Every test costs a season.
Mailings need large test cells and weeks of response time. Ads burn media budget before a test reaches significance. You get a handful of real tests a year.
Reclaim Growth Lab
Build challengers that beat your best mailing or ad, and know why they win.
Your best-performing version is hard to beat, and an A/B test only tells you who won, not why. In six weeks you learn what makes your customers respond and build a challenger you have tested against a customer twin.
Founding cohort: 10 seats at half price, starting 1 March 2027.





Taught by Dr. Frank Buckler, developer of the peer-reviewed Causal AI method behind SUPRA. Guest experts: Prof. Dr. Michael Urselmann, Per Kasch, Dr. Jonathan Mall, Dirk Ziems and Thomas Barta.
Client case
Kindernothilfe asked SUPRA to rework a donation mailing to its existing donors. We measured what made donors respond, built a challenger on those drivers and tested it against the usual mailing. Conversion rose from 3.5 to 5.1 percent, the average gift from 51 to 75 euros, and total donation revenue almost doubled.
A mailing to existing customers has the same levers as a cross-sell mailing, a catalog or a CRM email: the subject line, the argument, the image and the overall feel.
The lab teaches the same steps: find what drives response, build the challenger, let the A/B test decide.
Control vs. challenger
Client case: Kindernothilfe. Published in Fundraiser Magazin.
One of the most productive labs I've ever been part of.

This lab is so to the point that it helps you get results in days.

When we need clarity grounded in causal truth before we build strategy, SUPRA is the first name I reach for.

SUPRA exposed the limits of conventional research. For high-stakes CMO decisions, they're my trusted choice.

Why most challengers lose
Mailings need large test cells and weeks of response time. Ads burn media budget before a test reaches significance. You get a handful of real tests a year.
An A/B test picks a winner. It doesn't tell you which element made the difference, so the next campaign starts from scratch again.
Fifty versions of a mailing or an ad now cost almost nothing. Picking the two that deserve a place in the test is still guesswork.
Most challengers are built from experience and taste. Few teams know which drivers make their customers respond and how much each one weighs. Most of these drivers work below conscious thought, so customers can't name them in a survey. Without that knowledge every test is a bet, and AI only produces faster versions of the same bet.
Six weeks from now
The lab
You start with why people buy and finish with your own customer twin. In between you pick the focus modules that fit your job; all four are included. One lesson a week, in the format that fits your day. For direct marketing, CRM and performance leads, the core is the module on assets that convert.
Lesson 1 · Cause · for everyone
Growth has many levers, and the biggest one is customer understanding. Most purchase decisions start below conscious thought, in needs people can't put into words, so surveys miss them. You learn why, and how SUPRA's DeepCause™ method makes these drivers visible. Then you apply it to your business with our proprietary qualitative method. We go through the cases of T-Mobile USA, Sonos and Kindernothilfe.
Focus 2 · Scale
With Dr. Jonathan Mall
The AI systems marketing can use today, from content and analysis to agents and digital twins. Then a framework to decide, task by task, what to automate, where AI supports your team and what stays in human hands. What is known can be automated. Where validated customer knowledge is missing, you need insight.
Focus 3 · Cash
With Thomas Barta
A framework that links marketing to revenue, margin, cash and risk. You frame your growth plan as an investment with expected return and risk, learn which methods prove cause and effect and which only show correlation, and put your case in front of a CFO twin that asks what a finance lead would ask.
Focus 4 · Create
With Per Kasch
What a picture, a message and a brand signal do to purchase. You learn the 2+2 Rule from SUPRA's visual impact research: two qualities that sell in every category, and two that follow your buyer's main worry. Then how to brief qualities instead of styles, and how to test visuals by their effect on purchase instead of liking or attention.
Focus 5 · Convert
With Prof. Dr. Michael Urselmann
Why people respond to a mailing, an email or a landing page, or throw it away. You find the response drivers of your audience, write challengers with the Challenger Advisor, an AI advisor trained on neuroscience research and SUPRA's findings, and see where a draft works against those drivers.
Lesson 6 · Build · for everyone
You apply the method to your own market. With a filter framework you sort the customer insights you already have. With our qualitative method you collect what your team knows about your customers but has never written down. From both you build a customer twin, a digital customer you can ask about messages, ads, offers and drafts before money is spent. Then you iterate: you test drafts of your mailing, email or ad on the twin and revise until one clearly stands out. You also learn where a twin is reliable and where a decision needs real measurement.
How the lab works
Built for full calendars
Each lesson comes in all four formats. Pick the one that fits your day. No time to prepare? Join the call anyway. Bring your question, leave with an answer.
Your material
A cross-sell or donation mailing, a catalog, a CRM email, a landing page or a conversion ad. The lab works the same way for each of them, because the drivers sit in your customers, not in the channel.
Your instructor
In 1994, as a student, Frank built neural networks to predict the stock market. They found patterns, and the patterns kept breaking. That is where he learned that correlation is not cause.
Later, in pricing projects at Simon-Kucher, he saw marketing teams with the same problem: plenty of data on what customers say, little on why they buy, and a CFO who could tell the difference. His doctoral research was his answer. It became the Causal AI method behind SUPRA, which he founded in 2014. The method is peer-reviewed and in use at many leading brands.
He is the author of The Top 5%, Think Causal Not Casual and Pricing Intelligence, and has presented six times at the ESOMAR global congress.
Guest experts





Not sure yet?
Send us one mailing, email or ad that you want to beat. You get a short written assessment of where it likely loses and how much headroom it has. No call needed.
Investment
Founding cohort · starts 1 March 2027
The first 10 participants pay 0.5k Euro instead of 1k Euro. In return they share their case with us in anonymized form, so the next cohort can learn from it.
Beyond the lab
The lab gives you the method and a first model. When your team wants measured drivers, SUPRA runs the study with you.
Being seen doesn't mean someone buys or gives.
People respond differently from how they say they will.
It shows what worked before, not why it worked.
Your lab fee counts toward the group study or the custom study if you upgrade within 90 days, and the group study counts toward the custom study. Scope and price are fixed in writing before the start.
Questions
Yes. The drivers sit in your customers, not in the channel. The lab covers mailings, catalogs, CRM emails, landing pages and conversion ads.
No. Your A/B test still decides. The lab helps you send a better challenger into it, and fewer weak ones.
Yes. All four focus modules are included. Most participants take the one that matches their job and one more, often the module on proving impact to the CFO.
The lab starts on 1 March 2027. The first 10 participants pay 0.5k Euro instead of 1k Euro. In return they agree that we may use their case in anonymized form as an example for future participants.
Usually your training or team budget. The budget request kit gives you a ready email and a one-page case to ask your manager. You get an invoice, and the fee counts toward a group study or a custom study if you upgrade within 90 days.
Everyone in the lab joins a private online group: marketing, brand, insight and CRM leads at consumer brands who prepare growth decisions for their CMO. You stay in the group after the six weeks.
What you already know about your customers: research reports, reviews, notes from sales and service, and the plan, asset or campaign you are working on. The more you bring, the sharper your first model.
About one hour a week, call included. Each lesson comes as a 25-minute video, an 8-minute read and 5 minutes of slides, and you can ask the lesson's AI assistant about your own case. No time to prepare? Join the call anyway. Bring your question, leave with an answer.
No. It is a first model that lets you test ideas and set priorities quickly. It shows you where deeper research pays off.
The AI skills run in your own AI tool. Inputs to the twins are anonymous. Your assets and plans are not shared with other participants.