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Klaviyo Email Marketing Services | Drive Revenue with Personalised Automation

Transform Your Email & SMS Engagement with Klaviyo Email Marketing Agency

Convert more customers, drive repeat purchases and increase lifetime value with high-performing email marketing strategies powered by Klaviyo. Accelerate Growth with Intelligent Automations, Personalised Campaigns & Revenue-Driven Journeys.

  • 💡 ROI-Focused Email Design
  • ⚡ Expert Segmentation and Automation
  • 🔧 D2C & B2B Experts
  • 🚀 200+ Campaigns Delivered
Klaviyo Partner Agency
Klaviyo Email Marketing Agency

Trusted by Brands Big and Small, We drive growth with Klaviyo email and SMS marketing that converts customers into loyal advocates.

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BIC
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globwest
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Case Studies

23 Digital has successfully delivered high-impact email and retention programmes for hundreds of ecommerce brands, backed by more than 20 years of digital commerce experience. As a Klaviyo-focused agency, we specialise in building and optimising intelligent email and SMS marketing ecosystems that drive customer lifetime value, repeat revenue and long-term growth.

As a Certified Klaviyo Marketing Agency,
We Turn Customer Data into Predictable Revenue

As a certified Klaviyo email and SMS marketing agency, we help ecommerce brands unlock sustainable growth by transforming customer data into highly personalised, revenue-generating communication. Our approach focuses on building intelligent lifecycle journeys that strengthen customer relationships, improve retention and deliver measurable commercial outcomes.

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Lifecycle & Retention Strategy

Unsure how to approach retention or maximise customer lifetime value? Our team of experienced Klaviyo consultants craft bespoke lifecycle and retention strategies aligned to your business objectives. By combining behavioural data, predictive insights and industry expertise, we create scalable frameworks that drive repeat purchases and long-term loyalty.

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Klaviyo Account Setup & Architecture

A strong foundation is critical for performance. We design and configure Klaviyo accounts with precision, ensuring seamless integration with your ecommerce platform and a clean, future-ready data structure. From event tracking and list management to segmentation architecture, every setup is engineered to support advanced automation and accurate revenue attribution.

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Klaviyo Email Campaign Management

We deliver customer-centric Klaviyo email campaigns that balance creativity with conversion. Every campaign is strategically planned and optimised to engage audiences at the right moment, ensuring your messaging feels relevant, timely and aligned to your brand while consistently driving measurable results.

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Klaviyo Automation & Flow Optimisation

Our Klaviyo automation strategies are designed to work around the clock, nurturing customers through every stage of their journey. From onboarding to re-engagement, we build and refine automated flows that increase conversions, strengthen brand affinity and contribute directly to predictable revenue growth.

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Advanced Segmentation & Personalisation

Personalisation is at the heart of high-performing email and SMS marketing. We leverage Klaviyo’s advanced segmentation and predictive analytics to create highly targeted audiences based on behaviour, purchase intent and lifecycle stage. This ensures every message resonates, improving engagement and driving higher lifetime value.

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Growth & Revenue Optimisation

We focus on sustainable, profit-led growth rather than vanity metrics. Through ongoing optimisation, testing and refinement, we help brands increase repeat purchase rates, improve average order value and reduce reliance on paid acquisition channels, turning Klaviyo into a core revenue driver.

Looking for a
Klaviyo Partner Agency?

Whether you are migrating from another email service provider or looking to unlock more advanced Klaviyo capabilities, 23 Digital is your trusted growth partner. We help ecommerce brands scale through strategic email and SMS marketing, seamlessly integrated within the broader Shopify ecosystem. Book a free Klaviyo strategy session and discover how smarter retention can unlock your next stage of growth.

Get a Free Quote

Your Partner for Klaviyo Success

Choose From Our
Klaviyo Email & SMS Marketing Packages

At 23 Digital, we offer flexible Klaviyo packages designed to support brands at every stage of growth from foundational setup to performance-led, ongoing optimisation. Each package is structured to maximise engagement, retention and measurable revenue impact.

Klaviyo Setup Package

One-Time Setup for a Comprehensive Klaviyo Account

Klaviyo Setup Package

Best for: Brands launching Klaviyo or migrating from another ESP.

  • One-time Klaviyo account setup and configuration
  • Welcome Flow with 3 emails
  • Thank You Flow with 3 emails
  • Abandoned Cart Flow with 3 emails
  • Initial audience segmentation, including engaged, unengaged, repeat purchasers and wholesale customers
  • Initial setup of reporting and analytics
  • One hour of an initial training session
  • 7-day post-launch support

We’ll help you set up Klaviyo correctly from day one, ensuring your data, flows and foundations are built to support long-term growth.

Klaviyo Growth Package

Ongoing Management with 2 Email Campaigns per Month

Klaviyo Growth Package

Best for: Growing ecommerce brands focused on retention and consistent engagement.

  • Ongoing Klaviyo account management
  • Optimisation of Welcome, Thank You and Abandoned Cart flows
  • Win-Back Flow created and optimised
  • Ongoing optimisation of key audience segments
  • Two customised segments aligned to business goals
  • Two email campaigns per month
  • Optimisation of one flow per month
  • Subject line A/B testing
  • Monthly performance reporting
  • Quarterly strategy sessions
  • Dedicated account manager

We’ll help you optimise and scale your Klaviyo email marketing with ongoing campaigns, automation and performance-led improvements.

Most Popular

Klaviyo Performance Package

Advanced Lifecycle Marketing with 3 Email Campaigns per Month

Klaviyo Performance Package

Best for: High-growth brands seeking deeper optimisation and revenue acceleration.

  • Full ongoing Klaviyo management and optimisation
  • Optimised Welcome, Thank You, Abandoned Cart and Win-Back flows
  • Ongoing optimisation of all key audience segments
  • Two customised segments aligned to evolving business goals
  • Three email campaigns per month
  • Optimisation of two flows per month
  • Subject line and content A/B testing
  • In-depth monthly reporting and revenue insights
  • Monthly strategy sessions
  • Dedicated account manager

We’ll help you maximise revenue from Klaviyo through advanced lifecycle strategies, continuous optimisation and data-driven insights.

Our Klaviyo Email & SMS Marketing Services. Partner with a
Results-Driven Klaviyo Marketing Agency.

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1. Klaviyo Migration & Platform Onboarding

We manage seamless migrations to Klaviyo from legacy ESPs, ensuring data integrity, clean list structures and uninterrupted communication. Our process safeguards historical data, preserves deliverability and sets your Klaviyo account up for scalable performance from day one.

Lifecycle Automation & Flow Engineering
2. Lifecycle Automation & Flow Engineering

We design and deploy sophisticated Klaviyo automations that guide customers through every stage of their journey. From first touch to repeat purchase and reactivation, our lifecycle flows are engineered to maximise engagement, retention and revenue contribution.

Advanced Email & SMS Campaign Execution
3. Advanced Email & SMS Campaign Execution

Our team delivers high-impact email and SMS campaigns built around customer behaviour and commercial intent. Each campaign is strategically planned, creatively executed and continuously optimised to drive conversions without overwhelming your audience.

Conversion & Revenue Optimisation for Klaviyo
4. Conversion & Revenue Optimisation for Klaviyo

We apply a revenue-first mindset to Klaviyo optimisation, refining messaging, timing and personalisation to increase average order value and repeat purchases. Every improvement is guided by data, testing and clear performance benchmarks.

Klaviyo Account Health, Deliverability & Maintenance
5. Klaviyo Account Health, Deliverability & Maintenance

Ongoing optimisation is essential to long-term success. We proactively manage deliverability, account health and technical performance, ensuring your emails consistently reach the inbox and your Klaviyo environment remains secure, compliant and up to date.

Paid Media & Klaviyo Audience Activation
6. Paid Media & Klaviyo Audience Activation

We connect Klaviyo with your paid media ecosystem, activating high-intent segments across platforms such as Meta, Google and TikTok. This alignment improves targeting efficiency, reduces acquisition costs and strengthens full-funnel performance.

Retention-Focused Analytics & Attribution
7. Retention-Focused Analytics & Attribution

We provide clear, actionable insights that connect Klaviyo activity directly to revenue. Our reporting goes beyond surface-level metrics, enabling smarter decisions around lifecycle strategy, campaign planning and customer investment.

Customer Insight, Segmentation & CRO for Retention
8. Customer Insight, Segmentation & CRO for Retention

Through deep behavioural analysis and segmentation modelling, we uncover opportunities to improve customer journeys and retention performance. These insights inform smarter personalisation, stronger messaging and more effective lifecycle experiences.

What our clients are saying

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Google Reviews
4.5 262 Reviews

We Design & Deliver High-Impact Klaviyo Email & SMS Marketing

As a seasoned Klaviyo email and SMS marketing agency, we operate at the forefront of retention-led growth, partnering with forward-thinking ecommerce brands to design, implement and optimise high-performing lifecycle marketing programmes. Our work centres on transforming customer data into personalised experiences that drive engagement, loyalty and predictable revenue at scale.

  • Bespoke Klaviyo Email & SMS Strategy
  • Migration to Klaviyo from Legacy ESPs
  • Conversion & Revenue-Focused Lifecycle Marketing
  • Long-Term Klaviyo Growth & Optimisation Partner
  • Personalised, Data-Driven Email & SMS Experiences
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Klaviyo Email & SMS Marketing FAQs

What is Klaviyo and how does it work for ecommerce?

Shopify is an eCommerce solution platform that allows you to start, grow and manage your own online shop. With Shopify, you can organise products, customise your shop, take payments, track and respond to orders and effortlessly run your online shop. However, it’s recommended that you hire a professional Shopify developer to work on your eCommerce site and ensure it delivers a great customer experience.

Is Klaviyo better than other email marketing platforms?

Klaviyo is widely regarded as one of the best email marketing platforms for ecommerce due to its advanced segmentation, automation and revenue attribution capabilities. Unlike generic ESPs, Klaviyo is designed to work natively with ecommerce data, making it ideal for brands focused on retention, lifecycle marketing and customer lifetime value.

Yes, Klaviyo integrates natively with Shopify and Shopify Plus. This integration enables real-time tracking of customer behaviour, purchases and engagement, allowing for highly targeted email and SMS campaigns. It is one of the reasons Klaviyo is the preferred email marketing platform for Shopify merchants.

Yes, Klaviyo integrates natively with Shopify and Shopify Plus. This integration enables real-time tracking of customer behaviour, purchases and engagement, allowing for highly targeted email and SMS campaigns. It is one of the reasons Klaviyo is the preferred email marketing platform for Shopify merchants.

Do you help migrate from other email marketing platforms to Klaviyo?

Absolutely. We manage seamless migrations to Klaviyo from platforms such as Mailchimp, Omnisend, ActiveCampaign and HubSpot. Our migration process ensures your customer data, historical insights and deliverability are preserved, while setting up a clean, scalable Klaviyo account structure.

What types of Klaviyo email flows do you set up?

We design and optimise all core Klaviyo flows, including welcome series, abandoned cart recovery, browse abandonment, post-purchase journeys, win-back campaigns and VIP customer flows. Each flow is strategically built to increase conversions, engagement and repeat revenue.

Can Klaviyo help increase repeat purchases and customer lifetime value?

Yes. Klaviyo is one of the most effective tools for improving customer retention. Through personalised email and SMS automation, brands can nurture customers beyond the first purchase, increase average order value and significantly improve customer lifetime value over time.

Do you manage ongoing Klaviyo email campaigns and optimisation?

Yes, we offer ongoing Klaviyo management, including campaign planning, copywriting, design, A/B testing and continuous optimisation. As a Web development agency, our focus is on performance and revenue, ensuring every campaign contributes to your broader growth strategy.

How long does it take to see results from Klaviyo email marketing?

While results vary depending on your business and data maturity, many brands begin seeing measurable improvements in engagement and revenue within the first 4–8 weeks. Klaviyo’s automation and segmentation capabilities allow brands to generate value quickly, especially through key flows like abandoned cart and post-purchase emails.

Is Klaviyo suitable for small businesses or only enterprise brands?

Klaviyo is suitable for businesses of all sizes, from startups to enterprise-level Shopify Plus brands. The platform scales with your business, allowing you to start with essential automations and evolve into advanced lifecycle marketing as your customer base grows.

How do I get started with Klaviyo email and SMS marketing?

The best place to start is with a tailored strategy. A free Klaviyo consultation allows us to assess your current setup, identify growth opportunities and map out a clear roadmap for improving email and SMS performance.

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