Case Studies / sallysshop

How Sallys World achieved a 31.1x ROI with WhatsApp during Black Week

31.1x

Return on WhatsApp

83.8%

Open Rate

€150,44

Average Order Value

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Written by Johannes Mansbart

CEO & Co-Founder, chatarmin.com

Last updated at: January 15, 2026

Household

How Sallys World turned attention into revenue with WhatsApp

Black Week is the most competitive time of the year. Inboxes are overflowing, discounts look the same everywhere – and attention becomes the scarcest resource.

Sallys World faced exactly this challenge: How do you stand out during Black Week without exhausting your community with generic newsletters?
The answer: WhatsApp instead of mass. Relevance instead of noise.

Together with chatarmin, the Black Week Super Sale was launched via WhatsApp – personal, clear, and relentlessly focused on conversion.

The Strategy: Black Week directly in the WhatsApp inbox

Instead of fighting for attention in overcrowded email inboxes, Sallys World chose a direct line to its community.

The WhatsApp campaign was built around:

  • Clear offer communication (“Only today”, “While stocks last”)
  • Strong visuals directly inside the chat
  • A personal, on-brand tone of voice
  • One-click access to the shop
  • Full GDPR compliance powered by chatarmin

Execution with chatarmin

With chatarmin, WhatsApp became a scalable performance channel:

  • Segmented recipient lists instead of mass blasting
  • Reliable delivery even under high sending volumes
  • Precise tracking of revenue, clicks, and conversions
  • Seamless integration into existing shop and campaign setups

The result: maximum relevance at the decisive moment.

The Results speak for themselves

The Black Week WhatsApp campaign delivered measurable performance – no detours:

sallysshop_casestudy

  • €14,593.03 WhatsApp revenue
  • €471.16 WhatsApp costs
  • 31.1x Return on WhatsApp Spend
  • 83.8% open rate
  • €150.44 average order value
  • €3.35 revenue per recipient

A clear proof that WhatsApp doesn’t just generate reach – it drives revenue.

Why WhatsApp performed so strongly here

  • Messages get read – not saved for “later”
  • Offers arrive without algorithmic filters
  • The channel feels personal, not promotional

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The right partner makes the difference

Setting up WhatsApp marketing properly is complex.
With chatarmin, it turns into a competitive advantage that translates directly into sales.

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 revenue channel – without technical complexity.