How feey achieved a 28.1x ROAS in their Advent Calendar Pre-Sale with WhatsApp Marketing

The Initial Situation: An ambitious goal for the most important sales phase

For feey, the Swiss expert for high-quality organic fertiliser, the run-up to Christmas is traditionally one of the highest-turnover phases of the year. Garden lovers look for sustainable gifts, and the annual advent calendar is one of the most sought-after products in their range.

The Challenge: How do you reach customers who are ready to buy directly, personally, and with measurable success – without getting lost in the Christmas advertising noise?

feey opted for a bold step: A WhatsApp campaign as the central channel for the advent calendar pre-sale. The expectation was clear – high open rates, direct customer communication, and a return on investment that surpasses classic email campaigns.

The Strategy: Direct Dialogue instead of Broadcasting

Together with chatarmin.com, feey developed a WhatsApp campaign based on three pillars:

1. Precise Timing and Exclusive Approach The pre-sale was deliberately communicated via WhatsApp – a channel that customers perceive as personal and valuable. The message was clear: "You are among the first to get access."

2. Maximum Relevance through Segmentation Not every contact received the same message. feey used chatarmin's segmentation features to target existing customers specifically – people who already trusted the brand and were more likely to convert.

3. Clear Call-to-Action with Urgency The campaign combined an emotional appeal with rational purchasing arguments: limited quantity, exclusive pre-sale access, and a direct link to the checkout.

chatarmin ensured that all messages were sent in a GDPR-compliant manner, that deliverability was guaranteed, and that tracking worked smoothly.

The Results: Numbers that speak for themselves

The WhatsApp campaign exceeded all expectations – by a significant margin:

• 28.1x Return on WhatsApp Spend For every Swiss Franc (CHF) invested in WhatsApp Marketing, feey generated 28.10 CHF in turnover. An ROI that makes even experienced performance marketers take notice.

• 14,919.32 CHF Turnover at 531.00 CHF Cost With a minimal budget, feey achieved a five-figure turnover – exclusively via WhatsApp. The campaign not only paid for itself but became the most profitable single measure in the pre-sale.

• 81.2% Open Rate While e-commerce email campaigns achieve average open rates of 15-25%, feey reached more than four-fifths of all recipients via WhatsApp. The message wasn't just delivered – it was read.

• 15.9% Click Rate Almost one in six recipients clicked the link in the WhatsApp chat. A click-through rate that shows: WhatsApp is not a broadcast channel, but a dialogue medium with real purchasing intent.

• 160.42 CHF Average Order Value The customers who bought via WhatsApp were not only numerous – they also spent an above-average amount. A sign of the target group's quality and the effectiveness of the approach.

• 1.47 CHF Revenue per Recipient Even when considering all messages sent, each individual contact generated almost 1.50 CHF in turnover on average. A metric that impressively demonstrates the channel's efficiency.

Why WhatsApp? The Psychology Behind the Success

Email is overcrowded. Social Media is loud. WhatsApp is personal.

People open WhatsApp messages like messages from friends – not like advertising. This psychological proximity makes all the difference:

• Immediate Visibility: No overcrowded inboxes. No spam folders.
• Mobile-First: 98% of WhatsApp messages are read on smartphones – exactly where purchasing decisions are made.
• Trust through Opt-In: Anyone who shares their number signals interest. This dramatically increases the conversion probability.

chatarmin made it easy for feey to leverage this potential – without technical hurdles, without compliance risks, without complex integration.

The Role of chatarmin: Technology that Works

Behind every successful WhatsApp marketing case is a platform that masters three things: Reliability, Compliance, and Performance.

Intuitive Campaign Creation

feey was able to set up the entire campaign in just a few minutes – no IT resources, no developers, no waiting time.

GDPR-Compliant Implementation

In the DACH region (Germany, Austria, Switzerland), data protection is not a nice-to-have. chatarmin ensured that every message was sent in a legally sound manner – with documented opt-ins and transparent opt-out options.

Real-time Analysis and Optimisation

feey could see in real-time how many messages were opened, clicked, and converted. This transparency allowed for quick adjustments and maximised the ROI.

Scalability without Loss of Quality

Whether 100 or 10,000 recipients – chatarmin guarantees high delivery rates and stable performance. feey could concentrate on the strategy while the technology worked in the background.

Learnings: What other brands can learn from feey

This case is no accident. It is the result of smart planning and a bold choice of channel. Three key takeaways:

1. WhatsApp beats email – when used correctly The numbers speak for themselves. WhatsApp is not a replacement for email, but it is a superior channel for time-sensitive, highly relevant offers.

2. Less is more – if the target group is right feey did not send to hundreds of thousands. They spoke specifically to their community. Quality over quantity.

3. The right technology is crucial Without chatarmin, this campaign would have taken weeks of preparation – or it would have failed. With chatarmin, it was live and profitable in days.

Conclusion: WhatsApp Marketing as a Growth Lever

feey proved that WhatsApp is not just a customer service channel, but a highly profitable sales channel – when used correctly.

A 28.1x ROAS is not luck. It is the result of strategic thinking, a bold channel choice, and the right technology.

chatarmin makes WhatsApp marketing measurable, scalable, and profitable for Swiss and European e-commerce brands.

Ready for your own WhatsApp Success Story?

About chatarmin.com

chatarmin is the leading WhatsApp marketing platform for e-commerce companies in the DACH region. With a focus on GDPR compliance, performance, and user experience, chatarmin enables brands to use WhatsApp as a profitable sales channel – without technical complexity.