Who is behind this
A human. Not a ticket system.
In 2026, founder Pascal Fantou personally reads and answers every email — from first contact to your first sends.
Pascal Fantou · Founder · Q4 Reach Labs GmbH, Munich
More about us →What often gets overlooked: the real value of regulars. In three stores using extra carts, the 10 to 24% of customers who buy again bring 20 to 58% of revenue. We are happy to show you how much potential your store has, based on your orders. And if you don’t have time to do it yourself: we do just this. We grow your revenue from existing customers on a commission-only basis. We keep improving it, and you don’t have to set anything up. Commission applies only to the extra orders we demonstrably bring, never to your total revenue.
Calculated from your own orders only.
You may already have flows, newsletters or a recommendation tool. Once set up, they keep running. Do you know whether they still work well? And do your customers get offered exactly what they’re still missing, at the right moment?
It's all in your Shopify admin; you don't need to send us any of it.
In Shopify you can see how many of your customers have ordered only once so far. Each of them is an open follow-up purchase.
From about that volume, extra carts can see what is frequently bought together in your store. With fewer orders, extra carts finds a fitting recommendation less often.
Then there are product pairs worth recommending. If you mainly sell a single product, or only resellers buy in larger quantities from you, the purchasing patterns we need are not there yet.
Not a problem. Keep what works well; extra carts runs alongside it. We believe our approach does better over time: it compares variants anonymously across all connected stores and earns only on extra orders. Whether that holds for your store is your call.
If it doesn't fit yet, we'll tell you openly and explain when it's worth talking again. Not included for now: stores outside Germany.
You don't buy software you have to set up and keep re-tuning. You hand over a job: your customers should buy from you again without you paying for them again through ads or marketplaces. You don't pay for emails being sent, only for the extra order. That's why we keep improving what we send: it's the only way we both earn more. Today by email after the purchase; more places follow on the same terms.
A short, plain message, like a quick note from your team: one product, no banners, no countdown. Written by people who have done this for merchants for decades, not by an AI, and checked for language and legal compliance. This is how the emails would look for the store “Example-ABC”:
Proven templates, continuously refined — no builder kit and no mass blasts. The first email goes straight to you, before anything is sent to your customers.
More on the emails →An example month: 20 extra orders at an average of €43 add €860 in extra revenue. We charge 6% of that, so €51.60. You keep €808.40.
A new approach deserves an explanation first. There is no commitment, and you decide at every step whether to go on.
You install extra carts on the Free plan, with read-only access. From your past orders, Pascal works out how many of your customers buy again, what share of revenue they bring, and what the email after the purchase can reach. Until you release the first batch, no email goes to your customers.
You pick a time and go through the analysis together; the call is free and non-binding. Prefer to talk before you install? Then book the call first. Prefer writing? One email with your store URL is enough; Pascal replies by the next business day.
If it fits, you release the first batch. After a week you get the first results review: what was sent, what it earned, what it would have cost. You choose between Free and Fair yourself; there is no automatic upgrade. If it doesn't fit, you uninstall, and your store data is deleted.
We take care of our customers the way we take care of yours: personally. That is why we guide every new store ourselves, from installation to the first results review. The first call is non-binding: have the approach explained, then decide for yourself. No newsletter, and we never pass your address on.
try it free · no subscription · uninstall anytime