OLAKALA® didn’t rely on one big discount message during Black Week. Instead, the brand ran multiple targeted WhatsApp campaigns, perfectly timed along the peak shopping phase.
The result: measurable revenue, an exceptionally high ROI, and a channel that clearly performed while others were completely overcrowded.
The challenge: Black Week = peak attention overload
For most e-commerce brands, Black Week means one thing above all:
overfilled inboxes and rising ad costs.
OLAKALA® faced the challenge of standing out despite massive promotional noise, without getting dragged into endless discount battles or diluting the brand.
The solution: WhatsApp as a direct, personal sales channel – strategically orchestrated and technically scalable.
The strategy: Multiple campaigns instead of one big shot
Rather than putting everything into a single message, OLAKALA® opted for several WhatsApp campaigns throughout the entire Black Week.
The focus was on:
- clear messaging per campaign
- high relevance for subscribers
- a frictionless customer experience
chatarmin provided the technical foundation: intelligent sending logic, GDPR-compliant opt-ins, clean tracking, and stable performance – even at high sending volumes.
The results: When relevance meets reach
The numbers speak for themselves:

- €69,264.44 WhatsApp revenue
- €1,125.83 WhatsApp costs
- 61.5x return on WhatsApp spend
- €136.35 average order value
- 14.2% click rate
Why this worked
This success was no coincidence, but the result of three key factors:
1. Permission over push
Every recipient had actively opted in. No wasted reach, no annoyed users.
2. Channel-first, not copy-paste
The campaigns were written specifically for WhatsApp – short, clear, and highly relevant.
3. The right platform behind the scenes
chatarmin ensured perfect timing, deliverability, and precise tracking.
This turned WhatsApp from a communication channel into a true revenue driver.
Conclusion: Black Week can be highly profitable – with the right channel
OLAKALA® proved that WhatsApp is not just an add-on, but a strategic sales channel that truly shines during peak shopping periods.

The right partner makes all the difference
Setting up WhatsApp marketing properly is complex.
With chatarmin, it becomes a competitive advantage that directly translates into revenue.
About chatarmin.com
chatarmin is the leading WhatsApp marketing platform for e-commerce brands in the DACH region. With a strong focus on GDPR compliance, performance, and user experience, chatarmin enables brands to turn WhatsApp into a profitable sales channel – without technical complexity.

