Leevje saw a click-through rate of 54%, and earned €100,000 from 4,000 WhatsApp contacts – with an RPR of nearly €25.
This is a high return considering the average RPR across all charles customers is €1.88* per conversation.
Leevje also increased its WhatsApp subscriber base by almost 40% – customers it can now easily reconnect with once the Black Friday hype dies down.
One reason Leevje is so successful in WhatsApp is because it uses charles not only as a powerful marketing tool, but also as a customer service and engagement tool.
Customers are able to send questions easily and receive a quick answer. Using WhatsApp they can create a satisfying user experience along all touchpoints within the funnel and post purchase.
Then, when marketing campaigns are sent out, engagement tends to be high.
How Leevje ran the campaign
Step 1: Shut down online shop, announced presale

Closed online shop and offered a gated presale. Password was shared with WhatsApp subscribers only for 1 day – the day before the public November deal days.
Step 2: Promoted WhatsApp-only presale on socials

Promoted Conscious Shopping Days presale on social media (ads and posts) and email. Collected around 1.5k additional WhatsApp opt-ins.
Step 3: Sent presale password via WhatsApp only

Sent out campaign to around 4k contacts, revealing presale password and linking to locked website.
Future steps
2. Use social ads to grow subscriber base.
3. Optimize segmentation with A/B testing.
With this "WhatsApp as an exclusive channel" strategy, Leevje clearly communicated the benefit of joining WhatsApp to its customers – with great effect.
Leevje CEO, David Ortmeier says, "Our customers were super engaged. They waited for the start of the event and shopped instantly when the WhatsApp messages came through. These customers felt like VIP customers, as the presale was exclusively for WhatsApp subscribers.
"We're very satisfied with WhatsApp and the charles team in particular. We're happy with the tool and the many releases it has.
"A steady open rate of over 80% speaks for itself. We also receive positive feedback from their customers, and enquiries via WhatsApp are steadily increasing, which shows how important this channel is."
*€1.88 median customer RPR per month from Dec 23 to May 24 from all charles customers with enabled revenue tracking