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A weekly newsletter by Nils Koppelmann

Experimentation Tuesday.

Research, practical ideas, and useful tools for better experiments. Selected by Nils Koppelmann, every Tuesday.

What readers say

What you’ll find inside

For the questions behind your next test.

A weekly selection of research, ideas, and resources for CRO and experimentation. Read what’s useful and bring fresh thinking back to your team.

Understand your customers.
Research methods and ecommerce insights that help explain buying behaviour.
Design better experiments.
Ideas for stronger hypotheses, useful tests, and clearer priorities.
Make sense of the results.
Perspectives on measurement, practical tools, and what to do with what you learn.

Read by people at these companies, among others

01 /From the readers

In good company, every Tuesday.

André Morys

CEO, KonversionsKRAFT AG

“A huge shout-out to Nils Koppelmann who does an amazing job by compiling many great experimentation insights in his newsletter. Many insights you should not miss — so better sign up.”
“Nils has his own style. A man of a few words, he makes each one count. The sweet spot is e-com breakthroughs and research condensed into simple reads.”

Convert.com

A/B Testing Tool

“Great, engaging content. No doubt, the newsletter is a great fit for experimentation nerds out there, but also for everyone who wants to make their online growth more predictable and user-centric.”

Rokas Bernotas

CRO & Growth, Condor

“I highly recommend every CRO and experimentation practitioner to subscribe. It provides a very clear overview of new trends, resources and tools, and at the same time provides inspiration for your day-to-day work.”

Niklas Bräutigam

CRO, C&A

“An essential read for anyone committed to keeping pace in the ever-evolving world of experimentation. From the latest tools to intriguing articles, there's always a gem tucked within its pages.”

David Stepien

Site Experience, Pens.com

Your editor

Nils Koppelmann

Meet Nils

From the same curiosity that drives the client work.

Nils leads Further Labs and works with teams on CRO and experimentation. The newsletter is where he shares useful reading, ideas, and perspectives with the wider community.

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