The Measurement & Optimization OS for Retail and Ecommerce

Your attribution says ROAS is 9.0. Your incrementality test says it's 5.0. Sellforte tells you which one to run your business on.

Sellforte unifies Marketing Mix Modeling, Incrementality Testing, and Attribution into a single always-on system, delivering true incremental ROAS at the campaign and ad-set level for the world's biggest retail & ecommerce brands.
 
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Trusted by Ecommerce brands across North America & Europe

  • azzas2154
  • bonprix logo
  • Represent logo
  • Brahmin logo
  • Finnish Design Shop logo
  • FCPEuro logo
  • smarthphoto2

... And leading Retail brands

  • C&A logo
  • KIK logo
  • Lidl is using Sellfort to measure media performance, and optimize media budgets
  • Intersport is one of Sellforte's customers
  • Tchibo logo
  • Fressnapf logo
  • Douglas logo
  • musti

One single measurement system, built on three foundations

Most enterprise teams run MMM, incrementality testing, and attribution as three separate workstreams with different tools, different teams, and results that contradict each other. Sellforte is a single system with all three built in, so each layer makes the others more accurate.

1. Marketing Mix Modeling

The Causal Layer

Sellforte MMM

2. Incrementality Testing

The Calibration Layer

Sellforte Incrementality

3. Attribution Correction

The Tactical Layer

Sellforte Attribution

Always-on Causal Bayesian MMM measuring true incremental impact of every channel. It runs continuously, not quarterly. It's the causal foundation the system is built on and the baseline everything calibrates against.

Geo Lift tests, Conversion Lift studies, and A/B tests, unified in one Experiments Hub. Results feed back into the MMM as Bayesian priors, sharpening accuracy with every experiment you run.

Sellforte applies incrementality factors from MMM and experiments to correct your attribution, delivering true incremental ROAS at the campaign & ad set level, not what each channel claimed credit for.

Meet the Agents powering Sellforte AI

 

Most marketing AI tells you what happened. Sellforte AI tells you what to do next, through three agents that analyze, execute, and continuously learn.

Media Planner Agent
Sellforte Media Planner Agent

Media Planner Agent

Your super smart analyst who builds precise and hyper-granular miROAS-powered budget recommendations at the campaign & ad set level.

Media Buyer Agent
Media Buyer Agent

Media Buyer Agent

Your 24/7 media buyer who executes real-time media buying directly in Meta, Google, TikTok and more to maximize incremental sales and profit.

Experiments Agent
Experiments Agent

Experiments Agent

Your ever-curious data scientist who automatically designs, detects, and analyzes experiments to strengthen every decision you make.

Case Studies: Quantifiable & Measurable Impact

How FCP Euro Drove +26.6% Media-Driven US Sales Growth with Sellforte

 

Discover how North America's FCP Euro used Sellforte’s always-on MMM and Media Optimizer to increase sales by +26.6% and new customer growth by +21.2% with +90% forecast accuracy.

Read more
FCP Euro Case Listing Page

How Odlo Increased Marketing ROI by +21.4% with Sellforte

 

Discover how Odlo used Sellforte to quantify the effect of weather on demand, adapt media investments in real time, and achieve +21.4% higher marketing ROI.

Read more
Odlo-square-cropped

How Represent Achieved +44% more incremental revenue with Sellforte

 

Represent Clothing partnered with Sellforte to measure media impact, optimize marketing spend, and drive a 44% lift in Black Friday sales through MMM.

Read more
Screenshot 2025-08-08 at 10.07.13

How Farmacity Unlocked +$240K Incremental Revenue & +63% More Retail Impact with Sellforte MMM

 

Discover how Sellforte MMM helped Farmacity reveal hidden ROI, boosting revenue by +$240K and retail impact by +63%.

Read more
Farmacity Case Preview

Accurate media spend optimization enabled by...

Causal Marketing Mix Modeling

Reveals the true ROI for each channel and campaign by measuring their incremental sales impact.
Causal Marketing Mix Modeling

Geo Lift Testing

Used for calibrating and validating the Marketing Mix Model for increased accuracy
Geo Lift Testing

Attribution Analytics

One dashboard for MMM and Attribution. Enables comparing Last-Click and Ad Platform attribution to MMM. 
Attribution Analytics

Media metrics

Media Metrics = Impressions, Clicks, Conversions, AOV.. Used for uncovering the drivers of ROI changes.
Media metrics

Uncover the True ROI for each channel

Transition from Attribution to Incrementality

Last-Click and MTA are biased to favoring bottom-of-funnel channlels (such as branded search) and undermeasuring Paid Social. At the same time, Ad Platform attribution is inflated.

Sellforte's incrementality-based measurement reveals the true incremental revenue contribution of each channel.

 

Image illustrating incrementality

Measure the Full Funnel, not just the Last Click

Start measuring Awareness channels, such as Paid Video and Paid Social Awareness, which don't show up in click-based measurement.

Reveal the true potential of Paid Social, which can be 2x - 17x more effective than what Last-Click shows.

Evaluate level of saturation in Demand Capture channels, such as branded search or retargeting campaigns.

Illustration of the full marketing funnel

Measure all Sales Channels, not just eCommerce

Stores sales: Half of Paid Social's revenue impact can be in Store Sales. Uncover it with Sellforte.

Marketplaces: Selling on Amazon or other marketplaces? Sellforte covers those too.

eCommerce sales: Sellforte helps measuring the true contribution of each channel to eCommerce sales.

Illustration of sales channels

💡 Sellforte Research: Uncovering the True ROI of your channels

Meta logo
How to measure Meta correctly?
How to measure Meta correctly?
TikTok logo
How to Measure the True Effectiveness of TikTok?
How to Measure the True Effectiveness of TikTok?
Meta logo
Measuring Meta Part 2: Including offline impact
Measuring Meta Part 2: Including offline impact

Sellforte x C&A

How C&A, one of Europe's largest retailers, built always-on marketing measurement across 18 markets using Sellforte MMM instead of annual reports.

"Sellforte allows you to do your own custom-made analytics, to get the insights you really need and not just a standard report provided once or twice a year."
- Gina De Ryck, Head of Consumer Insights and Analytics, C&A

High Quality model built for Retail and eCommerce

1. Foundation: Causal Marketing Mix Modeling (MMM)

 

Causal MMM, leveraging Bayesian modeling and best practices in causal inference, is the foundation for our incrementality measurement. 

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Sellforte decomposes sales to base sales and media-driven sales

2. Ensuring High Quality: Model calibration

 

For radically more accurate insights, our models are calibrated with Experiments (Geo tests, Conversion Lift Tests) and Attribution data (Ad Platform, Google Analytics 4, MTA).

Read more
Sellforte's model calibration framework: Causal MMM leveraging attribution data nad Experiments

3. Built for Retail and eCommerce: Promotions, weather, seasonality..

 

We are experts in modeling non-media features affecting sales in Retail and eCommerce, such as Promotions, Weather, Seasonality, and major events like Black Friday.

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Sellforte has deep expertise in modeling non-media features affecting sales in Retail and eCommerce, such as Promotions, Weather, Seasonality

Use-cases: How to unlock +6.5% more revenue?

1. Optimize Campaigns

+2.9% revenue

Optimize campaigns with Sellforte

2. Optimize Channel mix

+1.6% revenue

Optimize channel mix with Sellforte

3. Optimize Budget pacing

+2.0% revenue

Optimize weekly spend with Sellforte

Join a growing community

Ready to see Sellforte in action?

Latest Customer news

Azzas 2154 Expands Partnership with Sellforte to Scale MMM Across Fashion Brand Portfolio
Sellforte x Azzas

Azzas 2154 Expands Partnership with Sellforte to Scale MMM Across Fashion Brand Portfolio

Mar 12, 2026 2 min read
Musti Group partners with Sellforte to measure and optimize omnichannel marketing performance
Musti Group x Sellforte - Customer Announcement

Musti Group partners with Sellforte to measure and optimize omnichannel marketing performance

Feb 24, 2026 2 min read
Bonprix partners with Sellforte to optimize full-funnel media investments across Europe
Sellforte x Bonprix

Bonprix partners with Sellforte to optimize full-funnel media investments across Europe

Feb 10, 2026 1 min read

Latest Blog posts

Introducing Sellforte Experiments Hub: Run Experiments, Get Clearer Results, and Make Your MMM More Accurate Over Time
Product Updates

Introducing Sellforte Experiments Hub: Run Experiments, Get Clearer Results, and Make Your MMM More Accurate Over Time

Apr 8, 2026 6 min read
Agentic MMM in Action: The World’s First End-to-End Workflow for Ecommerce and Retail
Agentic MMM in Action: The World's First End-to-End Workflow for Ecommerce and Retail
Marketing Mix Modeling

Agentic MMM in Action: The World’s First End-to-End Workflow for Ecommerce and Retail

Mar 31, 2026 4 min read
Introducing Sellforte Activate: Apply Your MMM Recommendations Directly to Your Ad Platforms — Without Leaving Sellforte
Product Updates

Introducing Sellforte Activate: Apply Your MMM Recommendations Directly to Your Ad Platforms — Without Leaving Sellforte

Mar 25, 2026 5 min read
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