Klaviyo Agency Partner Directory

Ackermann is the leading Danish e-mail marketing agency. With headquarters in Copenhagen, Denmark, Ackermann works with companies of all sizes both nationally and internationally. We work with a wide range of companies, from small startups looking to scale through targeted e-mail marketing, to large international corporations wanting to harness the power of e-mail and marketing automation. Ackermann’s laser-focus on e-mail marketing allows us to provide an outstanding variety of services that cover all areas of e-mail marketing: • Setting up automated e-mail flows • Setting up targeted e-mail campaigns • Crafting compelling copy • Crafting creative e-mail design • Increasing revenue by crafting conversion-driven content • High focus on optimization and split-testing of e-mail flows • Ongoing support and reporting

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.

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.

Lilo Social is a full-funnel e-commerce agency out of Brooklyn, New York specializing in Email + SMS, Paid Social + Search, Creative, and Landing Pages. We help e-commerce brands scale by bringing data-driven decisions and creativity together for a full-funnel marketing approach. Our approach allows us to work alongside your brand team as your growth partner, with a true in-house feel. We have a track record of helping to engineer high-performing strategies to scale your brand, profitably.

Shopify’s #1 Retention Agency Turning Your Customers into Loyal Fans. We offer a comprehensive email and SMS marketing solution for e-commerce businesses. Our team of experts will work closely with you to create and execute personalized campaigns that drive sales and customer engagement. With our full-service approach, you can replace the need for multiple employees and enjoy the benefits of a dedicated expert team at a fraction of the cost. Thinking about working with us? Complimentary for Qualified Brands: • Migration from any platform over to Klaviyo • Audit, Action plan, and proposal for your brand. Standard Scope of Work: • Team of 6 Experts for You • Competitor Data Analytics (Frequency, Terms, Send Times, Etc.) • Retention Strategy (Customer Journey + Loyalty and Referral) • Creative Implementation, and Reporting • Emails Flows • SMS Flows • Monthly Email + SMS Campaigns • Popup Builds + Optimizations

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 AG1, Virgin, Britvic, Huda Beauty, Surreal, Spacegoods, Osprey, Oh Polly, Chilly's, Wild 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/

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.

Brynley King is a results-driven eCommerce Marketer specialising in Advanced Email Marketing (Klaviyo Master Platinum Partner), eCommerce Conversion Optimisation and eCommerce Growth Strategy. Based on the Gold Coast, Australia, Brynley is the 2018 Australian Women in Digital - Digital Marketer of the Year and Top 102 International Pioneers of Chinese juggernaut Alibaba.com’s B2B platform. Bryn’s mission is to help accelerate the growth of eCommerce brands working to the Audit, Strategy, Action Plan, Implementation, Analysis & Repeat framework. Over the last 10 years Bryn has personally worked with over 70 Australian based brands such as Naked Harvest Supplements, Infamous Swim, Ugg Since 1974, Sans Drinks, Tesalate, Velour, Evolve Skateboards, VANI-T Tan & Makeup, Seed & Sprout and The Digital Picnic just to name a few.

A digital growth agency that helps eCommerce businesses scale. Our team of entrepreneurs and creatives are passionate about growing brands and helping businesses scale. As eCommerce business owners ourselves, we understand the pain points and challenges that direct to consumer brands face because we have experienced the same struggles in our own ventures. Resources: 1. Free Consultation/Email + SMS Audit for qualified brands. 2. Complimentary Migration from any platform over to Klaviyo Standard Scope: 1. Retention Strategy, Creative Implementation, and Reporting 2. Emails Flows + Optimizations 3. SMS Flows + Optimizations 4. Monthly Email Campaigns 5. Monthly SMS Campaigns 6. Popup Builds + Optimizations

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.

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.

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.

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

Next level CRM & email marketing With smart automations and highly relevant campaigns, we turn email into a true growth channel. From powerful flows to always-on revenue, we help you get more out of your customer base through clever personalization and data-driven choices. Everything with one goal: maximum impact. Active across Europe We work with brands in multiple markets, always with a local approach: -The Netherlands – https://www.mailmeisters.nl/ -Germany – https://www.mailmeisters.nl/de/ -Spain – https://www.mailmeisters.nl/es/ -United Kingdom – https://www.mailmeisters.nl/en/ -Belgium – https://www.mailmeisters.nl/ Marketing automation Personal, relevant and perfectly timed. We map out the complete customer journey and build targeted automations that drive engagement and revenue at every step. Technical integrations No integration is too complex. We make sure your Email Service Provider or Customer Data Platform connects seamlessly with platforms like Magento, Shopify, WooCommerce, custom-built systems and everything in between. Klaviyo & Shopify Markets migrations Expanding internationally or moving to Shopify Markets? We’re experts in migrating complex Klaviyo setups across markets. From data structure and segmentation to flows, consent and deliverability, we make sure your Klaviyo account is fully future-proof and ready to scale, without losing performance or revenue along the way. Email marketing strategy What do you really want to achieve with email marketing? We challenge your goals, define a clear strategy and help you unlock the full potential of your database. Campaign management The backbone of your email marketing. From strong campaigns to smart follow-ups, we make sure everything fits into a well-thought-out approach that goes beyond email. CRM & database management We turn data into insight. Who are your most valuable customers? Where are growth opportunities? Using RFM segmentation and a clear customer pyramid, we create visibility and activate your database with the right automations.

Tinuiti is the largest independent full-funnel marketing agency in the U.S. across the media that matters most, with $4 billion in digital media under management and more than 1,200 employees. Built for marketers who demand growth and accountability, Tinuiti unites media and measurement under one roof to eliminate waste—the biggest growth killer of all—and scale what works. Its proprietary technology, Bliss Point by Tinuiti, reveals the truth around growth and waste, and how to capitalize on it. With expert teams across Commerce, Search, Social, TV & Audio, and more, Tinuiti delivers measurable results with brutal simplicity: Love Growth. Hate Waste. https://tinuiti.com/

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.

Colorz is a French digital agency focused on accelerating the growth of online sales for ecommerce brands. • CRM: From the strategy to its implementation, we create sophisticated flows and engaging campaigns with a deep customer data analysis to help capture prospects, nurture leads, and build loyalty from existing customers. • Website : as Shopify Plus Partner, our services include UX/UI, e-shop development, CRO optimization, complex SI integration, app development and more • Design and brand content : We shoot or design engaging creative content for our customers’ digital ecosystem (video, photos, motion design, copywriting…) • Performance Marketing : we build data-driven media campaigns (Facebook, Google, Instagram, Tiktok, native ads…) to reach our clients audience and accelerate traffic and revenue growth.

2025 Klaviyo Partner of the Year Rising Star. Even if you're already using Klaviyo, chances are you're leaving money on the table every month. We're a Klaviyo Elite Partner that builds custom Retention Intelligence™ systems for established brands doing $5M+ in revenue, turning more one-time customers into repeat buyers so the money you spent acquiring them doesn't go to waste. Here's what makes us different: While other agencies use cookie-cutter templates, we'll run our proprietary Retention Diagnostic™ on your data and present your custom retention blueprint in under a week, completely free. Here's what you'll get: Your custom flows designed for your brand DNA and how YOUR customers actually buy, done for you. No guessing what to say, how to say it, or who to say it to or when. We'll review it with you, and when you decide for yourself that you want it, we'll install it in your Klaviyo account. Schedule a Call: https://www.a-game.digital/book-a-call Cheers, George Rodríguez Founder and Principal https://a-game.digital

Premium eCommerce marketing services. Partner with specialist channel Directors to achieve your goals. LION stands for Leaders In Our Niche, and we are a team of seasoned and passionate eCommerce marketing specialists driven by performance and focused on providing an exceptional client experience. LION Digital was founded to bridge a gap in the agency landscape filled with just two major types of agencies: generalist agencies that are heavily relying on junior, low experience resources, and specialised agencies, focused on a single channel. Now you can house all your eCommerce marketing vendors under one roof, thanks to the innovative LION’s channel-focused model.

We help 7- and 8-figure ecommerce stores kick ass at email and SMS. We keep your subscribers and customers excited and engaged while turning *owned* marketing channels into your top revenue drivers. More → https://luckandco.agency — WHY US — 1. Results and focus on your revenue We 2-5X your email revenue in the first 60 days. We've done it multiple times over. See the Case Studies on our site. 2. Laser Focus We only work with ecommerce and only do Email & SMS. Because of that laser focus, we drive outstanding results. 3. Custom approach + 24/5 support While we do follow a proven framework that yields results each time, it works because we adjust it to YOUR brand and YOUR customers. We're always just an email or a call away if you have questions or need help. Visit us at https://luckandco.agency to learn more.