Email Marketing Agency for eCommerce Brands Globally
Most eCommerce brands sit on an email list that earns a fraction of what it should. We build the Klaviyo flows, campaigns and segmentation that turn subscribers into repeat customers, without discounting your margin away.
Trusted by eCommerce brands everywhere
What our email marketing service actually delivers
Here’s a look at what we’ve achieved for Dog Health through email marketing over the last 12 months, and the results speak for themselves.
Of total revenue from email
Average open rate
Revenue from automations
Typical time to launch
Your email list is your cheapest source of revenue. It's also the most neglected channel in your business.
You've spent years and a serious paid media budget building that list. Every subscriber on it has already raised their hand. They know your brand, they've browsed your products, and a good chunk of them have already bought.
And yet, for most of the eCommerce brands we speak to, email is doing a fraction of what it should. Klaviyo is installed. A welcome flow was set up eighteen months ago. Someone sends a campaign when there's a sale on. That's it.
Meanwhile the cost of acquiring a new customer keeps climbing. Retention is now the difference between a business that scales profitably and one that buys revenue at breakeven.
You might recognise a few of these:
You have a welcome flow and an abandoned cart flow, and that's the extent of your automation.
Campaigns go to the whole list, every time, because segmenting properly is a job nobody has time for.
Every campaign leans on a discount code, because that's the only thing that reliably moves the needle.
You genuinely don't know what percentage of your revenue email is responsible for.
None of this means email is broken for your brand. It means nobody has owned it properly yet.
"Working with BAW was a bit of a breath of fresh air, really. They really understood what we wanted and what we needed"
Our email marketing services
A full-service email marketing agency for eCommerce. Strategy, build, design, copy, send and optimise. You bring the Shopify store, we handle the rest.
Strategy & Audit
We audit your list health, existing flows, deliverability and revenue split to find where the leaks are. You get a prioritised roadmap showing which flows and campaigns will move revenue first.
Klaviyo Flows & Automation
Welcome, subscription up-sells, abandoned cart, post-purchase, replenishment, winback, VIP and sunset flows. Built properly, split-tested and reviewed monthly, not set live and forgotten.
Campaigns, Design & Copy
Your promotional calendar planned, written, designed and sent: launches, seasonal pushes, Black Friday. On-brand, mobile-first templates that look like your store and render properly in every inbox.
Segmentation & Deliverability
We segment on real purchase behaviour, browsing data and predicted lifetime value, so nobody gets a blanket send. And we handle the technical side, so it lands.
A Klaviyo agency, not a generalist that dabbles
We work in Klaviyo, every day, for eCommerce brands. That focus is the point.
Klaviyo was built for eCommerce, and its integration with Shopify is the deepest on the market.
Every product view, every add-to-cart, every order and every return flows into a customer profile you can actually act on. It's the reason we recommend it to almost every store we work with.
How we run your email marketing
Audit
We go into your Klaviyo account and your Shopify data and work out what's actually happening: flow performance, list health, deliverability, revenue split, segment engagement. You get an honest read on where you are, including the parts that are working fine and don't need touching.
Strategy
We map your customer journey and build a prioritised roadmap: which flows to build first, what your campaign calendar looks like for the next quarter, and the revenue target we're working towards. You sign it off before anything gets built.
Build
Templates designed, copy written, flows built, segments configured, deliverability set up properly. Most brands see the first meaningful revenue change within four to six weeks of us starting.
Send
Campaigns go out on the agreed calendar. Flows run continuously. You get visibility of everything before it sends. Nothing goes out with your logo on it that you haven't seen.
Optimise
This is where the compounding happens. We test subject lines, creative, offers, send times and flow timing, month after month. Every test either improves performance or teaches us something about your customers.
An eCommerce email marketing agency, built around Shopify and Klaviyo
We work with eCommerce brands doing anywhere from their first £500k a year to eight figures.
What they have in common is a real product, real customers and a list that's been sitting there underused.
We're not the right fit for everyone. If you're pre-launch with no list, or you're looking for a one-off template build with no ongoing strategy, there are better options. Like our Paid ads service to help build your list up!
Industries we love working with
We work across fashion & apparel, health & beauty, food & drink, home & interiors, pet, and supplements.
Software we love working with
We primarily work on:
Shopify, Webflow and Klaviyo.
Find out what your list is really worth
A 30-minute call. We'll look at your Klaviyo account together, tell you where the biggest revenue gaps are, and you'll leave with a clear view of the opportunity, whether you work with us or not.
Email marketing agency FAQs
Straight answers to the questions we hear most often from serious eCommerce brands.
What does an email marketing agency actually do?
An email marketing agency owns your email channel end to end: strategy, list segmentation, automated flows, campaign planning, design, copywriting, deliverability and reporting. In practice, for an eCommerce brand, that means we build and manage the automations that run in the background, plan and send your promotional campaigns, and keep improving both against a revenue target. The output is an owned channel that produces revenue every month, not a tally of emails sent.
How much does an email marketing agency cost in the UK?
It comes down to scope, so we work that out before we talk numbers. The things that shape it are how many campaigns you want sending each month, which flows need building or rebuilding, whether SMS is part of the plan and how complex your product catalogue and segmentation are. A store that needs its core flows set up is a very different job from one running weekly campaigns across email and SMS. On the first call we'll look at your account and tell you what we'd tackle first and what it would involve. Anyone quoting you a fixed price before looking at your account is guessing.
Why do you recommend Klaviyo?
Because it was built for eCommerce and its Shopify integration is the deepest available. Klaviyo pulls product views, carts, orders, returns and lifetime value straight into customer profiles, which is what makes genuinely personalised segmentation possible. Other platforms can send email perfectly well. Few of them let you act on eCommerce behaviour with the same precision. We're a Klaviyo Partner, but we'll work in your existing platform if you'd rather not move.
How long before we see results?
The flows we build in the first month start producing revenue immediately, because they trigger off behaviour that's already happening on your site. Most brands see a measurable change in email-attributed revenue within four to six weeks. The bigger gains (the ones from segmentation, testing and a properly planned campaign calendar) compound over three to six months. Any agency promising a specific revenue figure before seeing your data is selling you something.
Do we need a big list for this to be worth it?
Quality matters far more than size. A list of 5,000 engaged buyers will out-earn 50,000 cold addresses every time, and a bloated unengaged list actively damages your deliverability. That said, there's a floor: if you're under a few thousand subscribers, list growth usually needs to come before flow optimisation. We'll be straight with you on the call about which side of that line you're on.
Will you work in our existing Klaviyo account?
Yes. We work inside your account, on your billing, with your data. Everything we build (flows, templates, segments) belongs to you. If we stop working together, it all stays exactly where it is. We think agencies that hold client accounts hostage deserve to lose them.
How do you stop our emails going to spam?
Deliverability is managed, not set once. We authenticate your sending domain properly (SPF, DKIM and DMARC), warm new domains gradually, keep your list clean with automated sunset policies, monitor engagement by segment, and keep pace with Gmail and Outlook's bulk sender requirements. Landing in Promotions instead of spam is a separate problem, and we work on that too. It's mostly a function of engagement and content, not technical setup.
Do you only work with eCommerce brands?
eCommerce is where we specialise and where we do our best work. That's the whole basis of our Klaviyo and Shopify expertise. We do take on B2B and service-based email programmes where there's a good fit, but if you're a B2B business looking for outbound prospecting sequences, we're probably not your agency and we'll say so early.
Read the latest thinking
Deep dives on flows, segmentation, and the craft of email revenue.
Let's talk about your email marketing
Book a 30-minute discovery call. No pitch deck, no pressure. We'll look at where your email programme is now, where the revenue is hiding, and whether we're the right agency to help you get it.