundation for campaign management—and as a transparent reporting tool for our customers.
2020
Data optimization and advertising on marketplaces become the core offerings. Andrea and André join the management team. OnMaCon evolves into a specialized marketplace agency with its own BI system for cross-channel performance management.
2024
Integrating marketplaces with our BI system to provide the best possible overview for our customers who operate on Zalando, About You, and Amazon across many markets. The Wasted Spend Analysis will be our most important tool for analyzing the potential of existing campaign setups.
2025
Focus on fashion and lifestyle: Advertising and data optimization on Zalando, OTTO, About You, and Amazon—for brands looking to grow profitably on these platforms. OnMaCon is one of the few agencies participating in the beta test for OTTO’s keyword targeting and is supporting the team in its further development.
2026
Our proprietary tool for optimizing product listings on marketplaces and our Product Data OptimAIzer: AI optimization for Google Shopping feeds. Technology developed through our daily work with brands, which we use for our clients.
Our partners
We work hand in hand with other specialized agencies and technology partners to provide you with a truly impressive range of performance marketing services.
