For ecommerce brands, Klaviyo is often where retention strategy becomes revenue. But the platform alone will not build better flows, sharper segmentation, stronger campaigns, or cleaner reporting. The right Klaviyo agency can help you turn customer data into timely messages, improve repeat purchases, recover more abandoned carts, and build lifecycle programs that grow with your store.
We compiled this directory of Klaviyo agencies worth considering in 2026 – from boutique retention studios to full-service ecommerce growth agencies, email and SMS specialists, migration experts, and teams focused on Shopify, DTC, and subscription brands. Some are best for hands-on execution, some for strategy and audits, and others for brands that need a long-term lifecycle marketing partner.
Use this list to compare agencies by Klaviyo expertise, ecommerce focus, services, industry experience, pricing model, and the type of brand they work best with. Whether you need a fresh Klaviyo setup, advanced flows, campaign management, SMS, deliverability support, or a full retention strategy, this directory should help you shortlist the right partners.
A note on the list: agency teams, Klaviyo partnership status, service packages, and client focus can change over time. We review this directory regularly and welcome corrections, updates, and nominations for agencies that should be included.
A
A-Game Digital
★ Elite Master
United States · Fair Lawn, NJ
Ecommerce retention agency helping brands with Klaviyo email, SMS, lifecycle strategy, and growth marketing.
Ackermann
★ Elite Master
Denmark · Copenhagen
Danish email marketing agency specializing in Klaviyo strategy, newsletters, lead generation, content, and automation.
AMB Interactive
★ Elite Master
United States · New Jersey
Digital marketing and ecommerce agency supporting brands with Klaviyo, retention, paid media, and growth programs.
Andzen
★ Elite Master
Australia · Brisbane
Customer journey and lifecycle CRM agency specializing in Klaviyo, retention marketing, email, SMS, and ecommerce automation.
Arcady Media
★ Elite Master
Canada · Toronto
Retention-focused ecommerce agency providing email, SMS, lifecycle, and loyalty marketing for Shopify brands.
Arctic Leaf
★ Elite Master
United States · Meridian, ID
Digital agency specializing in ecommerce UX, design, development, integrations, and Klaviyo strategy.
Ask Phill
Platinum Master
Netherlands · Amsterdam
Shopify Plus agency helping ecommerce brands with commerce strategy, design, development, and Klaviyo-related lifecycle work.
B
BMO Media
★ Elite Master
United States · Los Angeles, CA
Email and SMS marketing agency focused on ecommerce lifecycle growth and retention.
C
Centric Squared
Platinum Master
United States · Sheridan, WY
Digital marketing agency offering data-driven email automation, CRM, and customer-centric marketing programs for growing businesses.
Chronos Agency
★ Elite Master
Singapore · Singapore
Lifecycle marketing agency for scaling DTC and ecommerce brands, focused on Klaviyo email, SMS, retention, and customer journey programs.
Class A Media
Platinum Master
United States · New York
Ecommerce marketing agency supporting brands with Klaviyo, paid media, creative, and retention-focused growth programs.
Coalition Technologies
Platinum Master
United States · California
Digital marketing and ecommerce agency offering web development, SEO, paid media, email marketing, and Shopify support.
Code
★ Elite Master
Netherlands
Digital commerce agency helping brands with Shopify, ecommerce strategy, and Klaviyo implementation.
Colorz
★ Elite Master
France · Paris
Paris-based full-service digital agency focused on Shopify, CRM, ecommerce performance, and Klaviyo-powered lifecycle marketing.
D
Darkroom
Platinum Master
United States · Los Angeles, CA
Growth agency for ecommerce and consumer brands, covering creative, paid media, lifecycle marketing, and conversion strategy.
Defiant Digital
Platinum Master
Australia · Sydney
Digital marketing agency supporting ecommerce brands with performance marketing, creative, strategy, and Klaviyo-related growth work.
Digital Media Team
Platinum Master
United Kingdom · Manchester
Full-funnel ecommerce marketing agency offering email marketing, paid social, paid search, web development, and Klaviyo services.
Domaine
★ Elite Master
United States · New York
Commerce agency for Shopify and enterprise ecommerce brands, with services across strategy, design, development, and retention.
DRINKS
★ Elite Master
United States · California
Alcohol ecommerce technology and services company with retention marketing capabilities through its Electriq acquisition.
E
e2 Agency
Platinum Master
Australia · Adelaide
Klaviyo email marketing agency for Shopify brands, focused on email, SMS, list growth, campaigns, and ecommerce revenue growth.
ECD Digital Strategy
Platinum Master
Canada
Email and SMS marketing agency helping ecommerce brands with Klaviyo strategy, lifecycle automation, segmentation, and retention growth.
eHouse
★ Elite Master
United States · Charleston, SC
Shopify and ecommerce agency working across commerce strategy, design, development, and lifecycle marketing.
ElliotDigital
Platinum Master
United Kingdom · London
Ecommerce agency supporting brands with Klaviyo email marketing, Shopify services, retention strategy, and digital growth.
Email Experts
Platinum Master
Australia · Melbourne
Klaviyo email marketing agency helping businesses streamline email marketing, automation, and customer communication programs.
Enchant Agency
Platinum Master
United Kingdom · London
Email marketing agency specializing in CRM, lifecycle automation, Klaviyo strategy, campaigns, and customer retention.
Evocative Media
Platinum Master
Australia · Sydney
Ecommerce growth marketing agency helping DTC brands with paid ads, email marketing, Klaviyo, and multi-channel growth.
F
Flatline Agency
Platinum Master
Netherlands · Amsterdam
Digital agency combining ecommerce development, integrations, marketing automation, Klaviyo, and technical growth support.
Flowium
★ Elite Master
United States · Staten Island, NY
Email and SMS marketing agency for ecommerce brands, with a strong focus on Klaviyo lifecycle automation, campaigns, and retention strategy.
Fuel Made
★ Elite Master
United States · Seattle, WA
Shopify Plus and Klaviyo agency specializing in ecommerce builds, email/SMS lifecycle marketing, and conversion-focused retention work.
G
Get Better
★ Elite Master
United Kingdom
CRM and retention agency helping ecommerce brands improve Klaviyo email, SMS, lifecycle marketing, and customer retention.
GoodKarma
Platinum Master
Netherlands · Amsterdam
Ecommerce and retention agency helping brands with email marketing, Klaviyo, automation, and customer lifecycle optimization.
GR0
★ Elite Master
United States · Los Angeles, CA
Digital marketing agency offering ecommerce growth services across SEO, paid media, creative, and retention.
Growth Gurus
★ Elite Master
Australia · Sydney
Retention marketing agency helping ecommerce brands scale through Klaviyo email, SMS, loyalty, automation, and customer-first lifecycle strategy.
Growth Horizon
Platinum Master
Netherlands · Assen
Digital strategy and ecommerce growth agency supporting brands with Klaviyo, technology roadmapping, integrations, and lifecycle marketing.
H
Hawke Media
Platinum Master
United States · Santa Monica, CA
Outsourced CMO and marketing agency supporting ecommerce brands with lifecycle marketing, media, creative, strategy, and analytics.
Hidden Tempo
Platinum Master
United States · New York
Email and lifecycle marketing agency supporting ecommerce brands with Klaviyo strategy, automation, campaigns, and retention work.
Homestead Studio
★ Elite Master
United States · Appleton, WI
Growth and creative agency for ecommerce brands, covering acquisition, retention, email/SMS, creative, and lifecycle strategy.
Hustler Marketing
★ Elite Master
United States · Jackson, WY
Retention marketing agency for ecommerce brands, focused on Klaviyo email, SMS, strategy, design, copywriting, and campaign management.
I
IM Digital
★ Elite Master
United States · Boca Raton, FL
Digital commerce agency supporting ecommerce brands with strategy, development, optimization, and Klaviyo-driven retention work.
J
J7 Media
Platinum Master
Canada
Performance marketing agency helping ecommerce brands with paid media, creative, email marketing, and growth strategy.
Juka by ReveMedia
Platinum Master
France · Paris
Email and CRM agency helping ecommerce brands with Klaviyo, automation, campaign strategy, and customer retention.
K
Kubix
Platinum Master
United Kingdom · Birmingham
Shopify Plus and ecommerce agency supporting brands with commerce strategy, design, development, and email marketing.
L
Lilo Social
★ Elite Master
United States · Brooklyn, NY
Full-funnel ecommerce growth agency combining email/SMS retention with paid social, paid search, creative, and landing page work.
LION Digital
★ Elite Master
Australia · Melbourne
Ecommerce marketing agency supporting brands with Klaviyo migration, setup, deliverability, automation, and long-term email channel growth.
Luck & Co
★ Elite Master
United States · San Francisco, CA
Retention and growth agency supporting ecommerce brands with Klaviyo strategy, lifecycle marketing, and email/SMS programs.
Lunar Solar Group
★ Elite Master
United States · New York
Ecommerce growth agency working across paid media, retention, creative, and lifecycle marketing.
M
Magnet Monster
Platinum Master
United Kingdom · Manchester
Retention marketing agency focused on Klaviyo email, SMS, WhatsApp, direct mail, zero-party data, and lifecycle strategy.
mailmeisters
★ Elite Master
Netherlands
Email marketing agency focused on ecommerce retention, Klaviyo implementation, automation, and campaign optimization.
MAILODY GmbH
★ Elite Master
Germany
DACH-focused email marketing agency for ecommerce brands, specializing in Klaviyo, newsletters, WhatsApp, print mailings, and customer data platform work.
Medito Digital
Platinum Master
United Kingdom · London
Ecommerce agency supporting Shopify brands with Klaviyo, paid media, creative, retention marketing, and digital growth.
Meister Lampe und Freunde GmbH
Platinum Master
Germany · Berlin
Digital agency supporting ecommerce brands with Shopify, Klaviyo, performance marketing, development, and digital strategy.
Mineral.io
★ Elite Master
United States · New York
Full-service retention marketing agency helping DTC brands with email strategy, Klaviyo campaigns, lifecycle automation, deliverability, and segmentation.
N
Newfive
Platinum Master
Netherlands · Nijmegen
Ecommerce agency helping brands with Shopify, Klaviyo, email marketing, conversion optimization, and digital commerce growth.
NOOS
Platinum Master
Sweden · Stockholm
Digital strategy and ecommerce agency supporting brands with technology roadmapping, Klaviyo, integrations, and marketing operations.
Northern Commerce
★ Elite Master
Canada · London, ON
Digital commerce agency supporting retail and ecommerce brands with platform implementation, integrations, performance, and Klaviyo marketing work.
Novicell
Platinum Master
Denmark · Aarhus
Digital consultancy helping brands with ecommerce, strategy, data, performance marketing, technology, and customer experience.
O
O2 Commerce
Platinum Master
Canada · Montréal
Commerce agency supporting B2B and B2C brands with ecommerce platforms, integrations, strategy, and digital growth.
OuterBox
Platinum Master
United States · Akron, OH
Digital marketing and ecommerce agency offering Klaviyo email/SMS services, SEO, paid media, web design, and development.
P
PAASE
★ Elite Master
United Kingdom · Milton Keynes
Klaviyo-focused CRM and retention agency for ecommerce brands, and one of the first agencies to reach Klaviyo’s Elite Master tier.
Pilothouse Digital
Platinum Master
Canada · Victoria
Performance marketing agency helping ecommerce brands with paid acquisition, creative, email marketing, and revenue growth.
Polaris Growth
★ Elite Master
Netherlands · The Hague
Ecommerce growth agency focused on Klaviyo, customer lifetime value, conversion optimization, automation, and data-led retention.
Power Digital
★ Elite Master
United States · San Diego, CA
Growth marketing agency offering ecommerce services across paid media, SEO, creative, analytics, lifecycle, and Klaviyo retention programs.
R
Retention Commerce
Platinum Master
United States · Los Angeles, CA
Retention marketing agency focused on email, SMS, customer lifecycle automation, and ecommerce revenue growth.
Reynolds International Marketing AB
Platinum Master
Sweden · Skövde
Marketing agency supporting ecommerce brands with Klaviyo, email marketing, automation, and international growth programs.
Rügamer & Steiner Consulting GmbH
Platinum Master
Germany · Düsseldorf
Consulting agency helping ecommerce and retail brands with CRM, Klaviyo, customer lifecycle strategy, and digital growth.
S
s360
★ Elite Master
Denmark
Digital marketing agency helping brands activate first-party data, ecommerce performance, CRM, and Klaviyo programs.
Scale Beyond
Platinum Master
United Kingdom · Manchester
Email marketing agency helping ecommerce brands with Klaviyo implementation, migration, flows, campaigns, and lifecycle optimization.
Scope 16 Marketing
Platinum Master
United States · New York
Email and SMS marketing agency helping ecommerce brands with Klaviyo strategy, flows, campaigns, and retention.
SmartBug Media
★ Elite Master
United States · Newport Beach, CA
Full-service digital marketing agency offering Klaviyo email/SMS strategy, ecommerce growth, inbound marketing, revenue operations, and creative services.
Structured Agency
Platinum Master
United States
Growth agency helping ecommerce brands with paid media, creative, email/SMS, lifecycle marketing, and performance strategy.
T
The Dispatch Agency
Platinum Master
Canada
Email marketing agency supporting ecommerce brands with Klaviyo implementation, campaign production, automation, and CRM operations.
The Orchard Agency
Platinum Master
Australia · Melbourne
Full-service email and SMS marketing agency for ecommerce brands, specializing in Klaviyo automation, campaigns, design, strategy, and reporting.
The Thoughtful Agency
Platinum Master
Australia · Sydney
Strategic ecommerce growth agency supporting brands with performance marketing, email marketing, Klaviyo, and customer journey work.
The Working Party
★ Elite Master
Australia · Melbourne
Shopify and ecommerce agency for Australian and New Zealand retailers, focused on strategy, design, engineering, optimization, and Klaviyo.
ThinkRenegade
Platinum Master
Canada · Toronto
Ecommerce growth agency supporting brands with paid media, retention marketing, creative, and digital strategy.
Tinuiti
★ Elite Master
United States · New York
Independent performance marketing agency supporting commerce brands with media, creative, analytics, marketplace, and lifecycle marketing.
Titan Marketing
Platinum Master
United Kingdom · London
Ecommerce marketing agency supporting Shopify brands with Klaviyo, paid media, creative, and retention growth.
U
UN/COMMON
★ Elite Master
United States · Philadelphia, PA
Ecommerce agency working across Shopify, strategy, design, development, and email/SMS personalization.
Underground Ecom
★ Elite Master
United Kingdom · London
Retention and CRM agency for ecommerce brands, focused on Klaviyo email, SMS, lifecycle strategy, and large-scale CRM infrastructure.
V
VALIX ltd
★ Elite Master
United Kingdom · London
Lifecycle marketing and automation agency helping mid-market and enterprise brands with Klaviyo, email personalization, and retention strategy.
W
Webmefy
Platinum Master
Spain · Madrid
Shopify Plus and Klaviyo agency helping ecommerce brands with strategy, development, implementation, and digital growth.
WeMailYourBrand
Platinum Master
Germany · Münster
Email marketing agency supporting ecommerce brands with Klaviyo, campaign production, automation, and retention programs.
Y
YOCTO
★ Elite Master
Cyprus · Nicosia
Klaviyo and Shopify-focused agency working with high-growth ecommerce brands on email, SMS, automation, segmentation, and lifecycle strategy.
Z
Zettler Digital
★ Elite Master
United States · New Jersey
Digital marketing agency focused on email/SMS, advertising, ecommerce growth, and retention.
Nominate · Suggest · Connect
Know someone who should
be on this list?
This directory grows with the community. If you know an email marketing agency worth following — or you’re one yourself — let us know. We review all submissions and update the list regularly.
FAQ
How were these 100 email marketing agencies selected?
The list was compiled by the Bouncer team based on industry impact, community presence, and contributions to email marketing knowledge. We weighted the list toward agencies who actively share their thinking – through writing, speaking, podcasts, or community involvement – rather than purely by job title or company size. 100 is an editorial constraint, not a complete map of the field. There are talented agencies we know we missed, and many more we haven’t yet discovered. The nomination form exists exactly for this reason.
Can I nominate my agency or someone else?
Yes. Use the “Submit via email” button above the FAQ to send us a nomination. Include the person’s name, role, website or LinkedIn, and a short note on why they belong on the list. We review every submission and update the directory regularly. Self-nominations are welcome.
How often is the list updated?
We aim to refresh the directory at least once per quarter; adding new nominations, removing entries when someone has clearly moved out of the email industry, and updating roles when we’re aware of changes. If you spot something out of date, the same nomination email above is the fastest way to flag it.
