case study

How Beluga Boutique boosts email signups & revenue with store credit

3.2%

Submit rate

~10%

Total revenue

Table of content

Beluga Boutique case study snapshot
The challenge: Looking to incentivize newsletter signups with an innovative approach
The solution: Store credit automation through Koin and Shopify Flow
Results: Subscribers' engagement that translates to sales
Why Koin worked for Beluga Boutique

Beluga Boutique case study snapshot

Challenge

Standard 10% discount approach felt too common. Needed an innovative way to incentivize newsletter signups that would differentiate from competitors

Solution

Store credit automation through Koin integrated seamlessly with Klaviyo and Shopify Flow. €10 store credit awarded instantly upon newsletter signup

Results

3.2% newsletter submit rate via Klaviyo. Nearly 10% of total revenue during campaign period attributed to newsletter signups

The challenge: Looking to incentivize newsletter signups with an innovative approach

Stack of colorful patterned books topped with a decorative ceramic mug on a neutral background

As the business gained momentum, building an engaged newsletter audience became increasingly important. The standard playbook suggested offering a percentage-off discount to new subscribers, but Célia and Jon wanted something more innovative, an approach that would stand out from what competitors were doing.

“I was looking for a way to get people to sign up for our newsletter, and the standard 10% off solution didn’t seem relevant for us.”

Célia and Jon explored Shopify’s built-in tools and browsed through numerous apps, searching for something that balanced effectiveness with innovation. Most solutions felt too generic, until Koin entered the picture.

The solution: Store credit automation through Koin and Shopify Flow

Minimalist gift packaging set with “Merci” thank-you card, branded sticker, tissue paper, and small pouch on a pastel background

Koin caught their attention for several reasons: straightforward pricing, user-friendly interface, and most importantly, the ability to reward subscribers with store credit rather than discounts. That distinction offered the fresh, innovative approach they were looking for.

The team built an automated workflow using Shopify Flow that granted €10 in store credit whenever someone joined their newsletter. What made the solution particularly powerful was how seamlessly Koin integrated with Klaviyo, the email marketing platform Beluga Boutique already relied on. This meant they could continue using Klaviyo’s sophisticated segmentation and automation features while Koin handled the store credit mechanics in the background.

“It was relatively easy to set up, and the difficulties I did have were immediately resolved by the Koin support team.”

The implementation stayed clean and simple, with no complicated configurations, no intrusive promotional overlays. The combination of Koin’s store credit system with Klaviyo’s email capabilities and Shopify Flow’s automation created a smooth, brand-appropriate experience that worked without friction.

Results: Subscribers' engagement that translates to sales

Colorful striped ceramic vases arranged on cork display blocks against a neutral background

The numbers told a clear story:

3.2% submit rate according to Klaviyo analytics
Nearly 10% of total revenue during the campaign period came directly from customers who signed up through the newsletter incentive

Beyond the raw metrics, the store credit approach accomplished something discounts couldn’t: it brought in new customers and enticed them to come back for intentional purchases while making the brand feel connected to their users' needs. People weren't just grabbing quick deals, they were returning to shop thoughtfully.

Why Koin worked for Beluga Boutique

“The app is easy to use, support is great, and it does exactly what it says it will do, without strange configuration requirements or ads.”

For a boutique built on curation and authenticity, Koin provided the rare combination of powerful functionality and brand alignment. It helped transform newsletter signups from a vanity metric into a genuine revenue driver while preserving everything that makes Beluga Boutique feel special.

Want to grow your subscriber list without discounting your brand? Store credit offers a smarter alternative to percentage-off promotions-rewarding new subscribers while encouraging them to return and shop intentionally. If you’re looking to build customer loyalty that actually drives revenue, Koin makes it simple to implement and track.

About Beluga Boutique

Célia and Jon opened Beluga Boutique in Bordeaux (fall 2023) as a neighborhood gathering spot offering meaningful, curated objects. After the physical store's success, they expanded online, bringing distinctive home decor, accessories, and stationery to customers beyond Bordeaux.

Platform: Shopify Basic

Industry: Home Deco and Gifts

Website: https://beluga-boutique.com

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-About Author

Emma C.

As the Chief Marketing Officer at KOIN app, I’m here to build a robust ecosystem by collaping with Shopify apps. Together, we can create seamless integrations that add more value to our shared customers.

KOIN helps merchants retain customers, increase repeat purchases, and drive loyalty by offering cashback and store credit rewards.

📩 Let’s connect! emma@getkoin.io

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February 11, 2026