Hampden
From $2.3million to $12million at 10x ROAS using Google, Meta & Pinterest.
The Klaviyo email marketing agency ecommerce brands trust to turn a quiet subscriber list into a consistent, profitable revenue channel.
Most ecommerce brands are sitting on a customer database that could be generating far more revenue than it currently is. Generic campaigns, a handful of basic automations, and no real segmentation leave lifetime value and repeat purchases on the table every single month.
As a Klaviyo-focused email marketing agency for ecommerce brands, we turn underused email and SMS channels into a predictable revenue engine, combining automation, segmentation, and lifecycle strategy to build systems that drive consistent, profitable growth.
For ecommerce brands with an active Klaviyo account and 5k+ subscribers.
100% ROAS Growth — Helping eCommerce brands consistently multiply returns across paid and owned channels, including Klaviyo-powered email and SMS systems.
4.8/5 Client Rating — Our clients rate us highly for performance, communication, and consistent delivery across every channel we manage, email included.
$500M+ Revenue Generated — We've managed and optimised high-scale marketing budgets and revenue systems across multiple industries, trusted by fast-growing eCommerce brands for acquisition and retention.
Real written reviews — from the founders who make us the email marketing agency London ecommerce brands recommend.
“We were spending heavily on Meta but struggling with efficiency. Rozee Digital helped us rebuild the account so we could scale confidently. Our Meta ROAS increased from 1.5x to 3x while spending six figures per month, without the usual instability.”
“We were already doing around $300k/month, but scaling always came with volatility. Rozee Digital helped us break through to $1M+ in monthly revenue in just 70 days while actually improving ROAS, not sacrificing it. The biggest difference was how disciplined they were around scaling decisions.”
“We’d worked with agencies before, but this was different. Both Google and Meta ROAS improved while ad spend scaled, and decisions were clearly made with the business in mind — not just the ad account. Easily the best agency experience we’ve had.”
“I love working with Tom. He’s hands-on, always available to talk through ideas, and genuinely invested in our growth. It feels very personal, not like working with a typical agency.”
“Tom helped us grow over 100% in 2025 versus 2024, leading our paid ads, creative strategy, and email marketing. His strategic input and execution made a real impact on the business.”
“Tom helped us grow more than 200% in 2025. We’ve loved working with him — strategic, proactive, and results-driven.”
“Tom helped me increase ROAS, improve profitability, and grow the business by over 100% in 2025. His strategic approach made a real difference.”
“I’ve gone through the stats and we’re in a much stronger position thanks to your work. Everything is moving in the right direction.”
“Thanks for all the hard work, Tom. We really appreciate the commitment and effort you’ve put into helping us move things forward.”
As a performance-led email marketing agency in the UK, our success is measured through real business outcomes, not vanity metrics. Below is how we've helped eCommerce brands scale using structured Klaviyo systems, segmentation, and full-lifecycle automation.
From $2.3million to $12million at 10x ROAS using Google, Meta & Pinterest.
Achieved $500K at 9x ROAS in July 2024.
From $300k/month to $1million/month at 4x ROAS.
You hired an agency that promised the world. Three months in, campaigns still get sent to everyone the same way, the welcome flow is basically untouched, and open rates look fine while revenue barely moves.
You don't have an email problem. You have a system problem — no segmentation, no flow strategy, no structure built to turn a quiet list into repeat revenue.
That's the problem Rozee Digital was built to fix.
A senior Klaviyo strategist — not a salesperson — audits your account and hands you a scaling roadmap you can execute with us or without us.
Full Klaviyo account audit across flows, segmentation, and campaign strategy
Deliverability & list health check — domain reputation, sender score, and what's hurting your inbox placement
Flow diagnosis: which automations are missing and where revenue is leaking
A 90-day revenue roadmap with flow build-out, segmentation plan and SMS integration
You fill in the 60-second form — we review your answers before the call.
We audit your account and build your Growth Plan.
We walk you through it on a 30-minute call. The roadmap is yours to keep.
No obligation. No junior handoffs. Rolling 30-day terms if we work together.
Every result on this page starts with a flow. Here's how our email team turns your Klaviyo account into an automated revenue engine.
Strategic timing and product-focused messaging built to convert new subscribers into first-time buyers, introducing your brand and driving fast initial purchases.
Behavioural triggers, timely reminders and urgency-driven copy that bring customers back to checkout and recover lost sales without extra ad spend.
Tailored follow-ups and product recommendations that increase repeat purchases, strengthening relationships and turning one-time buyers into loyal customers.
Personalised messaging and exclusive offers designed to reactivate inactive subscribers, reducing churn and bringing dormant customers back into the revenue cycle.
Being a Klaviyo-focused email marketing agency, we don't rely on generic blasts. Every account is built using a structured lifecycle framework designed to balance acquisition, retention, and scalable revenue across email and SMS.
We handle complete Klaviyo setup and optimisation, including integrations, tracking, and deliverability setup, creating a strong foundation for scalable email marketing success.
We build segmentation strategies based on real customer behaviour, purchase history, and engagement data, ensuring every message reaches the right audience at the right time.
We design automated email and SMS flows that nurture customers through the full lifecycle, from welcome series to abandoned cart and post-purchase sequences.
Our ecommerce ads agency ties email and SMS into your wider paid strategy, so retention and acquisition work together to grow lifetime value.
We integrate SMS marketing with email to create a full lifecycle system, increasing engagement and ensuring you reach customers across every touchpoint.
Modern retention marketing is no longer just about sending email campaigns in isolation. As a performance-driven DTC marketing agency, we build an integrated ecosystem across email and SMS to maximise engagement, revenue per customer, and conversions at every stage of the lifecycle.
We don't treat email and SMS as separate channels. Campaigns and flows run seamlessly across both for consistent messaging, stronger brand recall, and improved conversion opportunities through multiple touchpoints.
We segment by purchase history, browsing behaviour, engagement level, cart activity, and customer lifecycle stage, so every message reaches the right subscriber at the right time.
We implement advanced flow logic that follows subscribers across email and SMS, re-engaging them with personalised messaging designed to move them closer to conversion.
We continuously optimise send times, frequency, and channel mix, ensuring messages land where your audience is most responsive — improving open rates, CTR, and overall revenue efficiency.
We begin by setting up and auditing your Klaviyo account, integrations, and tracking so every flow and campaign decision is backed by real customer and revenue data.
We monitor sender reputation, authentication, and inbox placement, ensuring your emails actually reach the primary inbox instead of getting buried or filtered as spam.
We configure attribution settings to measure performance correctly across flows and campaigns — understanding which sequences and segments are truly driving revenue, not just opens.
We continuously monitor list health and engagement signals to keep your sender reputation strong, reducing wasted sends and scaling campaigns more efficiently over time.
In modern retention marketing, copy and offer are the single biggest factors determining performance. As a performance-driven email marketing agency, we don't just send campaigns; we engineer messaging systems designed to capture attention, communicate value instantly, and convert quiet subscribers into paying customers.
We write every email and SMS as part of our wider retention strategy, built around clear value and a single strong call to action rather than generic brand messaging.
The subject line decides whether an email gets opened at all. We test subject lines and preview text systematically, focused on curiosity, urgency, and personalisation to lift open rates.
Every campaign is built with segmentation in mind from the start — new subscribers, repeat buyers, and lapsed customers get different messaging, not the same blast to everyone.
Instead of relying on a trial-and-error approach, we use a structured testing system across every flow. Timing, copy, and offers are tested systematically, and performance data determines winners.
Winning flows are not left untouched; they are continuously refreshed and improved. Our team develops new variations, timing, and offers to prevent fatigue and maintain strong performance at scale.

Not all agencies approach retention marketing the same way. As a specialised ecommerce email marketing agency, we focus on building predictable, scalable revenue systems instead of sending disconnected campaigns that burn engagement without structure.
We build full-lifecycle systems for eCommerce brands, connecting welcome, conversion, and retention flows to drive scalable, profitable growth.
We combine high-converting flows with data-driven testing to improve performance, reduce list fatigue, and scale campaigns efficiently.
We prioritise revenue per email, retention, and lifetime value over vanity metrics, ensuring every campaign decision supports long-term profitability.
We create repeatable growth systems and work as your partner, continuously optimising flows and campaigns to drive consistent, scalable results.
We begin with a deep audit of your email marketing setup, customer data, and performance metrics, uncovering hidden revenue gaps and missed opportunities before aligning on KPIs.
We create a tailored email marketing strategy aligned with your business goals and customer journey, including funnel mapping, campaign planning, and segmentation structure.
We optimise your Klaviyo account for performance and scalability, from account structure and integrations to deliverability and tracking.
We design and develop high-converting email campaigns tailored to your audience and brand, aligning messaging with your goals across every touchpoint.
We build advanced flows that generate revenue around the clock, from welcome and abandoned cart sequences to post-purchase and winback flows.
We continuously monitor performance using A/B testing, revenue tracking, and detailed reporting, refining what works and scaling it methodically.
"We were already scaling, but growth felt risky. Rozee Digital helped us break through to seven-figure months in just 70 days, while keeping efficiency intact. The difference was how disciplined they were about when and how to scale."
"Partnering with Rozee Digital led to over 50% growth while improving our Meta ROAS. We moved to Tom after inconsistent results with freelancers and larger agencies. The difference was clarity, ownership, and execution."
"Rozee Digital didn't just help us grow — they helped us grow profitably. By tightening acquisition efficiency and aligning creative with the funnel, we saw over 40% revenue growth without increasing pressure on margins."
"Rozee Digital helped us scale profitably by focusing on the things that actually matter — creative, offers, and margins. Clear strategy, strong communication, and a genuine growth partner we trust."
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If you're facing low engagement, poor conversions, or an underused subscriber list, we implement a structured system built for predictable scaling. We audit your account, fix gaps in segmentation, flows, and deliverability, then rebuild your email and SMS system to increase retention and revenue.
Book a Free Strategy Call
Our email marketing agency is powered by Klaviyo specialists, retention strategists, and eCommerce specialists focused on scaling profitable email and SMS systems for your brand.
A senior strategist owns your account and your number. They set the plan, run your calls, and answer to your revenue target — no account-manager relay, no junior handoffs.
Senior strategists manage your account daily — building flows, structuring segments, and killing underperforming campaigns before they compound.
Copywriters brief, produce and iterate your flows and campaigns, with paid media specialists closing the loop so ad traffic turns into repeat revenue.
One pod, capped workload. We stay at 20 client partners so the people who pitch your account are the people who run it.
The cost depends on your business size, email volume, and goals. We offer flexible packages covering strategy, design, automation, and reporting, all tailored to maximise ROI and scale revenue.
Email marketing increases conversions, repeat purchases, and customer retention. Through automation, segmentation, and personalised messaging, it turns your email list into a consistent and scalable revenue channel for growth.
We manage promotional campaigns, abandoned cart emails, welcome sequences, post-purchase flows, winback campaigns, product launches, newsletters, and engagement emails, all designed to drive conversions and long-term customer relationships.
We track revenue per email, conversion rates, click-through rates, open rates, and customer lifetime value. Every campaign is optimised using real performance data to ensure consistent improvement and measurable results.
Yes, we integrate SMS marketing with email to create a full lifecycle system. This approach increases engagement, improves conversions, and ensures your brand connects with customers across multiple touchpoints effectively.
If you're serious about scaling your e-commerce brand, you need more than just campaigns; you need a structured retention system built for predictable revenue. As a results-driven email marketing agency, we fix what's holding your channel back, from weak segmentation to missing flows and poor deliverability.
Every strategy we build is focused on lifting revenue per email, improving retention, and unlocking scalable lifetime value. Stop guessing and start building a profitable UK ecommerce Klaviyo system designed for long-term success.