Case Study

Stieglitz

How Stieglitz sent WhatsApp back in stock alerts at a 26,7% conversion rate

How Stieglitz sent WhatsApp back in stock alerts at a 26,7% conversion rate

How Stieglitz sent WhatsApp back in stock alerts at a 26,7% conversion rate

Amsterdam-based, fast-growing fashion brand Stieglitz was founded by Pien Stieglitz in 2014. The brand empowers women to express their femininity and strength through bold and unique fashion collections.

Key metrics

26,7%

Conversion rate

500+

WhatsApp opt-ins

€2.000+

Recovered in the first month

From dreams of acting to successful entrepreneurship

Pien Stieglitz’s story doesn’t start the way you’d expect. No high-end design schools or work experience at big fashion brands. Instead, Pien’s dream was to become an actor and shine on stage.

However, after she took a hit to her self-esteem, in part due to failing drama school, she decided to go on a long journey. The strong, proud women she met along the way inspired her to start Stieglitz. A fashion brand that empowers women to find pride in their most authentic selves. 


The loud, vibrant and enigmatic colours of Stieglitz’s collections and its outspoken vision for fashion soon led to clear and demonstrable success. Stieglitz is currently growing at a very fast pace.


Having successfully established themselves in the Dutch market, they are currently focused on branching out into the European market, for instance into Germany, where it is growing fast.


In order to facilitate their growth and scale in a future-proof way, Stieglitz recently joined hands with GoodKarma Agency as their preferred growth partner. This agency blends strategic thinking, data-driven decision-making and creative execution to help ambitious ecommerce brands scale.


Part of GoodKarma’s offering is making email marketing their clients’ most profitable channel. As such, the agency turned out to be the perfect implementation partner for setting up Stieglitz’s WhatsApp marketing campaigns, alongside their typical email marketing practices.


We spoke to Roderick Muller, Managing Director at Stieglitz, about why they started using ShopPop and what it’s brought them so far.

Stieglitz: an immensely personal fashion brand with a voice

For Stieglitz, one-on-one messaging via chat apps like Messenger and WhatsApp made a lot of sense. They were curious to find out if these channels could be a viable solution, alongside traditional email marketing. The Stieglitz audience is quite young, and active on Whatsapp, so they figured this would be the perfect place to engage them.

Muller: “One-on-one relationships with customers are extremely important to Stieglitz, since it is such a very personal brand at its core. Our founder, Pien Stieglitz, remains an integral part of the brand, day to day. Her vision is the driving force and women relate to her journey and mission. It makes sense to continue engaging the customers throughout their life cycle in a personal way to further build the brand and community.”

Testing out new channels with back in stock alerts for WhatsApp


Muller: “We decided to give ShopPop a try and started with the WhatsApp integration for back in stock notifications. We worked closely together with the GoodKarma team to set up a custom integration, meaning we now offer visitors the chance to opt in for back in stock alerts both via email and WhatsApp. Over time we might opt for one or the other, but for now we see the value in both. I believe this hybrid approach is optimal for many brands who are hesitant to make a full switch away from email.”


This hybrid approach to messaging is becoming more and more common in the extremely competitive ecommerce space, where customer experience can make all the difference. 

Instead of forcing a messaging channel onto customers, Stieglitz now gives them the option to choose where they want to be contacted. Especially for highly relevant alerts like a back in stock notification, it makes sense to give control back to the customer, and let them decide what feels right.

Email and WhatsApp now support each other for compound conversions and results

Muller believes messaging apps like WhatsApp and Messenger can form an integral part of a brand's communication strategy, but it’s not for every brand, nor for every consumer:

“The best brands will understand their customers enough to know if these channels would work for them. Other brands should just give it a try and make an educated decision based on the results.”

Instead of forcing a messaging channel onto customers, Stieglitz now gives them the option to choose where they want to be contacted. Especially for highly relevant alerts like a back in stock notification, it makes sense to give control back to the customer, and let them decide what feels right.