To preface the ranking we want to highlight how we imagine the perfect agency setup to look like in this video
Our Evaluation Criteria
We evaluate each agency across three dimensions:
- Professionalism & Trustworthiness – How do they work? How do they communicate? How transparent are they?
- Track Record & References – What results have they achieved for which brands?
- Value for Money – What do you get for your investment?
This results in an overall score of maximum 5 points.
We've deliberately excluded performance agencies with a WhatsApp ads focus. That's a different playing field.
We know that agencies like Jakob Strehlow achieve strong results with Click-to-WhatsApp ads. Brands like waterdrop® are successfully experimenting with directing ad traffic directly into WhatsApp channels. But that's a separate topic – more on this in our WhatsApp Ads Guide.
The Eight Best WhatsApp Marketing Agencies at a Glance
This is what an optimal WhatsApp marketing setup looks like:
Before we dive into the individual agencies, here's a brief overview of how the interplay between agency, tool, and your shop ideally looks. Chatarmin's Shopify WhatsApp integration and Klaviyo integration form the technical foundation.
Felix Ehold was one of the first to take WhatsApp marketing seriously in the DACH region. His clients include wholey®, Tierseelen, and holy s*hocolate – all brands we've worked with directly through the Chatarmin Slack Connect channel.
Currently, Felix's focus is back on his main agency Ecom Offensive, which scales paid media for e-commerce clients. The retention service continues but with less capacity than before.
Pricing model: Retainer starting at approximately €1,500–€2,500 monthly plus percentage ROAS participation. This is fair as long as you can cap the participation or establish clear attribution rules – otherwise costs can explode with success.
Advantages
- Pioneer in WhatsApp marketing with lots of practical experience
- Low fixed costs through retainer model
- Short communication channels, hands-on mentality
Disadvantages
- WhatsApp and email are no longer the main focus
- Variable compensation can become expensive
- Potential conflicts of interest with short-term sales actions
Our Score: 3.5/5
Source: Ecom Retention
Rank Seven: Onlinegen (Marco Endres)
Marco Endres is what you might call a "retention craftsman." He works as a one-man agency with a small freelancer network – but directly, personally, and with a clear focus on Shopify/Klaviyo setups.
His clients include Lotuscrafts and Papasplatz – both 7- to 8-figure shops that Marco handles hands-on. He knows both hello-charles and Chatarmin from practice and can provide objective advice.
Marco travels a lot, meets clients in person, and brings experience with reviews.io, Loyaltylion, and Omnisend. For complex products and setups that need explanation, he's a good choice.
Advantages
- Direct collaboration with the founder, no intermediate layers
- Deep focus on Shopify/Klaviyo/Omnisend ecosystem
- Experience with email, WhatsApp, direct mailings, and reputation management
- Account audits starting at a few hundred euros
Disadvantages
- Very limited capacity
- Waiting list for new clients
- Can't keep up with rapid growth
Recommendation: Ideal for smaller D2C brands looking for a personal partner. If you want to work with Marco, inquire early.
Our Score: 4/5
Source: Onlinegen
Rank Six: More Conversions (Jakob Gerzen)
Jakob Gerzen and his twelve-person team are among the most established names in DACH retention marketing. The track record reads like a Who's Who of the D2C scene: Athletic Greens, Rosental, livefresh, SNOCKS.
More Conversions thinks holistically about retention – email, SMS, WhatsApp, direct mailings. The technical level is high, the results speak for themselves.
But: The agency is an exclusive partner of hello-charles and even invested there. This means no neutral tool advice. Additionally, pricing is in the premium segment – for brands under seven-figure annual revenue, it becomes difficult.
Advantages
- Excellent references with renowned D2C brands
- Holistic retention approach (email, WhatsApp, SMS, direct mail)
- Own data analytics solution (DataX)
- In-house developer capacity for custom solutions
Disadvantages
- Premium pricing, not suitable for smaller brands
- Exclusivity with hello-charles limits tool choice
- Migration to Klaviyo is required
Our Score: 4/5
Source: Jakob Gerzen
Rank Five: deineshopmails.de (Justin Burkert)
Justin Burkert positions deineshopmails.de as a "retention agency" – and lives up to it. The team serves brands like Vaditim and Elevate with a clear focus on sustainable results rather than short-term hype.
What sets Justin apart: Flexibility. Monthly cancellable contracts, no long commitments. He thinks from the customer's perspective, not his own revenue.
Advantages
- Flexible terms, no binding contracts
- Solid track record with 7- to 8-figure D2C brands
- Understands WhatsApp as part of the retention mix, not a silo
- Modern tools (Miro, Asana, Slack)
- Objective tool advice without exclusive contracts
Disadvantages
- Few new references in the last year
- Some clients wish for more formal communication
Our Score: 4/5
Source: Justin Burkert
Rank Four: amail agency
Noah Rietdorf and Anton Mörike founded amail agency in August 2025 – but both are anything but newcomers. They developed the WhatsApp service offering at several German agencies and bring considerable experience.
What makes amail special: They have established themselves as technical pioneers for complex Chatarmin setups. This means deep product know-how and close coordination with our team.
Their references speak for themselves: Sheko, embelly, and other e-commerce players rely on the "amail System" – an integration logic between email and WhatsApp via webhooks that promises maximum revenue at controlled costs.
Advantages
- Strong references like Sheko with measurable results
- Founders work in the accounts themselves – no delegation to junior staff
- Flexible service design from consulting to done-for-you
- Technically proficient, especially with complex webhook setups
- Deep integration of email and WhatsApp marketing
Disadvantages
- Focus exclusively on Klaviyo and Chatarmin
- Growing client base, but not yet the breadth of established players
Recommendation: If you use or want to use Chatarmin as a tool and are looking for a partner who knows the system inside out, amail is the first choice.
Our Score: 4/5
Source: amail agency
Rank Three: Inbox-Marketing (Florian Kaiser)
Florian Kaiser is a programmer. You can tell. Inbox-Marketing delivers technical solutions that other agencies can't – hyper-personalization, AI segmentation, deep Klaviyo integrations.
Even I was impressed by the possibilities in the first call with his team. So was Saskia Dörr (Head of CRM at Oatsome) after Florian and his team including Lasse and Joel gave her an introduction.
Inbox-Marketing reportedly serves around ten brands in WhatsApp marketing, including bedrop and RIBEME. Thanks to their experience with various WhatsApp marketing tools – from hello-charles to Zoko to Chatarmin – they can provide objective advice.
Advantages
- Technological excellence with custom solutions
- Strong references with bedrop (€163,983 in 4 days), wowtamins, mellowNOIR
- Deep integration with Klaviyo for advanced segmentation
- Experience with multiple WhatsApp tools, objective advice
Disadvantages
- Premium pricing, more suitable for established brands
- Percentage revenue share can become expensive
- Florian himself no longer operational in all accounts
Our Score: 4.5/5
Source: Florian Kaiser
Rank Two: ondevi (Tobias Pawlik)
ondevi offers three services: SEO, performance marketing, and retention marketing. Our recommendation refers exclusively to Tobias Pawlik's retention division.
Tobi has developed ondevi (Retention) into one of the leading agencies in the DACH region over the past two years. The track record is impressive: Smilodox generated over €261,000 with a single WhatsApp campaign – managed by ondevi.
Other satisfied clients include sirplus and other 8-figure D2C brands. The reputation is flawless.
What sets ondevi apart: Tobi works in the accounts himself. No delegation to juniors, no black box. Add to that fair, tiered pricing and the ability to resolve T-Mobile blocks for Klaviyo customers – a technical detail that many other agencies lack.
Advantages
- Excellent references with Smilodox, sirplus, and other 8-figure brands
- Founder works operationally in the accounts himself
- Fair, tiered pricing without hidden costs
- Top results with both email and WhatsApp
- T-Mobile "unblocking" for Klaviyo customers
Disadvantages
- No in-house development for custom solutions
- Agency is split three ways (SEO, performance, retention) – not 100% focus
Our Score: 4.5/5
Source: ondevi.de
Rank One: Mailody (Thomas Grabner)
Thomas Grabner is an authority. Not just us saying that – even the Klaviyo partner team calls him one of the most important "Product Sparring Partners" in the DACH region.
In just a few years, Thomas has built Mailody into an agency that is respected by both competitors and D2C brands. The client list reads like a best-of German e-commerce: Paul Hewitt, Reishunger, Junglück, les lunes, BRUNA the label, Frank Juice.
We also share some clients with Mailody: Miss Lashes, Tales&Tails, healthroutine. Since November 2023, Mailody has offered WhatsApp alongside email marketing – and has quickly developed into the leading retention agency in the DACH region.
What sets Mailody apart: A rational, data-driven approach to retention marketing. No hype, no empty promises. WhatsApp is thought of as part of the big picture, not as an isolated channel.
What Makes Mailody Number 1
- 100% trust in founder and team
- "Proven Klaviyo Master Elite Partner" with impressive results
- Logical, holistic retention marketing approach
- Highest professionalism in daily interactions
- Quick understanding of WhatsApp and alignment with email strategy
- T-Mobile "unblocking" for Klaviyo customers
Possible Limitations
- WhatsApp experience only since November 2023 (but has grown strongly since then)
- Clear focus on email – WhatsApp is a complement, not the core business
The collaboration between Chatarmin and Mailody is characterized by a high degree of reliability. Over 10 D2C brands are now with both partners – the ideal combination of WhatsApp tool and WhatsApp agency.
Our Score: 5/5
Source: Thomas Grabner
Specialists for Austria and Switzerland
In addition to the major DACH agencies, there are local players that may be the better choice for certain use cases.
For companies in Austria, agencies like Rittler & Co (Graz) or BüroJETZT (Vienna) can be interesting. They know local market conditions, often have shorter paths to regional decision-makers, and understand the nuances of the Austrian market.
For Switzerland, this applies even more: The Swiss Data Protection Act (DSG) has its own requirements that go beyond GDPR. If you primarily address Swiss customers, you benefit from a partner who knows these regulations inside out.
We don't have direct project experience with these local agencies – but can confirm that local expertise in compliance issues and market knowledge can bring real advantages. If you're active in AT or CH, a conversation is worthwhile.
Summary
We can recommend all the agencies mentioned – the differences lie in the details, budget, and use case.
Need an intro? Send us a WhatsApp message or send us an email, and we'll connect you with the right agency.
Want to know how Chatarmin works as a tool? Book a demo and we'll show you how to take WhatsApp marketing to the next level with the right agency.
FAQ: Frequently Asked Questions About WhatsApp Marketing Agencies
Is WhatsApp marketing still effective in 2026?
Yes, with open rates of up to 98% and click rates around 20%, WhatsApp significantly outperforms traditional channels like email in terms of performance.
What does a WhatsApp marketing agency cost?
Costs vary widely: entry-level packages often start at €1,500 per month, while specialized enterprise agencies and performance models require significantly higher budgets.
Is WhatsApp Business GDPR compliant?
Using the standard app is often problematic, but through the WhatsApp Business API (Platform) and providers like Chatarmin, use is 100% GDPR compliant (servers in the EU).
What's the difference between a chatbot and an AI Sales Agent?
A classic chatbot follows rigid rules, while an AI Sales Agent understands context thanks to generative AI, actively recommends products, and advises customers individually.
Can I connect WhatsApp with Shopify or Klaviyo?
Yes, professional software solutions like Chatarmin offer native integrations to Shopify and Klaviyo to synchronize data and trigger automations.
Are service messages on WhatsApp free?
Yes, since Meta's pricing change, service responses (user-initiated) that occur within 24 hours are generally free.
What are "Free Entry Points" on WhatsApp?
When a customer starts a chat via a Facebook/Instagram ad (Click-to-WhatsApp), a 72-hour window opens in which messages are free for the business.
Do I need my own WhatsApp number for marketing?
Yes, to use the WhatsApp Business API (e.g., via Chatarmin), a dedicated phone number is required that is not linked to a private WhatsApp account.
What does the "Green Tick" (Official Business Account) provide?
The green tick verifies the authenticity of the business, builds trust with customers, and reduces the risk of being marked as spam.
Why should I hire an agency for WhatsApp marketing?
Agencies know the technical pitfalls of the API, optimize costs through intelligent routing (waterfall strategy), and create high-converting campaign flows.
