Klaviyo Specialists

agency · Global

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 and 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.

agency · New York, NY, USA

Retention Harbor is a dedicated retention marketing agency specializing in Klaviyo-powered email and SMS for eCommerce brands, focused on increasing customer LTV and reducing churn.

agency · Brisbane, Australia

Australian digital marketing agency with Klaviyo email and SMS marketing for eCommerce brands.

agency · USA

Digital marketing agency with dedicated Klaviyo email services for eCommerce.

agency · USA

DTC growth agency with Klaviyo email and SMS as a core offering. Focus on scaling eCommerce brands through retention.

agency · Melbourne, Australia

Australian eCommerce agency with Klaviyo email marketing services. Strong in the APAC market.

agency · London, UK

UK-based email marketing agency with Klaviyo expertise. Serves eCommerce brands across Europe and UK.

agency · USA

Retention marketing agency built specifically around Klaviyo for eCommerce. Strong focus on revenue attribution and ROI.

agency · USA

Klaviyo-focused retention marketing agency for DTC eCommerce brands. Specializes in lifecycle email and SMS automation.

agency · New York, NY, USA

Brand strategy and marketing agency specializing in Klaviyo for lifestyle and fashion eCommerce brands.

agency · Lindon, UT, USA

Performance marketing agency offering Klaviyo email and SMS services alongside PPC, social, and CRO.

agency · New York, NY, USA

DTC brand builder and growth agency founded by Nik Sharma. Provides Klaviyo strategy and implementation for fast-growing consumer brands.

agency · New York, NY, USA

Shopify Plus agency with dedicated Klaviyo email marketing services. Known for design-forward email campaigns.

agency · Miami, FL, USA

Full-service eCommerce agency with Klaviyo integration expertise. Strong in Shopify Plus + Klaviyo implementations.

agency · Los Angeles, CA, USA

Performance marketing agency with deep Klaviyo expertise, specializing in DTC eCommerce growth through integrated email + paid media strategies.

agency · El Segundo, CA, USA

Top-tier digital marketing agency and Klaviyo partner. Offers integrated email/SMS with paid media and SEO for holistic growth.

agency · San Diego, CA, USA

Full-service growth marketing agency with a dedicated Klaviyo practice. Known for their proprietary nova platform combining data analytics with Klaviyo execution.

agency · Charleston, SC, USA

eCommerce performance marketing agency (merged with Wpromote) known for Klaviyo lifecycle marketing.

agency · United States

E-commerce growth agency leveraging Klaviyo email and SMS marketing to build retention-focused revenue streams for online brands.

agency · United States

Full-service DTC marketing agency offering Klaviyo email marketing, SMS automation, and retention strategies as part of comprehensive growth solutions.

agency · United States

E-commerce retention marketing agency specializing in Klaviyo email flows, SMS campaigns, and customer lifecycle strategy.

agency · United States

Email and SMS marketing agency focused on Klaviyo-powered retention strategies for e-commerce brands seeking predictable revenue growth.

agency · United States

Multi-channel e-commerce agency offering Klaviyo email and SMS marketing services for marketplace and DTC brands.

agency · Canada

Full-funnel performance agency leveraging Klaviyo email and SMS marketing for direct-to-consumer brands seeking scalable growth.

agency · Australia

Australian Klaviyo Certified Partner specializing in email marketing, SMS automation, and retention strategies for Shopify stores.

agency · United States

Leading DTC growth agency using Klaviyo for advanced email and SMS retention marketing for high-growth e-commerce brands.

agency · Dallas, TX, USA

Homestead Studio is a growth-focused Klaviyo agency for eCommerce brands, specializing in email strategy, automation builds, and SMS marketing to drive sustainable revenue growth.

freelancer · Sydney, Australia

Brynley King is one of Australia's leading Klaviyo Expert freelancers, developing and implementing advanced email & SMS marketing strategies for eCommerce brands as a certified Klaviyo specialist.

agency · London, UK

IMPRO is a certified Klaviyo partner and email & SMS marketing agency helping eCommerce brands of all sizes boost ROI through strategic flows, campaigns, and deliverability optimization.

agency · Los Angeles, CA, USA

DIDO Agency is a full-service email and SMS marketing agency focused on eCommerce brands. They handle copy, design, analytics, and Klaviyo automation to drive retention and revenue.

agency · Singapore

Chronos Agency is a globally recognized eCommerce email and SMS marketing agency and Klaviyo Elite Partner, helping brands maximize retention and lifetime value through lifecycle marketing.

agency · London, UK

YOCTO provides world-class CRM strategy for rapid-growth DTC e-commerce brands, helping them scale with Klaviyo email & SMS, data-driven segmentation, and lifecycle marketing.

agency · London, UK

AMB Interactive is a digital marketing agency specialising in email and SMS marketing, driving growth through smart, data-led strategies and Klaviyo automation for eCommerce brands.

agency · Austin, TX, USA

Lilo Social is an eCommerce growth marketing agency scaling DTC brands with full-funnel strategies including paid ads, email, SMS, UGC, and CRO. Trusted Klaviyo partner for top DTC brands.

agency · Brisbane, Australia

Andzen is an award-winning global Klaviyo Master Elite Partner agency specialising in retention marketing, lifecycle CRM, and email & SMS automation for ecommerce brands across Australia, the US, and UK.

agency · New York, NY, USA

Tinuiti is the largest independent full-funnel performance marketing agency in the US, offering end-to-end email, SMS, and lifecycle marketing services powered by Klaviyo.