Klaviyo Agency For Ambitious Brands

A Klaviyo agency specialises in managing and optimising email and SMS marketing for ecommerce brands using the Klaviyo platform. Its primary goal is to increase customer retention, encourage repeat purchases and generate more revenue from existing customers and subscribers.

A specialist Klaviyo agency typically manages:

• Email marketing campaigns: Planning, designing and sending targeted emails for promotions, product launches and customer engagement.
• Automated Klaviyo flows: Building welcome sequences, abandoned checkout recovery, browse abandonment, post-purchase and customer win-back automations.
• Customer segmentation: Using purchase history, engagement and behavioural data to personalise communications.
• Performance optimisation: Improving deliverability, testing campaigns, analysing revenue attribution and refining customer journeys.

At Sendfluence, we combine Klaviyo expertise with a performance-led approach, focusing on measurable ecommerce growth rather than simply sending more emails.

If you’re new to the platform, our complete guide to Klaviyo for ecommerce brands explains how Klaviyo works, its key features and how businesses use it to improve customer retention and email marketing performance.

Klaviyo agency fees vary depending on your account size, the number of email campaigns and automated flows required, and the level of ongoing support. At Sendfluence, our fixed fees start from £1,000 per month.

We offer flexible engagements combining fixed and performance-linked fees, with no long-term contracts. Our approach focuses on measurable revenue growth, ensuring your investment is aligned with results.

To understand typical UK agency fees, compare pricing models and calculate the revenue uplift needed to cover your investment, explore our Klaviyo agency pricing guide and ROI calculator .

Yes. Sendfluence is an official Shopify and Klaviyo partner, specialising in email marketing for Shopify, Shopify Plus and other ecommerce platforms. We help online retailers connect their customer data with Klaviyo to deliver more relevant, personalised marketing.

Klaviyo’s Shopify integration enables brands to use customer profiles, purchase history, product activity and checkout behaviour to power targeted communications. Our Shopify email marketing services include:

• Shopify and Klaviyo integration: Configuring customer data synchronisation, event tracking and consent settings.
• Automated revenue recovery: Creating abandoned checkout, abandoned cart and browse abandonment email flows.
• Customer retention: Building post-purchase journeys, personalised product recommendations and win-back campaigns.
• Segmentation and reporting: Using Shopify purchase data to identify valuable customer groups and measure email marketing performance.

Whether you’re launching a new Shopify store or scaling an established ecommerce brand, we tailor your Klaviyo strategy to improve customer lifetime value and repeat revenue.

If you’re deciding which email marketing platform to use with Shopify, we’ve compared Klaviyo vs Mailchimp for ecommerce , including their automation capabilities, segmentation features and suitability for growing online retailers.

Many ecommerce brands can begin seeing improvements in their Klaviyo email marketing within the first 30 to 90 days, although results depend on audience size, existing account performance, deliverability and the opportunities available.

Our initial focus is identifying and addressing the areas with the greatest potential impact. These often include:

• First 30 days: Auditing the Klaviyo account, reviewing deliverability, identifying missed revenue opportunities and improving priority flows.
• Days 30–60: Optimising email campaigns, customer segmentation, automated journeys and conversion performance.
• Days 60–90: Refining strategies through testing, performance analysis and more advanced lifecycle marketing.

Our work with ecommerce brand God Save Queens provides an example of the commercial impact that effective email marketing can achieve. Our published God Save Queens Klaviyo case study reports an 83% increase in email marketing revenue following improvements to campaigns, automation and segmentation. Individual results vary and are not guaranteed.

To understand what strong performance looks like, explore our email marketing revenue benchmarks for ecommerce brands . This guide explores the metrics businesses should consider when evaluating their email marketing programme, including revenue contribution and customer retention.

At Sendfluence, our Klaviyo agency process is designed to identify revenue opportunities, implement improvements and continually optimise your email marketing performance. We tailor our approach to your ecommerce business, following five key stages:

1. Discovery and account audit: We review your existing Klaviyo setup, email campaigns, automated flows, segmentation, deliverability and revenue attribution.
2. Strategy and growth roadmap: We identify opportunities to improve customer retention, recover abandoned purchases and increase repeat revenue, prioritising work by commercial impact.
3. Implementation: Our specialists develop and optimise email templates, automated flows, customer segments and campaign strategies aligned with your brand.
4. Testing and optimisation: We continually test messaging, creative, segmentation and customer journeys to identify improvements.
5. Reporting and ongoing growth: We review performance against agreed commercial objectives and refine the strategy as your business develops.

You’ll work directly with experienced Klaviyo specialists, with transparent reporting, clear accountability and a focus on measurable commercial performance.

Rather than following a one-size-fits-all approach, we prioritise the activities most likely to generate meaningful improvements for your particular ecommerce business.

Sendfluence provides end-to-end Klaviyo email marketing services for ecommerce brands, from initial account setup to ongoing campaign management, automation and customer retention strategy.

Our Klaviyo agency services include:

• Klaviyo account setup and migration: Configuring new accounts, integrating ecommerce platforms and migrating from email providers such as Mailchimp.
• Email campaign management: Strategy, planning, copywriting, design, scheduling and optimisation of promotional and lifecycle campaigns.
• Klaviyo flow creation: Building automated welcome, abandoned checkout, browse abandonment, post-purchase, replenishment and win-back journeys.
• Advanced customer segmentation: Personalising communications using purchase history, engagement, customer behaviour and lifetime value.
• Email design and copywriting: Creating mobile-responsive emails that reflect your brand and encourage customer engagement and conversions.
• Klaviyo SMS marketing: Integrating SMS with email journeys to create coordinated, consent-based customer communications.
• Reporting and optimisation: Monitoring email performance, testing campaigns and refining strategies to improve retention and revenue.

Automated lifecycle marketing is a core part of our Klaviyo services. For a more detailed breakdown, read our guide to the essential Klaviyo flows every ecommerce brand should have , covering welcome sequences, abandoned cart recovery, browse abandonment, post-purchase communications and customer win-back campaigns.

Our services are tailored to your growth stage, whether you need foundational Klaviyo support or comprehensive lifecycle marketing management. With fixed fees starting from £1,000 per month, we structure engagements around your commercial goals.