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SHEKO, based in Hamburg, sells shakes, starter sets and supplements in ten European countries. For the launch of the Polish store in autumn 2026, we built the email marketing in Klaviyo for Poland: consent, flows, forms and a clean separation of languages.
SHEKO already had a mature Klaviyo setup for the German market: flows with proven content, their own design and test results. For the Polish launch, the relevant German flows were to be systematically localised and set up in a separate Polish structure. Existing Polish content was kept.
The brief was clear: carry over what exists, don't reinvent it. The work was in the details. Over 240 link fields pointed to German pages, discounts had to work in złoty, graphics contained German text, and for some customer profiles the language was unclear.
An honest split: what we do ourselves and what others contribute.
The email design and all graphics come from SHEKO. Our part is the transfer, the technology behind it and the checks.
Status according to the project documentation of 16 October 2026.
50 of 53 emails live since 7 and 8 October 2026. Three survey or reminder emails deliberately remain in draft.
Published on 6 and 7 October 2026.
Order and shipping confirmation requested as transactional with Klaviyo and approved. This way they also reach customers without newsletter consent.
Who gets Polish emails? The answer was less clear-cut than it sounds.
Some customer profiles had conflicting data on language, store language and country. If assigned wrongly, someone signing up in Polish would have received German emails, or both.
Only clearly Polish profiles enter the Polish flows. Conflicting profiles are blocked instead of guessed.
Fixed assignment rules, exclusion of Polish profiles from the German flows and test cases run through before launch.
Live since 7 October 2026.
| Profile | Example | Result |
|---|---|---|
| Clearly Polish | Language, store language and country match Poland | Polish flows, excluded from the German ones |
| Clearly German | All data matches Germany | German flows as before |
| Conflicting | Data does not match up | Blocked instead of guessed |
German and Polish flows had to hand over cleanly during live operation.
During the switch, nobody may slip through and nobody may receive emails twice.
A fixed order for each flow pair: first activate the Polish flow, then restrict the German one.
A documented process with a way back. We openly named a short possible overlap window instead of keeping quiet about it.
All six flow pairs switched over on 7 and 8 October 2026.
In a live test, the language switched back to German after sign-up.
New contacts would have ended up in Klaviyo with the wrong language. The cause was not in Klaviyo.
Prove the cause first, then have it fixed in a targeted way.
Found the cause in the store code and handed it over to SHEKO's IT team with precise instructions.
Fixed by the IT team, retest passed on 13 October 2026.
Not everything from the German setup made sense for the Polish launch.
The German flows contained A/B tests. With the initially small number of Polish recipients, they would not have produced a reliable result for a long time.
One fixed version per email based on the German findings, explicitly without claiming a test winner.
Fixed content versions were chosen for the launch. The German results served as a guide; new tests are possible as soon as there is enough data.
Fixed launch versions for the published Polish flows. Further drafts and the test variants kept in them are reviewed separately.
There are not yet enough open, click and revenue figures for Poland to be reliable. The channel has only been running since October 2026. We will only share figures once they are meaningful and approved by SHEKO.
Three more flows are prepared as drafts: Collagen Post Purchase, Browse Abandonment and Abandoned Cart. Before go-live, the outstanding functional checks and approval by SHEKO will follow.
We look at your Klaviyo setup and tell you what can be transferred and where the pitfalls are.
