Klaviyo Agency Partner Directory

Underground Ecom is the Leading eCommerce Retention and Email marketing agency for the US & UK and Klaviyo Partner Of The Year 2025 along with having the highest ranking of Klaviyo Master Elite. Having worked with global leaders from Virgin, Britvic, Huda Beauty, Surreal, Spacegoods, Osprey, Oh Polly, Chilly's and other 8, 9 and 10 figure ecommerce brands, we know what it takes to be ahead of the pack. We specialize in end-to-end management of your Klaviyo account including: • Strategy • Content creation • Split testing & optimization • Technical support • Reporting Our team becomes the CRM arm of your business and integrates deeply with your existing team so you get the benefit of an “in-house experience” with the expertise that comes with working with a specialized agency. If you are looking for an experienced highly specialized team to support your brand in growing email engagement and revenue then book a free audit with our team below to find out where your Klaviyo account can be optimized to increase performance. Schedule a call with our team today using the link below! https://www.undergroundecom.com/thank-you-confirmation/

Get more value from your marketing efforts with a proven Klaviyo Elite Master partner. Northern is relied on for our expertise in delivering exceptional retail experiences and maximizing eCommerce performance. With a proven track record of empowering businesses to thrive in the competitive digital landscape, Northern Commerce stands at the forefront of innovation, specializing in Klaviyo integrations and collaborating seamlessly with various platforms such as Commerce Cloud, Adobe, Big Commerce, and Shopify.

Groove Commerce is a full-service agency that designs, builds and grows websites for leading eCommerce brands. Founded in 2007, the agency has helped hundreds of clients drive measurable impact and ROI. Groove Commerce uses 5 Core eCommerce Metrics to build strategic and impact-driven partnerships. The agency has accumulated more than 30 industry awards for its work with clients including Dippin’ Dots, The US Open Shop and Cutter & Buck. Additionally, Inc. Magazine, The US Agency Awards and Business Insider have recognized Groove Commerce for its growth and culture. A variety of design, development, and marketing case studies are available on the Groove Commerce website. Read how Groove Commerce has delivered impact-driven results for numerous clients by following the links below: Increasing Flow-Attributed Revenue by 46% With Klaviyo: https://www.groovecommerce.com/ecommerce-blog/elmhurst-klaviyo-flows Increasing One Athleisure Brand's Email Revenue 28%: https://www.groovecommerce.com/ecommerce-blog/klaviyo-case-study/ We Increased Email Revenue 126% With Our Signature Klaviyo Jumpstart https://www.groovecommerce.com/ecommerce-blog/klaviyo-jumpstart Groove Commerce is a Platinum Klaviyo Partner, Elite BigCommerce Partner and Shopify Partner agency. For more information, please visit https://www.groovecommerce.com or reach out using the “Contact” button on the left side of the page.

Mineral.io is a full-service retention marketing agency that helps DTC brands increase customer lifetime value through data-driven email, SMS, direct mail, and push notification campaigns. Our retention programs are designed to build loyalty, boost repeat purchases, and maximize ROI across every customer touchpoint. With multiple program tiers, we customize each strategy to fit your brand’s unique goals and growth stage. Learn more about our retention marketing services here: https://www.mineral.io/#Services

Code is one of the first and leading Shopify Plus agencies in Europe and one of the four Klaviyo Elite partners in EMEA. We help our clients to a high-end Shopify Plus webshop, but also to an impressive conversion rate. Our weapon of choice? Klaviyo. On average, e-commerce brands attribute around 20% of their revenue to email marketing. At Code, we have many clients performing way better than that, with up to 50% of their revenue coming from email marketing. • Klaviyo onboarding and training • Setup best practice flows • Audit and clean your email list • Craft engaging and conversion-driven email campaigns that increase revenue • Ongoing support and monthly strategy sessions • Constant optimization & split testing of email flows • Growing and segmenting your email list

Power Digital is a tech-enabled growth firm––at the intersection of marketing, consulting & data intelligence––igniting revenue and brand recognition for leading and emerging companies around the world. At the heart of Power Digital is proprietary technology, nova, which analyzes businesses through first-party data, simplifying investment planning for marketing and diligence in M&A––putting marketers in a strategic seat at the table––and providing value in unparalleled ways. Managing billions in media, Power Digital’s dynamic team––of consultative marketers, creatives, analysts and technologists––challenges traditional ways of planning, execution and measurement through meticulous testing and data science across each milestone of the customer journey.

Arctic Leaf is a Baymard certified UX/UI design and implementation agency who takes the time to understand your brand voice and vision to deliver effective e-commerce experiences. Our suite of custom design and development services and integrations allow for bespoke web and mobile solutions that are thoughtfully created to meet the unique needs of every client. With robust expertise in UX/UI design, conversion rate optimization (CRO), software development, and growth marketing, our team has established Arctic Leaf as an innovative leader in the e-commerce and mobile development markets.

Domaine is the world's largest independent Shopify design and development partner. We are a team of commerce experts dedicated to creating, building, and growing beloved and ambitious brands. As pioneers and not just participants in our industry, we are inspired to write, break, and re-write the rules for a new generation of commerce.

We are specialized in E-Mail Marketing for E-Commerce. Currently, we mainly operate in the DACH (Germany, Austria & Switzerland) market and work with some of the biggest German E-Commerce Brands. But since this year we are also helping some clients expanding to the UK, USA, France and Poland. We are completely specialized in Klaviyo. Feel free to get in touch with us and convince yourself of our quality. We don't leave the office at 4p.m., we leave it when all our clients are on track.

DRINKS Amplify, powered by DRINKS, helps Shopify alcohol merchants scale and succeed with expert lifecycle marketing and eCommerce solutions. As the premier partner for alcohol brands and retailers, we combine deep industry expertise with advanced Shopify integrations to enable merchants to acquire, engage, and retain customers effectively. We drive customer retention with data-driven lifecycle marketing services, including email, SMS, and push notifications. Through personalized campaigns and AI-powered automation, we maximize engagement, repeat purchases, and lifetime value. Beyond lifecycle marketing, our team provides end-to-end web development and design services, creating visually stunning Shopify stores tailored to the unique needs of alcohol merchants. From custom themes to optimized checkout flows, we ensure online stores deliver exceptional user experiences that drive conversions while meeting complex alcohol sales regulations. Our custom Shopify themes are designed to be both impressive and compliant with industry-specific requirements. With DRINKS Amplify, alcohol merchants gain the tools, expertise, and support needed to thrive in the competitive eCommerce landscape, transforming their digital presence into a powerful growth engine.

Hustler Marketing is an award-winning email marketing agency that helps extend the Lifetime Value of your customers with a complete, Done-For-You email and SMS marketing service. In 2023, we generated $100Mn+ for our clients in email revenue. Each of our eCommerce clients gets a 4-person team who takes full control of their email & SMS channels: • An experienced Account Manager who oversees strategy, reporting and briefing of creatives. • A designer and copywriter who craft engaging, on-brand emails that boost retention revenue. • A technical specialist to ensure optimal integration with your Email Service Provider. We pride ourselves on maintaining the best client-to-manager ratio in the business. Each of our Account Managers takes care of only 2-3 stores, ensuring that they always have the time to give each one the focus it deserves. Most of our clients start seeing growth in open rates, click rates, spam rate reduction, and a marked increase in email revenue within 2-3 months working with us.

PAASE is a UK-based, Klaviyo Master Elite agency founded in 2019 and headquartered in Milton Keynes/Buckinghamshire. From the outset, we’ve specialised in helping eCommerce and D2C brands harness zero‑ and first‑party data to craft smarter, more personalised email and SMS journeys. As pioneers, we were the first UK agency to achieve Klaviyo Platinum Master status, and the first Elite Master partner headquartered in EMEA. Our approach blends cutting‑edge AI with rigorous commercial focus. We design predictive segmentation and dynamic content workflows that adapt in real time—optimising send times, content, and customer experiences at every stage. Leveraging an Urgency‑Impact framework, we prioritise high‑ROI initiatives through iterative testing and AI‑driven automation, ensuring efficiency and relevance. We form long‑term partnerships rooted in transparency, data‑backed decisions, and shared success. Whether delivering rapid revenue uplifts—such as a 233 % increase in automated revenue and 238 % more daily orders for Okanui—or building sustainable frameworks, our portfolio spans global brands across beauty, fashion, homewares, wellness, and more. With PAASE, Klaviyo clients gain a partner who merges technology, strategy, and commercial insight to fuel scalable growth.

At Get Better, we’re all about making CRM and retention work harder for your brand. We help businesses turn customer data into meaningful connections and drive revenue, by combining best-in-class CRM strategy with creative, personalised, segmented and targeted campaigns and flows. As Klaviyo partners, we’re at the forefront of their evolution into the first true B2C CRM, helping brands not only with email marketing, but with the full customer experience and the wider retention piece. From migrations to audits to ongoing management, we pride ourselves on being the team that spots the gaps, fixes the leaks, and builds a setup that’s made to help brands take their CRM to the next level by driving connections with your customers. Our services include: • Klaviyo Multi-channel Setup & Management: Crafting templates for future campaigns and assisting with seamless Klaviyo B2C CRM integration into your marketing strategies across the different communication channels. • Klaviyo Management: Managing your Klaviyo account, creating engaging email campaigns, strategising for revenue generation, and providing monthly performance reports. • Klaviyo Flow Optimisation: Redesigning and optimising your flows to maximise revenue, generating performance reports, and integrating with loyalty platforms. • Klaviyo Integrations: Our team excels at seamless Klaviyo integrations, your eCommerce platform, CRM, and other tools work in harmony to unlock the full potential of your marketing strategy. Why Brands Choose Get Better? • Data-Driven Results: We continuously monitor key metrics to refine and optimise your campaigns for maximum ROI. • Custom Solutions: Your brand is unique, and so are our strategies. We tailor every solution to your goals and audience. • Creative That Converts: With a sharp eye for design and storytelling, we craft campaigns that engage and convert. • Holistic Approach: Our email marketing and retention strategies are built to complement your overall business goals, not compete with them. • Innovation-Driven: Harnessing the ever-evolving B2C CRM tools that Klaviyo offers to deliver innovative opportunities for your business. Your Growth, Our Commitment We’re not here to just “manage your account.” We’re here to help you build a powerful CRM-driven growth engine. Whether it’s boosting CLV, improving retention, or making every touchpoint count, our mission is simple: good work, for good people, by good people. Let’s Get Better together.

&BAM is all about creating excitement in your email and SMS marketing campaigns, helping your business grow while building a loyal customer base. We’ve worked with bazillions of clients, making sure each and every one of them attracts loyal customers that feel warm and fuzzy about our clients’ brands. When you partner with &BAM, we can promise you the following: • Complete Email/SMS loyalty marketing strategy • Copywriting, design, and the technical mumbo jumbo • Quality, flow, and deliverability For the &BAM Team, it’s all about creating un-f*cking-believable relationships — both with our clients and between our clients and their customers! This is our mission, and it’s what propels us ever forward to do the best work possible for our clients. In order to fulfill this mission with each and every client, we tailor our Big Bam Process to each client’s particular needs. Learn more and schedule a call with us at --> andbam.co

About Us Founded in 2014 and based in Sydney, Australia, we are a team of 35+ experts dedicated to helping leading and emerging retail brands scale and grow through performance marketing. By seamlessly blending technology, creativity, and data, we craft strategies that drive real impact. We specialize in accelerating growth for DTC retail brands, working shoulder-to-shoulder with our clients to achieve measurable outcomes. We believe that true success doesn’t happen in isolation—when executed with precision, the whole is always greater than the sum of its parts. Specialising in the key pillars that drive the greatest growth, our offering is carefully crafted to focus on best-in-class platforms, methodologies, and technologies. • Acquire: Acquire new customers online and offline through paid or programmatic media channels such as search, social and digital out of home • Retention: Maximise customer lifetime value with pre and post-purchase activities through email/SMS marketing, loyalty/referral programs. • Measure: Scientific insights and data solutions across performance media, customers, orders and products that help you scale successfully. CRM Klaviyo Growth Plans Our Klaviyo Growth Plans support clients with a range of strategies to increase customer lifetime value. Our deliverables include Klaviyo audits, flow/automation strategies, deliverability, segmentation strategies, template design and implementation, campaign management, reporting, analytics and omni-channel strategies and integrations. Platform and Data Migrations We handle complex migrations between marketing platforms, ensuring your customer data, segments and templates transition smoothly with minimal disruption to your marketing operations. Our methodical approach preserves data integrity while setting you up for future growth on Klaviyo. • Platform Assessment - Thorough evaluation of your current setup to identify all critical components for migration. • Customer Data Transfer - Secure movement of customer profiles with their complete deliverability status. • Segment Preservation - Careful recreation of your valuable customer segments and list structures or establishing a new structure for changing needs • Template Implementation - Thoughtful rebuilding of your email templates with opportunities for enhancement or building new templates to provide fresh direction. • Migration Verification - Comprehensive testing to ensure all systems function properly post-migration.

Chronos Agency is a Lifecycle Marketing Agency helping high-growth DTC brands scale profits with Email, SMS, and Push Marketing. With our cross-industry experience and data-driven marketing strategies, we help e-commerce businesses boost their total online revenue by 20% to 30%. We're a global team of 80 that acts as an extension of your business, offering end-to-end service including copywriting, graphic designs, strategy, and execution. SERVICES WE PROVIDE: • Email Marketing & Automation • SMS Marketing • App & Web Push Marketing & Automation • Social Media Management • Shopify Store Web Development • Performance Creatives 🔥 $181M+ Returns From Email 😎 300+ Wowed Clients 🚀 3500% Average Client ROI

The Working Party design and build best-in-class eCommerce websites on Shopify Plus for retailers with complex technical requirements, who value brand and seek rapid growth through innovation. Our clients are market leaders — pushing boundaries and capitalising on opportunity at home and abroad. Our brand-side experience and empathy for the retailer are unparalleled in the Shopify Plus agency space. We work with brands like yours to accelerate your online sales on Shopify Plus, the world’s best eCommerce platform — but we are not your standard eCommerce agency. After refining our process leading high visibility digital and design transformation projects to create websites millions use every day, we turned our focus to eCommerce - applying the same rigorous process and flawless execution. Our leadership and cross functional team have a wealth of in-house, retail expertise, after working brand side for leading Australian retailers. The culmination of this experience, consolidated in our projects for leading retailers JB Hi-Fi, KOOKAÏ, Assembly Label and Lovisa, speak to our ability to profoundly impact the brands we partner with.

Zettler Digital is a digital marketing agency for Klaviyo retention, paid media and Shopify development. We help brands convert better, keep more customers and spend smarter.

We're UN/COMMON, and we bring an unconventional approach to strategy, UX, creative, and retention email & sms marketing –with profit-first results. Because you want an agency that gets more out of your marketing dollars and actually makes you profit. So avoid the old churn-and-burn agency model, partner with the uncommon agency, and unleash sustainable, profitable growth. You can read more about our Lifecycle Retention Marketing Mgmt Services here: https://uncommonagency.co/pages/consumer-retention You can also check out our client portfolio here: https://uncommonagency.co/pages/our-work ------------ Lifecycle Retention Marketing Services Overview: Full Scale Lifecycle Retention Email & SMS Marketing Mgmt: • Content Calendar Strategy & Development • Flow Strategy & Optimization • List Segmentation & Management • Ongoing Content Calendar Strategy & Development • Campaign & Flow Creative Concepting, Design & Copywriting • Campaign & Flow Execution, Build & QA • SMS Strategy, Management & Execution • Monthly and Quarterly Insights & Analytic • Custom Packages available upon request Strategic Consulting & Program Roadmapping • List Segmentation • A/B Testing Recommendation • Flow Strategy & Optimization • Optimization of Campaign Layouts for Conversion • Ongoing Content Calendar Strategy & Development • SMS Strategy & Development • Campaign Build & Execution • Monthly and Quarterly Insights & Analytics • Custom Packages available upon request We don't limit lifecycle marketing to just email and SMS. We utilize various channels to connect with customers at their preferred touch points, creating a comprehensive strategy for boosting customer lifetime value. Lifecycle Retention Marketing Methodology & Levers: Email & SMS Marketing Email & SMS marketing are gold mines for unleashing sustainable growth. It’s our specialty and what drives a 3x increase in repeat purchases for our clients. Loyalty & Member Programs We specialize in forging lasting connections between brands and their customers, with tailored loyalty programs and referral initiatives to boost engagement and enhance lifetime value. Dedicated Technical Support You get a direct line to our in-house deliverability, compliance, and acquisition experts. Whatever the issue — or random question about an upcoming campaign — we’re here to solve your problems. Subscription Management Your subscribers deserve the VIP treatment — they’re your most loyal customers! And we make sure they know it with tailored campaigns and exclusive offers that reward their loyalty.

Ecommerce Strategy & Development Agency | Miami, FL Located in the dynamic city of Miami, Florida, and supported by satellite offices in Los Angeles, California, and Lisbon, Portugal, Absolute Web has established itself as a prominent Ecommerce Growth Agency since 1999. Our unwavering commitment to helping businesses achieve and surpass their ecommerce goals is driven by the utilization of cutting-edge technologies, customized development processes, user-centric UI/UX designs, seamless API integrations, and effective digital marketing strategies. Our agency's core strengths include: 1. Shopify Development 2. Magento Development 3. BigCommerce Development 4. Custom Solutions 5. API Integration 6. Replatforming & Data Migration 7. UI/UX Web Design 8. Conversion Rate Optimization 9. Email & SMS Automation 10. Paid Media Marketing 11. Search Engine Optimization