How ONNI® Products GmbH Achieved a 30.1X ROWAS with WhatsApp During Black Week

Initial Situation

ONNI® Products GmbH, a German company known for premium lifestyle and consumer products, planned a special campaign for Black Week. The goal: maximize revenue and leverage WhatsApp as a direct conversion channel – without relying on expensive ads or crowded email inboxes.

Solution: Black Week Campaign with Chatarmin 🖤

With Chatarmin, ONNI® executed a WhatsApp campaign built on relevance, personalization, and cost efficiency:

• Shopify integration for precise product recommendations and automated tracking.
• High reach and engagement thanks to WhatsApp messages with outstanding open rates.
• Efficiency: no markup on Meta costs and full transparency on ROI.

Results

The Black Week campaign exceeded all expectations:

• €10,527.99 revenue via WhatsApp 💰
• €349.86 WhatsApp costs
• 30.1X ROWAS 🚀
• 72.2% open rate 📬
• €104.24 AOV 📦
• €3.21 revenue per recipient 👥

Conclusion

The ONNI® Black Week campaign demonstrates that WhatsApp is one of the most efficient and profitable channels for sales campaigns. Thanks to Chatarmin, ONNI® achieved record-breaking revenue with minimal costs, maximum reach, and a 30.1X Return on WhatsApp Spend.

👉 Want to see how your brand can use WhatsApp as a revenue driver? Talk to our team