What WhatsApp Marketing costs. And what it delivers.
The math that 450+ e-commerce brands across Europe have already done. Here are the real numbers: what Meta gets, what you get back, and why the channel pays for itself from the very first campaign.
Every month without WhatsApp costs you retention revenue.
The most expensive decision you can make is waiting another quarter to launch.
What you spend today
You're already investing in Meta Ads, email tools and CRM, but email open rates are at 20% and keep dropping, CAC is rising, and every campaign that lands in the spam folder is money you've already spent.
What WhatsApp delivers
WhatsApp delivers an 85–95% open rate, a 3–10x higher conversion rate than email, and an opt-out rate below 0.2%, because customers experience the channel as personal and relevant.
The real question
...how much revenue are you leaving on the table right now because your existing customers simply overlook your messages on other channels, and you're not reaching them where they actually read?
The most common cost concerns. And the facts behind them.
From over 2,000 conversations with e-commerce brands, we know exactly which questions come up.
"11 cents per message sounds expensive."
As of 2026, 11 cents is the official Meta fee for marketing messages in Germany; in Austria and Switzerland it's around 5 cents. WhatsApp messages generate 2–3x higher revenue per recipient than emails. If you're generating €1 revenue per recipient via email, you'll land at around €2.50 via WhatsApp. Subtract the 11-cent Meta fee, and you still have 139% higher net margin per contact than via email. That's why 450+ e-commerce brands are successfully running WhatsApp Marketing with us.
"Does it make sense for our average order value?"
WhatsApp works particularly well for lower AOVs, because lower-priced impulse buys convert especially well on this channel. Revenue per recipient on WhatsApp is 2–3x that of email, and for lower order values this multiplier is often even higher.
"WhatsApp + Email = double channel costs?"
WhatsApp doesn't replace email. It reaches the contacts who never open your emails in the first place. So you're paying for reach you'd already written off: subscribers who've gone dormant on your email list. At the same time, you unlock new segments that wouldn't have signed up via email but happily will via WhatsApp.
What WhatsApp Marketing delivers
The numbers that make WhatsApp Marketing your strongest retention channel.
15x ROI
For every euro you invest in WhatsApp, you get an average of €15 back.
80–90% Open Rate
Our customers add an average of 10% in revenue from their existing customer base with WhatsApp Marketing.
+10% Revenue
Our customers generate an average of 10% additional revenue from existing customers with WhatsApp Marketing.
The results speak for themselves
Europe's smartest e-commerce brands run on Chatarmin.
>90% open rate
MARC O'POLO collected over 15,000 WhatsApp subscribers in just a few weeks, with an open rate above 90%.
€163,983 in revenue
bedrop launched the '4 Days 4 Goodies' campaign and generated €163,983 in WhatsApp revenue in 4 days.
19.3x return
waterdrop® promoted their new apple-flavoured Microdrink via WhatsApp and hit a 19.3x ROAS with nearly 19,000 recipients.
€157,119 in revenue from a single flow
Luxusbetten24 launched their welcome flow and generated over €150,000 in revenue within a few months, with just €42 in WhatsApp costs. Returns at this scale are a WhatsApp thing.
€112,000 in revenue, €2,300 in costs, 47.9x return.
Cusbclo generated over €112k in revenue with a single welcome flow. 74.1% click rate with an AOV of €117. No discount codes needed.
€135k in revenue and 29k new subscribers
Tales & Tails started with zero WhatsApp contacts. The welcome flow delivered a 172x return on WhatsApp spend and €11.69 revenue per signup.
The most frequently asked questions
Straight answers. From over 2,000 conversations with e-commerce brands.
Marketing message in Germany: approx. 11 cents. Austria/Switzerland: approx. 5 cents. Utility messages (e.g. shipping update): approx. 5 cents. Service messages initiated by the customer: free. Everything within the 24-hour window: free. These are Meta fees that Chatarmin passes on at cost. As of 2026.
Within 24 hours of the last message: free. You can exchange as many messages as you want within this window.
Yes. The software license is fixed. The variable Meta costs depend on the number of your campaigns and recipients. You decide how many messages you send and can calculate the costs per campaign in advance.
Yes. Chatarmin uses the official Meta Business API. Servers in Frankfurt. ISO 27001 certified. A separate channel-specific double opt-in is mandatory and integrated into the onboarding process.
Setup takes a few days, done for you by our CSM. First campaign results from the very first send. Opt-in growth: typically thousands of subscribers within a few months.
WhatsApp Marketing at a glance
From newsletters to flows to GDPR compliance. Everything you need to know before you start.
You're in good company.
Over 450 e-commerce brands trust Chatarmin.
Let's run the numbers for you.
30 minutes. Your numbers. An honest answer on whether WhatsApp makes sense for your shop.