Disclaimer: this blog was written in collaboration with Melusine Studio. No compensation was exchanged for this collaboration.
For ecommerce and direct-to-consumer brands, picking a marketing automation platform has real consequences. Acquisition costs are rising. Third-party cookies are disappearing. GDPR has made first-party customer relationships the only kind worth building. And the gap between brands that respond to real customer behaviour in real time and those still sending the same weekly email to their entire list is getting bigger every year.
The problem is that "marketing automation platform" covers a lot of ground. Vendors use it to describe everything from a basic email sequence builder to full customer data infrastructure with AI-driven orchestration across every channel. A platform that works brilliantly for a B2B company with long sales cycles looks completely different from what a B2C brand needs to drive repeat purchase, manage lifetime value, and protect margins in a competitive market.
I'm Mélusine Knight, Director at Melusine Studio. We work with ecommerce and direct-to-consumer brands across the UK and Europe — helping them choose, implement, and get more from their marketing stack. Below, I'll walk through the criteria I use when recommending platforms, then share my honest picks for 2026: what each one does well, where it has limits, and who it suits best.
How to choose a marketing automation platform
A long features list tells you very little. Here's what actually matters.
1. Does it fit how your customers buy?
The first thing I look at is whether a platform fits the logic of the business. A B2C brand needs to react to customer behaviour in real time — purchases, browsing sessions, cart activity, loyalty status, churn signals, subscription events. A B2B business might care more about CRM alignment and sales handoff. A platform can tick every box on the feature checklist and still be the wrong tool if it isn't built around how your customers actually buy.
2. Look beyond the trigger to the full journey
There's a real difference between being able to send a triggered email and building a customer journey that responds intelligently to what someone actually does. When I'm evaluating automation depth, I look for event-based triggers, branching logic, time windows, channel preference signals, segmentation, testing, and the ability to change what comes next based on real behaviour. If the demo shows one trigger going to one email, that's telling you something.
3. Data infrastructure and integrations
No marketing automation platform works in isolation — otherwise, what's the point? It needs to connect cleanly with your CRM, customer service tools, loyalty platform, subscription app, and reporting stack. I want to know how reliable the data sync is, how flexible the API is, and whether the platform can support your wider operating system rather than just sit alongside it. Platforms that restrict data access tend to create technical debt you'll be untangling for years.
4. Usability versus depth
This one's underrated. You and your team need to be able to build, test, and optimise without needing a developer every time. But the platform also needs enough technical depth to handle more advanced use cases as the business grows. The best platforms do both. The worst make you choose.
5. Reporting, scalability, and governance
A good platform shows you what's driving revenue, what's underperforming, and how customer behaviour is changing over time. It should also stay manageable as your contact list grows, your channel mix expands, and your automation logic gets more complex. If you can't understand attribution now, it won't get easier later.
The best marketing automation platforms for B2C brands in 2026
These are my picks based on hands-on experience and the brands I work with. I've focused on platforms I'd actually recommend for B2C and ecommerce use cases — there are plenty of tools I haven't included here because they're built for a different kind of business.
Klaviyo: best for B2C brands that want to grow
Klaviyo is the autonomous B2C CRM, purpose-built for B2C commerce, bringing real-time customer data, segmentation, email, SMS, mobile push, and automation into one platform. For retention and lifecycle marketing, it's the strongest option I've worked with.
The biggest strength is how actionable the data is. Automated flows can be triggered by behavioural and transactional events, webhooks can pass data to external systems, and a flexible API gives more technical teams room to build around the platform. Klaviyo processes over 2 billion daily events across 196,000+ global brands — including UK brands like Simba Sleep, which switched to Klaviyo and drove a 57% increase in repeat purchases, and Castore, which uses Klaviyo data and AI to scale customer journeys at pace. For brands managing GDPR compliance, multi-market campaigns, and first-party data strategy, that kind of data infrastructure matters.
More recently, Klaviyo has invested heavily in AI. Composer plans and runs campaigns autonomously. Customer Agent handles support conversations, recommends products, and resolves order queries 24/7. Both agents share the same unified customer profile, which means intelligence built from one interaction informs every other. Brands using Klaviyo's AI-driven flows and segmentation see an average 46x ROI.
The caveat — and it's worth saying plainly — is that Klaviyo rewards a clean setup. Your event structure, naming conventions, and segmentation logic matter. The platform gives you a lot of capability; how you configure it going in will shape what you can do with it later.
Best for: DTC and ecommerce brands that want a single platform for data, automation, and channels — and have the operational maturity to use it well.
Braze: best for mobile-first and app-led businesses
Braze is very strong for sophisticated cross-channel lifecycle marketing, particularly where app behaviour: push notifications, in-app messages, real-time engagement — is central to the customer experience. If your business lives on mobile, Braze gives you the depth to build genuinely nuanced journeys around app activity.
That said, it's more technically demanding and more expensive to run well than most ecommerce brands need. For a mid-market retailer without a strong app component, it can be more platform than the business actually requires. Implementation is serious work, and the resource overhead tends to be ongoing.
Best for: Mobile-first businesses, consumer apps, and brands where in-app engagement is a primary channel.
HubSpot: best for CRM-led or mixed B2B/B2C teams
If your marketing automation needs to sit close to sales activity: forms, landing pages, lead scoring, CRM data — HubSpot makes a lot of sense. It's approachable, well-documented, and useful for teams that want marketing and sales working from the same system.
For pure B2C retention, I wouldn't reach for it first. It's less specialised around product events and purchase behaviour, and the automation logic doesn't go as deep as platforms built specifically for commerce. But if you're running a business with a genuine mix of B2B and B2C, or if sales alignment matters more than ecommerce depth, it's a strong option.
Best for: CRM-led businesses, mixed B2B/B2C teams, and brands where marketing and sales alignment is more important than commerce-specific automation.
Salesforce Marketing Cloud: best for large enterprises already on Salesforce
Salesforce Marketing Cloud has serious journey design, governance, and data management capabilities and can support complex organisations with large teams and layered permissions. For businesses already deeply embedded in the Salesforce ecosystem, keeping everything on one architecture has real operational logic.
The trade-off is complexity — and it's significant. Implementation typically requires specialist support. Ongoing administration usually demands certified partners or additional Data Cloud licences. The platform was built through a series of acquisitions, and the resulting architecture means teams without strong technical resources tend to struggle. Total cost of ownership is frequently higher than it appears at the point of signing.
Best for: Large enterprises with existing Salesforce infrastructure, in-house technical resources, and complex multi-team requirements.
Omnisend: best for simpler ecommerce requirements
Omnisend is a practical option for smaller or mid-market ecommerce brands that want email, SMS, forms, and automation without the weight of a more enterprise-grade system. It's relatively straightforward to set up and works well for simpler lifecycle requirements.
The limitation is extensibility. Once you need deeper event architecture, tighter integration with a broader tech stack, or more granular segmentation, the platform starts to show its ceiling. Brands I've worked with who start here often find themselves ready to move on sooner than they expected.
Best for: Smaller ecommerce brands with straightforward automation needs and limited technical resource.
Mailchimp: best entry point for new or very small businesses
A lot of clients start here, and it's easy to understand why. Mailchimp is familiar, accessible, and quick to get a basic email programme off the ground. For newsletters and simple automations at small scale, it does the job.
The problem is that growing B2C brands outgrow it faster than they expect. Segmentation is limited. Reporting is basic. Event-level data retention varies significantly by plan. Brands that need to personalise by product, build journeys around purchase behaviour, or connect to a wider tech stack will hit the ceiling quickly.
Best for: Very early-stage businesses and teams that need to get started before they're ready for something more capable.
How to compare these platforms for your business
Check out this comparison table:
If you are... | Consider... |
|---|---|
A B2C brand focused on retention and growth | Klaviyo |
A mobile-first or app-led consumer business | Braze |
A CRM-led team with B2B/B2C sales alignment needs | HubSpot Marketing Hub |
A large enterprise already invested in Salesforce | Salesforce Marketing Cloud |
A smaller brand wanting a simpler starting point | Omnisend |
Just getting started with email marketing | Mailchimp |
Frequently asked questions
Marketing automation platform buying checklist: use this before you sign
- Data access: Can marketing teams build segments without a sales qualified lead? Can you see segment size instantly?
- Identity: Does the platform resolve identities across devices/channels?
- Attribution and reporting: Are windows configurable and close to industry norms? Can non-technical teammates self-serve answers in minutes? Does the attribution support more advanced use cases, like multi-touch, omnichannel attribution?
- Omnichannel: Can you coordinate email, text messaging, WhatsApp, and push on one canvas, with shared reporting and channel affinity?
- Ecommerce depth (if relevant): Does the marketing platform offer pre-built flows like back-in-stock and low inventory, product feeds, SKU-level segmentation, and return/subscription signals?
- Total cost of ownership: What are the costs, including licensing plus add-ons, data/credit overages, implementation, and ongoing developer/agency time?
- Time to first value: How long from contract to first automated revenue?
Build smarter marketing automation with Klaviyo, the B2C CRM.
Get startedFrequently asked questions
Is Klaviyo only for large ecommerce brands?
No. Klaviyo is built to grow with you — from early-stage DTC brands to complex multi-market retailers. Many businesses start simple and build from there. You won't outgrow it.
Do these platforms work with GDPR?
All of the platforms listed here support GDPR compliance, but the level of built-in tooling varies significantly. The key things to look for are: granular consent management, the ability to log and audit opt-in records, clean tools for handling data subject access and deletion requests, and how well the platform can suppress contacts who haven't provided valid consent. For brands operating across the UK and EU, this isn't a nice-to-have — it's a requirement.
Klaviyo has invested specifically in this area. Signup forms include geo-targeting to show different consent flows to UK and EU visitors, every submission is logged with a timestamp and consent version, and there are built-in tools to export or delete individual profiles with a preserved audit trail. Klaviyo is also certified under the EU-U.S. Data Privacy Framework and the UK Extension, and Standard Contractual Clauses are included in the Data Protection Addendum — both recognised transfer mechanisms under GDPR.
What should I look for when migrating from Mailchimp or a legacy system?
Focus on data portability first. How cleanly can your existing segments, event history, and contact records move across? Then look at what you'll lose in the transition and how long the rebuild will take. Platforms like Klaviyo have documented migration paths from both Mailchimp and Salesforce Marketing Cloud, and migration support is often available.
Do I need a developer to get started?
It depends on the platform. Klaviyo, HubSpot, and Omnisend are all built to be marketer-operated — you can set up automations, build integrations, and run campaigns without engineering involvement. Salesforce Marketing Cloud and Braze tend to require more technical resource for implementation and ongoing management.
Which platform is best for brands selling across multiple markets?
This is a question I get asked more than any other by clients operating across the UK, Ireland, and northern Europe. The key things to check are: native multi-language support, the ability to manage consent separately across different regional requirements, and whether the platform can support separate sending infrastructure per market.
Klaviyo handles this well in practice. Geo-targeted forms let you apply different consent flows by region, segmentation by consent status and location makes it straightforward to suppress contacts correctly across markets, and the EU-U.S. Data Privacy Framework certification and SCCs in the DPA provide a lawful basis for processing EU and UK personal data in the US. For brands managing cross-border compliance, that combination of operational tooling and legal framework matters.
In summary
The right marketing automation platform isn't the one with the most features or the biggest name. It's the one that fits how your business works, connects to the tools you rely on, and gives your team — not just your developers — the ability to build, test, and optimise.
For most B2C brands, the question usually comes down to whether you need a platform built specifically for commerce or something more general-purpose. If retention, personalisation, and lifetime value are your priorities, that answer tends to point in one direction.
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