OTTO Marketplace Agency: Onboarding, Listings and Retail Media
An OTTO marketplace agency manages a brand's sales on otto.de, from the application to OTTO Market through product data in OTTO Partner Connect to Sponsored Product Ads and reporting. The Marketplace Guys from Bielefeld handle these steps and have developed their own advertising tool: marginly, an official OTTO Service Partner built on the official OTTO Ads API.
OTTO does not replace Amazon, it complements it: a curated platform with its own customer base in Germany and fewer sellers per category. That is why we plan both channels together, with aligned prices, synchronized stock and reporting on contribution margin rather than revenue alone. As an Amazon Ads Partner with more than 15 scaled consumer brands, we carry over what works on Amazon and leave out what OTTO does not offer.
You get an assessment of listing quality, your setup in OTTO Partner Connect and advertising potential for your catalog.
Our Services
What we take care of for your sales on otto.de
OTTO Onboarding and Listing Optimization
We bring your catalog into OTTO Partner Connect (OPC), the seller portal of OTTO Market, complete and compliant. This covers the application, category mapping, all mandatory attributes, variants, size charts and images that meet OTTO's image guidelines. Before every upload we check the data against the validation rules, because incomplete product data leads to rejections there. You measure progress by how many items are live without error messages.
OTTO Sponsored Product Ads
Sponsored Product Ads are the core ad format for sellers on otto.de, managed in OTTO Partner Connect or via the official OTTO Ads API. As an OTTO ads agency, we build campaigns per product line, combine keyword targeting with OTTO's automatic search term selection and set bids based on each item's margin. Keywords that sell get more budget, keywords without orders get lower bids. We steer by TACoS, meaning ad spend relative to total revenue.
Multi-Channel Integration with Amazon
OTTO delivers the most when it runs alongside a working Amazon business rather than as an island. We define which items belong on both marketplaces, how prices relate to each other and how stock stays in sync, so nothing gets sold that is no longer in the warehouse. Technically, we connect OTTO to your ERP or PIM through the Partner Connect interface or a middleware. That way you maintain product data in one place.
Pricing and Assortment Control
Not every Amazon bestseller makes money on OTTO. We calculate each item's contribution margin after OTTO commission, shipping, returns and ad costs, and use it to decide what gets listed, advertised or left out. We keep prices consistent across channels so you do not undercut yourself. For items with direct competition, we regularly compare price, delivery time and availability.
Reporting and KPI Steering
Every week you get a report with revenue, ad spend, TACoS and contribution margin per item, with organic and paid sales shown separately. Revenue and ad spend come from OTTO Partner Connect and the OTTO Ads API, the contribution margin from the cost prices, fees and returns you provide, not from estimates. Every deviation comes with what we conclude from it and what we will change the following week. That way you see, without a slide deck, which items are growing and where budget is being lost.
How we work
From onboarding to scaling
Onboarding and OPC Setup
First we check whether your catalog fits OTTO and prepare the application to OTTO Market. Once approved, we set up OTTO Partner Connect: company details, bank account, shipping profiles, return addresses and compliance documents. We take over existing accounts with an audit. Only OTTO decides on admission, so we do not guarantee acceptance; instead we deliver complete documents.
Listing Audit and Data Quality
In the audit we check every item for mandatory attributes, category mapping, images, variants and size charts. We fix faulty records first, because they block items completely. Then we improve titles, descriptions and filter attributes so your products show up in OTTO search and in the filters. The result is a status list of all items that you can view at any time.
Ad Setup with Sponsored Product Ads
Once the items are cleanly live, we launch Sponsored Product Ads with a clear structure: campaigns per product line, keyword targeting for the most important search terms and OTTO's automatic search term selection as a comparison group. We start with cautious bids and fixed daily budgets. During the ramp-up phase we check the data daily, so it becomes clear early on which terms sell and which only cost clicks.
Scaling and Optimization
After that we work in a fixed weekly rhythm. Bids go up for keywords and items that sell profitably and down where clicks bring no orders. Budget shifts to the campaigns with the best contribution margin. In parallel, we expand your OTTO assortment with suitable items and remove those that do not make money after all costs.
Reporting and Strategy
Every week you receive the report with TACoS, contribution margin and growth per item. Once a quarter we review the strategy with your team: assortment, prices, budget and OTTO's role next to Amazon. In between, you clarify questions directly on Slack with the people who run your account, with no detour through a ticket system.
OTTO vs. Amazon
Why OTTO works as a growth lever in 2026
OTTO works as a growth lever because it has its own customer base focused on Germany and fewer sellers compete for the same search terms than on Amazon. The table shows the differences that matter for planning, effort and advertising. We compare ad costs per assortment, because flat averages hide more than they reveal.
| Aspect | Amazon | OTTO |
|---|---|---|
| Seller access | Open registration via Seller Central | Application, OTTO reviews every request |
| Competition | Very many sellers per category | Far fewer sellers per category |
| Customers | International and very broad | Focused on Germany |
| Ad formats | Sponsored Products, Brands, Display and DSP | Sponsored Product Ads with keyword targeting |
| Role in the channel mix | Main channel for reach and ranking | Second channel for additional revenue |
Why TMG
What sets us apart from other OTTO agencies
Investment
Transparent models
OTTO Marketplace Management
Onboarding, listings, Sponsored Product Ads and ongoing account management on OTTO.
- OPC setup and listing audit
- Sponsored Product Ads with keyword targeting
- Weekly optimization and reporting
- Direct Slack access
Multi-Channel Full-Service
Amazon and OTTO managed together: strategy, listings, advertising and reporting from one team.
- Everything in OTTO Marketplace Management
- Amazon PPC and Amazon SEO
- Aligned prices and stock for both channels
- Quarterly strategy reviews
Custom quotes based on catalog size and goals. Fixed management fee, no percentage of ad spend.
FAQ
Frequently asked questions about OTTO Marketplace
We take on 2 new clients per quarter
We review your account for free and show you concrete levers for profitable growth. Or book an intro call with Alex directly.