Retarget email non-openers via WhatsApp, sync segments, build WhatsApp as second CRM channel.
Quick check for decision makers
Activate email segments via WhatsApp. Build both lists in parallel.
Klaviyo segments (VIP, cart abandoners, repeat buyers) as the basis for WhatsApp campaigns. WhatsApp data flows back to Klaviyo.
From Klaviyo to Chatarmin: segments, properties (lifetime value, purchase frequency, product preferences), list membership. From Chatarmin to Klaviyo: WhatsApp opt-in status, data collected from chatflows (zip code, preferences, interests), engagement data. Bidirectional, in real time.
Email not opened? Chatarmin sends a WhatsApp automatically. 85% open rate instead of 20%.
Klaviyo webhook as trigger: when a defined condition is met (e.g., "email not opened after 3 days"), Klaviyo fires a webhook that starts a Chatarmin WhatsApp flow. Same message, different channel. 85% open rate on WhatsApp vs. ~20% on email.
Collect email addresses in WhatsApp welcome flows. Generate WhatsApp opt-ins in Klaviyo newsletters. Both lists grow, no cannibalization.
Subscribers overlap only 30 to 40 percent. WhatsApp reaches a different audience than email. In the WhatsApp welcome flow, you collect email addresses and sync them directly to Klaviyo. In Klaviyo newsletters, you add a WhatsApp CTA. Result: both lists grow in parallel.
Klaviyo is the email marketing tool most Chatarmin customers already use. 48% of all Chatarmin customers work with Klaviyo in parallel. The integration connects both systems bidirectionally: Klaviyo segments, properties and events are directly available in Chatarmin, and WhatsApp data flows back into the Klaviyo profile.
The result: you use Klaviyo's full segmentation power for your WhatsApp campaigns without manually exporting data or switching between tools.
The strongest use case of the Klaviyo-Chatarmin integration: 60 to 80% of your Klaviyo subscribers don't open your newsletter. These contacts aren't lost. They just don't read emails.
Chatarmin detects via Klaviyo webhooks when a contact hasn't opened an email after 48 hours. A WhatsApp follow-up is triggered automatically. The open rate on WhatsApp sits at 85%, so you reach a significant portion of the non-opener group. Real-world data: conversion of retargeted non-openers increases by 15 to 25% compared to no follow-up action.
This cross-channel retargeting works in reverse too: contacts who don't respond on WhatsApp can be reached via Klaviyo email. Both channels complement each other instead of cannibalizing.
A common misconception: WhatsApp and email compete with each other. The opposite is true. In the WhatsApp welcome flow, you collect email addresses and automatically sync them to Klaviyo. In Klaviyo newsletters, you place WhatsApp CTAs that generate new WhatsApp subscribers.
Both lists grow in parallel. Contacts coming in via WhatsApp automatically land in the right Klaviyo list. Contacts coming in via Klaviyo get the option to sign up for WhatsApp. No manual import, no CSV export. Everything syncs in real time.
Klaviyo identifies contacts who didn't open the newsletter. Chatarmin sends the same message via WhatsApp. 85% open rate instead of 20%.
VIP customers, cart abandoners, first-time buyers. Klaviyo segments directly as the basis for WhatsApp campaigns. No manual export.
Collect emails in WhatsApp flows, generate WhatsApp opt-ins in Klaviyo newsletters. Both lists grow. 30 to 40% overlap, no cannibalization.
Since September 2025, Klaviyo offers its own WhatsApp feature. Klaviyo users can send WhatsApp marketing messages, flows and utility messages directly from Klaviyo. The natural question: do I still need Chatarmin?
The honest answer: it depends on what you need. Klaviyo's WhatsApp feature covers basic campaigns and flows. Chatarmin is a dedicated WhatsApp marketing tool with deeper e-commerce integration. The key differences:
The best solution for most e-commerce brands: Klaviyo for email, Chatarmin for WhatsApp, and both synced. You use Klaviyo's segmentation for WhatsApp campaigns without sacrificing Chatarmin's e-commerce depth.
Klaviyo's strength is segmentation. Through the Chatarmin integration, all Klaviyo segments are directly available as audiences for WhatsApp campaigns:
All segments update in real time. A customer who just purchased automatically drops out of the cart abandoner segment and receives the post-purchase flow instead.
Disclaimer: All data conducted from over 50+ Sales Calls with DACH Ecom Owners
The Klaviyo WhatsApp integration is relevant for all e-commerce brands that already use Klaviyo for email marketing and want to add WhatsApp as a second direct channel. Three typical profiles:
11 cents per message sounds expensive. 11 cents is the official Meta fee for marketing messages in Germany, while in Austria and Switzerland it's roughly 5 cents (as of 2026). WhatsApp messages generate 2 to 3x higher revenue per recipient compared to email. If you generate 1 EUR revenue per recipient via email, WhatsApp will bring you roughly 2.50 EUR. After deducting the 11 cent Meta fee, you still have 139% higher net margin per contact than with email. That's why over 450 e-commerce brands successfully run WhatsApp marketing with Chatarmin.
Chatarmin passes Meta fees through 1:1, with no markup on the message fee. Service messages within the 24-hour window are free. The connection between Klaviyo and Chatarmin incurs no additional costs.
What leading E-Commerce brands from the DACH region say about armincx
kazaarfragrances
“An AI chatbot for all channels, the best WhatsApp marketing tool, integrated with Klaviyo, Shopify, billbee, and 8returns. At fair rates. We are happy.”
DR. VIVIEN KARL
“The setup is very simple and quick to implement. In terms of value for money, Chatarmin is the best provider for WhatsApp marketing. The Klaviyo integration is great.”
HANS Brainfood
“Easy integration with Shopify and Klaviyo, simple setup of all technical aspects. Direct customer reach with open rates over 85% and amazing ROI on WhatsApp costs. Perfect for top customers and as an exclusive sales element.”
nucao
“In terms of value for money, Chatarmin is the best we could find on the market.”
Fatbikeskopen
“I think it's a no-brainer for everyone in the e-commerce space to join Chatarmin.”
kazaarfragrances
“An AI chatbot for all channels, the best WhatsApp marketing tool, integrated with Klaviyo, Shopify, billbee, and 8returns. At fair rates. We are happy.”
DR. VIVIEN KARL
“The setup is very simple and quick to implement. In terms of value for money, Chatarmin is the best provider for WhatsApp marketing. The Klaviyo integration is great.”
HANS Brainfood
“Easy integration with Shopify and Klaviyo, simple setup of all technical aspects. Direct customer reach with open rates over 85% and amazing ROI on WhatsApp costs. Perfect for top customers and as an exclusive sales element.”
nucao
“In terms of value for money, Chatarmin is the best we could find on the market.”
Fatbikeskopen
“I think it's a no-brainer for everyone in the e-commerce space to join Chatarmin.”
Sign up for Chatarmin and verify your WhatsApp Business number.
Paste API key from Klaviyo into Chatarmin. Segments and properties sync instantly.
Set up your first cross-channel flow. Reach email non-openers via WhatsApp.
Technical setup of the Klaviyo integration takes under 15 minutes: copy the Klaviyo API key, paste it into Chatarmin, select segments, done. No developer needed.
Your dedicated, German-speaking Customer Success Manager builds the first flows together with you:
Real-world timeline: from first call to first live flow takes a few days. Full setup (all flows + campaign cadence) 2 to 3 weeks.
Chatarmin is ISO 27001 certified. All data is hosted on servers in Frankfurt, Germany. The connection to Klaviyo runs through the official Klaviyo API. WhatsApp messages are sent exclusively through the official WhatsApp Business API. A Data Processing Agreement (DPA) is available at any time.
Chatarmin and Klaviyo together form a fully EU-based marketing stack: Chatarmin hosts in Frankfurt, Klaviyo offers EU hosting as an option. Opt-in management is built directly into Chatarmin: only contacts with a valid WhatsApp opt-in receive marketing messages.
Chatarmin fits right into your existing tools.
The deepest native integration for e-commerce: abandoned cart, post-purchase and revenue attribution directly from Shopify data.
Chatarmin is one of the few WhatsApp providers with a native Omnisend integration. Sync segments, connect flows bidirectionally.
Enterprise email meets WhatsApp: use Emarsys events as flow triggers and sync campaign data bidirectionally.
Everything you need to know.
No. Chatarmin does not replace Klaviyo. WhatsApp complements email as a second direct channel. Klaviyo stays your email tool, Chatarmin becomes your WhatsApp tool. Both systems sync contacts, segments and properties automatically and bidirectionally. The combination generates more revenue than either channel alone.
Klaviyo has offered its own WhatsApp feature since September 2025. For basic campaigns and simple flows, that may be sufficient. Chatarmin offers deeper e-commerce integration: native Shopify connection with revenue attribution, abandoned cart flows with A/B testing, AI product advisor in chat and Meta fees with no markup. Most e-commerce brands get the best results with Klaviyo for email and Chatarmin for WhatsApp.
Bidirectionally. From Klaviyo to Chatarmin: contact data, segment membership, properties, events and tags. From Chatarmin to Klaviyo: WhatsApp opt-in status, collected email addresses, tags from WhatsApp flows and interaction data. The sync runs in real time, no manual export needed.
The connection between Klaviyo and Chatarmin incurs no additional costs. Meta charges 11 cents per marketing message in Germany and roughly 5 cents in Austria and Switzerland (as of 2026). Service messages within 24 hours are free. Chatarmin passes Meta fees through 1:1, with no markup on the message fee.
No, the opposite is true. WhatsApp reaches a different audience: younger, more mobile contacts who open emails less frequently. Through bidirectional sync, both lists grow in parallel without overlap. The strongest proof: the cross-channel retargeting flow follows up on email non-openers via WhatsApp and increases conversion by 15 to 25%.
Yes. Chatarmin is ISO 27001 certified and hosts all data on servers in Frankfurt, Germany. The connection to Klaviyo runs through the official Klaviyo API. Chatarmin and Klaviyo (with EU hosting option) form a fully EU-based marketing stack. A Data Processing Agreement (DPA) is available at any time.
Get started now and connect Klaviyo with WhatsApp via Chatarmin.