AGENCY
Email marketing remains the highest-ROI channel available to Shopify brands — returning an average of $36–$42 for every dollar spent when managed with precision. But in 2026, winning with email requires far more than sending promotional campaigns. With Klaviyo’s AI-powered segmentation, the rise of SMS integration, and growing pressure on customer acquisition costs forcing brands to maximize lifetime value, the difference between a great Shopify email marketing agency and an average one has never been more consequential.
│Agency | │Best For | │Core Expertise | │Pricing |
Flowium | DTC & Shopify brands scaling automation | Klaviyo flows, SMS, segmentation | From $2,500/mo |
Chronos Agency | eCommerce brands with APAC presence | Lifecycle email, SMS, push notifications | From $3,000/mo |
Fuel Made | Premium Shopify & Shopify Plus brands | Klaviyo email, SMS, Shopify dev, CRO | From $3,500/mo |
Andzen | DTC brands building loyalty & LTV | Klaviyo automation, loyalty, segmentation | From $2,000/mo |
Forge Digital Marketing | Shopify brands turning email into top revenue channel | Klaviyo flows, A/B testing, omnichannel | From $1,500/mo |
Sticky Digital | Subscription & replenishment DTC brands | Email, SMS, RFM segmentation, LTV strategy | From $1,000/mo |
InboxArmy | Mid-market & enterprise multi-industry brands | Full-service email, Klaviyo, automation, templates | From $1,500/mo |
Hustler Marketing | High-volume Shopify stores with large lists | Email, SMS, retention, lifecycle campaigns | From $1,200/mo |
SmartSites | eCommerce & DTC brands needing full-stack marketing | Email campaigns, automation, paid ads, SEO | From $1,000/mo |
Avex Designs | Mid-market brands where visual identity drives conversion | Klaviyo email, creative design, brand strategy | From $2,000/mo |
This guide evaluates the 10 best Shopify email marketing agencies operating in 2026, rated across five dimensions: Services & Expertise, Affordability, Reviews & Reputation, Case Studies & Results, and Communication & Transparency. Whether you are a DTC brand scaling repeat purchases, a subscription business building customer lifetime value, or an eCommerce store recovering abandoned carts at scale, this list helps you find the right partner.
| Best for: DTC eCommerce brands, Shopify stores, and growth-stage companies that need technically precise Klaviyo lifecycle automation, segmentation strategy, and hands-on email management to increase repeat revenue.
Flowium, founded in 2017 and headquartered in Staten Island, New York, has established itself as one of the most technically rigorous Klaviyo-certified email marketing agencies operating in the eCommerce space. As a Klaviyo Master Elite Partner — the highest tier of Klaviyo certification available — Flowium has built its reputation on a single premise: most Shopify brands significantly underperform on email because their flow architecture, segmentation logic, and creative execution are misaligned with how customers actually behave. Their team of dedicated Klaviyo specialists builds lifecycle programs from the ground up, starting with data architecture and working through every trigger, segment, and campaign until the email channel consistently generates 30–40% of total store revenue. Beyond client execution, Flowium runs one of the most popular Klaviyo education resources in the market — a YouTube channel with step-by-step strategy content consumed by tens of thousands of Shopify merchants and marketers globally.
Services & Expertise
Full Klaviyo lifecycle management: welcome series, abandoned cart, post-purchase, browse abandonment, win-back, SMS integration, list segmentation, campaign strategy, and deliverability management. One of the deepest Klaviyo technical teams available.
Affordability
Mid-range pricing. Retainers typically start at $2,500/month depending on list size and scope. Strong ROI potential for brands generating meaningful eCommerce revenue. Not designed for brands just starting email programs.
Reviews & Reputation
4.9/5 average across verified Clutch and Google reviews. Klaviyo Master Elite Partner status — the highest platform tier available. Frequently ranked as a top email agency in independent roundups and Klaviyo’s own partner directory.
Case Studies & Results
DTC apparel brands report 35–50% of total store revenue attributable to Klaviyo after full flow rebuilds. Beauty and home goods clients document 3–5x email revenue increases within 90 days of engagement.
Communication & Transparency
Dedicated account managers, bi-weekly strategy calls, and campaign performance dashboards. Clients consistently praise proactive optimization recommendations and fast creative turnaround.
| Best for: Global eCommerce brands, Shopify stores with APAC market presence, and DTC companies that need creative-first lifecycle marketing combining email, SMS, and push notifications under one coordinated retention strategy.
Chronos Agency, founded in 2017 and headquartered in Singapore with a distributed global team, has built one of the most recognized email and lifecycle marketing brands in the eCommerce world. As a Klaviyo Elite Master Partner, Chronos has worked with hundreds of Shopify brands across apparel, lifestyle, beauty, and home goods, generating hundreds of millions of dollars in attributed email revenue. Their philosophy centers on creative storytelling: rather than treating email as a transactional channel, Chronos designs campaigns that build brand narratives, strengthen customer relationships, and drive repeat purchases through emotional connection rather than discount dependency. This approach has proven particularly effective for brands with strong visual identities who need their email program to feel like a seamless extension of their brand experience. Their multi-channel capability — spanning Klaviyo email, SMS, and push notifications — allows clients to coordinate retention messaging across every owned channel simultaneously.
Services & Expertise
Klaviyo email strategy, flow architecture, campaign management, SMS marketing, push notification integration, creative copywriting, brand storytelling, and customer lifecycle mapping. Particularly strong in multi-channel retention coordination.
Affordability
Mid-market pricing. Retainers typically begin at $3,000/month for full email management. Multi-channel packages that include SMS and push are priced higher based on scope and list size.
Reviews & Reputation
Klaviyo Elite Master Partner status. Strong Clutch profile with consistent 4.8–5.0/5 ratings from apparel and lifestyle brands. Widely cited in 2026 Klaviyo agency roundups as a top creative retention agency globally.
Case Studies & Results
Apparel brands report 40–60% lift in email revenue within six months through creative flow rebuilds. Beauty brands document post-purchase sequence improvements that reduce churn by 25–35%. Lifestyle clients achieve 30–50% increases in customer lifetime value.
Communication & Transparency
Dedicated strategy leads, monthly performance reviews, and creative briefs presented for client approval. Clients cite storytelling quality and brand alignment as the defining differentiators in working with Chronos.
| Best for: Premium Shopify and Shopify Plus brands that need a rare combination of senior-level Klaviyo strategy, high-quality creative execution, and custom Shopify development under one team — particularly those where email must feel editorial, not promotional.
Fuel Made, founded in 1999 and headquartered in Colbert, Washington, brings over two decades of eCommerce expertise to Shopify email marketing — a depth of institutional knowledge that almost no other email agency can match. As both a Klaviyo Professional Partner and a Shopify Plus Partner, Fuel Made sits at the intersection of lifecycle strategy and technical platform execution. Their senior-only team model means clients never work with junior account managers: every email strategy, flow build, and creative decision is driven by specialists with years of Shopify-specific experience. What distinguishes Fuel Made from purely execution-focused agencies is their CRO integration — email campaigns are built in coordination with landing page strategy, product detail page optimization, and conversion analysis, ensuring that every click delivers to an experience designed to convert. For premium brands where email must reflect editorial quality, Fuel Made’s creative production is among the best in the market.
Services & Expertise
Klaviyo email marketing, SMS campaigns, lifecycle strategy, creative design and copywriting, Shopify custom development, CRO consulting, and growth optimization. Rare full-stack capability across marketing and development.
Affordability
Mid-to-upper tier pricing. Engagements typically begin at $3,500/month reflecting the senior-only team model and integrated development capability. Strong ROI for premium brands with meaningful existing email lists.
Reviews & Reputation
Klaviyo Professional Partner and Shopify Plus Partner. Clutch Top Agency recognition with consistently high client satisfaction ratings. Frequently cited in 2026 Shopify-specific email agency rankings for premium creative quality.
Case Studies & Results
Premium lifestyle brands report 45–70% revenue increases from email within 120 days of engagement. Shopify Plus clients document conversion rate improvements on post-click landing experiences through integrated CRO work. Fashion clients see LTV improvements of 30–50% through lifecycle optimization.
Communication & Transparency
Senior strategists on every account, monthly executive reviews, and CRO-linked reporting that connects email performance to on-site conversion data. Clients consistently describe the relationship as a true strategic partnership.
| Best for: DTC eCommerce brands building long-term customer relationships through loyalty programs, subscription retention, and advanced Klaviyo automation — particularly those in the Australian, New Zealand, and Southeast Asian markets seeking regional expertise.
Andzen, founded in 2014 and headquartered in Brisbane, Australia, has spent over a decade mastering a discipline most email agencies treat as secondary: customer lifecycle strategy that builds genuine brand loyalty rather than discount-driven repeat purchases. As a Klaviyo Elite Master Partner, Andzen integrates Klaviyo with loyalty platforms including Smile.io and Yotpo, subscription management tools, and advanced segmentation frameworks to create retention systems that compound over time. Their core philosophy — that the difference between average email agencies and true lifecycle specialists is understanding how customers actually progress through a relationship with a brand — has driven consistent results for DTC brands across apparel, health and wellness, and home goods. For Shopify brands with established customer bases who want to maximize the value of those relationships rather than simply acquire new ones, Andzen delivers one of the most structured loyalty-first approaches available in the market.
Services & Expertise
Klaviyo automation and flow architecture, campaign management, loyalty program integration (Smile.io, Yotpo), subscription retention, advanced RFM segmentation, creative design, and customer journey mapping.
Affordability
Mid-range pricing starting around $2,000/month. Particular value for brands with existing loyalty programs or subscription models where integrated retention strategy delivers compounding returns.
Reviews & Reputation
Klaviyo Elite Master Partner. Strong regional reputation in ANZ eCommerce market and growing international recognition. Clients consistently cite open rates, click rates, and revenue-per-recipient benchmarks that exceed industry averages.
Case Studies & Results
Health and wellness brands report 35–55% repeat purchase rate improvements through loyalty-integrated email programs. Subscription brands document churn reductions of 20–30% through precision post-purchase sequences. DTC apparel clients see LTV increases of 40–60% within 12 months.
Communication & Transparency
Structured monthly reporting tied to loyalty and lifecycle KPIs, dedicated account managers, and quarterly strategy reviews. Clients describe communication as consistently clear, data-driven, and aligned with long-term business goals.
| Best for: Shopify brands that want a focused, lean Klaviyo partner capable of rapidly auditing existing programs, rebuilding flows, and turning email into their highest-ROI revenue channel — without the overhead of a large agency.
Forge Digital Marketing, headquartered in Naperville, Illinois with remote hubs in Brazil, Canada, and Spain, has built a reputation as one of the most results-driven Klaviyo partners in the Shopify ecosystem. As both a Klaviyo Certified partner and a Shopify Partner, Forge Digital operates on a philosophy of radical simplicity: audit what’s broken, rebuild what’s underperforming, test relentlessly, and report on revenue impact — nothing else. Their lean agency model means clients receive focused senior attention rather than being handed off to account coordinators, and their sprint-based campaign management keeps strategy aligned with live performance data rather than quarterly review cycles. Forge Digital has developed a particularly strong position in 2026 as an agency that can take an underperforming Klaviyo account from stagnation to 30–40% of total store revenue within a defined engagement timeline — a specific, measurable promise most email agencies avoid making.
Services & Expertise
Klaviyo audit and rebuild, welcome and abandonment flow architecture, campaign strategy and execution, A/B testing programs, SMS integration, omnichannel coordination, and revenue-linked analytics reporting.
Affordability
Accessible pricing. Retainers start around $1,500/month making Forge Digital one of the more accessible specialist Klaviyo partners on this list. Strong fit for growth-stage Shopify brands that need genuine expertise without enterprise-level fees.
Reviews & Reputation
Klaviyo Certified and Shopify Partner. Growing Clutch profile with strong satisfaction ratings. Consistently cited in 2026 Klaviyo agency roundups as a top choice for Shopify-focused email programs. Educational content widely consumed by DTC founder community.
Case Studies & Results
DTC brands report email revenue rising from under 15% to 35–40% of total store revenue within 90 days of flow rebuilds. A/B testing programs drive consistent 20–35% improvements in campaign click-through rates. Omnichannel programs combining email and SMS outperform email-only programs by 2–3x on recovery metrics.
Communication & Transparency
Sprint-based strategy reviews keep clients informed of every optimization decision and its revenue rationale. Clients describe Forge as a consulting partner that explains every action rather than simply executing and reporting.
| Best for: Mid-market DTC and Shopify brands — particularly those with subscription or replenishable products — that need a retention-first agency with deep RFM expertise, lifecycle architecture, and a track record of driving 30–40% of total store revenue from email and SMS.
Sticky Digital has carved a distinct and underserved position in the Shopify email marketing space: retention-first lifecycle management for DTC brands where repeat purchase behavior, subscription health, and customer lifetime value are the primary business metrics. As both a Klaviyo Certified partner and Yotpo and Attentive certified agency, Sticky Digital builds retention ecosystems that coordinate email, SMS, loyalty programs, and onsite experiences into a single cohesive system. Their RFM (Recency, Frequency, Monetary) segmentation framework allows clients to identify and respond to customer behavior at a granularity that generic agencies simply cannot replicate. Voted the #1 Retention Marketing Agency in North America in both 2023 and 2024, and backed by a documented backlink from Klaviyo’s own site — a meaningful signal of platform-level recognition — Sticky Digital has consistently demonstrated that email and SMS, when managed with retention-first discipline, can generate 30–40% of total store revenue on a predictable monthly basis.
Services & Expertise
Klaviyo email automation, SMS campaigns (Attentive), RFM segmentation, loyalty program integration (Yotpo), subscription retention strategy, post-purchase sequence architecture, and LTV optimization.
Affordability
Accessible entry point. Custom pricing following a complimentary retention audit, starting from $1,000/month. One of the strongest value propositions on this list for subscription and replenishment brands where retention ROI compounds monthly.
Reviews & Reputation
Voted #1 Retention Marketing Agency in North America (2023, 2024). Klaviyo, Yotpo, and Attentive certified. 4.9/5 across Google, Clutch, and DesignRush. Klaviyo site backlink signals strong platform-level recognition.
Case Studies & Results
Subscription brands scaled from $1M to $25M+ in revenue with email and SMS driving a consistent 30–40% of monthly revenue. DTC replenishment brands document churn reductions of 25–40% through precision post-purchase and win-back flows. LTV improvements of 50–80% achieved for health and wellness clients within 12 months.
Communication & Transparency
Clear, pipeline-linked reporting tied directly to retention metrics and revenue outcomes. Clients benefit from structured bi-weekly updates, full visibility into segmentation logic, and ongoing optimization rationale.
| Best for: Mid-market and enterprise Shopify brands across multiple industries that need a full-service email marketing partner with the depth and scale to manage high-volume sending, complex automation, and advanced deliverability management.
InboxArmy, founded in 2016 and operating as a fully remote global agency, has built one of the broadest email marketing capabilities in the market — serving clients across eCommerce, SaaS, financial services, healthcare, and over 25 additional industries. For Shopify brands, InboxArmy brings a full-service model that extends well beyond Klaviyo campaign management: their team of 60+ specialists covers email strategy, template design, automation engineering, deliverability consulting, and ESP migration, giving clients a single partner capable of managing every dimension of email channel performance. Their enterprise-grade deliverability expertise — including dedicated IP management, authentication protocol setup, and inbox placement monitoring — is a particular differentiator for high-volume Shopify brands whose deliverability directly determines revenue outcomes. As a Klaviyo partner with deep cross-platform expertise spanning HubSpot, Salesforce Marketing Cloud, Mailchimp, and others, InboxArmy can also manage complex migrations for brands transitioning to Klaviyo from legacy platforms.
Services & Expertise
Full-service Klaviyo management, email template design, automation architecture, deliverability consulting, ESP migration, A/B testing, campaign strategy, and multi-industry lifecycle marketing. One of the deepest capability stacks available.
Affordability
Mid-range pricing starting around $1,500/month for full email management. Scale-based pricing for high-volume and enterprise clients. Strong value for brands that need multi-service depth from a single partner.
Reviews & Reputation
Strong Clutch profile with 4.8/5 average across 200+ verified reviews. Recognized across multiple industry award lists for email excellence. Widely cited as a top choice for enterprise and high-volume email programs requiring deliverability expertise.
Case Studies & Results
High-volume eCommerce brands achieve 20–40% inbox placement improvements through deliverability audits. Shopify brands document 2–4x email revenue growth within six months of full program rebuilds. ESP migrations completed without revenue disruption for enterprise-tier clients.
Communication & Transparency
Dedicated account managers, weekly performance reporting, and deliverability dashboards. Clients across industries consistently praise the depth of strategic guidance and proactive communication on performance changes.
| Best for: High-volume Shopify stores with large email lists that need a proven, playbook-driven email and SMS agency capable of managing complex list segmentation, high-frequency sending, and consistent revenue attribution at scale.
Hustler Marketing, founded in 2016, has spent nearly a decade doing one thing: building and scaling email and SMS programs for eCommerce brands that need consistent, predictable revenue from their owned marketing channels. With over 450 brands served and more than $105 million in email-attributed revenue generated for clients, Hustler Marketing brings a scale of execution experience that most boutique email agencies simply cannot match. Their playbook-driven methodology — refined across hundreds of campaigns in apparel, health and wellness, beauty, food and beverage, and home goods — allows them to deploy proven frameworks quickly and iterate toward client-specific performance benchmarks rather than starting from scratch on every engagement. For high-volume Shopify stores with established email lists, Hustler Marketing’s combination of strategic depth and operational scale is one of the strongest value propositions available in the market.
Services & Expertise
Klaviyo email strategy and management, SMS campaigns, list segmentation and hygiene, flow architecture, campaign copywriting and design, A/B testing, and retention-focused lifecycle marketing.
Affordability
Accessible mid-range pricing starting around $1,200/month. One of the better value options for Shopify brands with large lists that need proven execution at scale without enterprise-level fees.
Reviews & Reputation
Strong industry reputation built on $105M+ in documented client email revenue. Clutch reviews averaging 4.8/5 with consistent praise for team responsiveness and campaign quality. Frequently cited in 2026 email agency rankings for high-volume Shopify performance.
Case Studies & Results
Beauty brands report 3–4x email revenue increases within 90 days through list segmentation and flow rebuilds. Health and wellness clients see 40–60% improvements in campaign open and click rates through creative optimization. High-volume stores achieve consistent 25–35% revenue attribution from email within six months.
Communication & Transparency
Weekly reporting cadences, dedicated account managers, and campaign-level performance transparency. Clients consistently describe Hustler Marketing as highly responsive and operationally dependable — particularly valuable for high-frequency sending programs.
| Best for: eCommerce brands, DTC companies, and multi-location businesses that need expert Shopify email marketing paired with broader digital marketing capabilities — including paid media, SEO, and web design — under one Google Premier Partner agency.
SmartSites, founded in 2011 in Paramus, New Jersey, is a Google Premier Partner recognized for delivering strong performance across the full digital marketing stack. Within Shopify email marketing, SmartSites brings a differentiated capability that most specialized email agencies cannot offer: true cross-channel integration where email campaigns are coordinated with paid search, paid social, and SEO to create a unified customer experience across every touchpoint. Their 200+ person team includes dedicated email marketing specialists who build and manage Klaviyo lifecycle programs alongside paid media teams managing Google and Meta campaigns — giving clients the ability to analyze how email interacts with every other channel in their marketing mix. SmartSites has generated over $100 million in client revenue and maintains one of the most consistently praised client review profiles in the digital marketing industry, with a 100% recommendation rate on Clutch across 300+ verified reviews.
Services & Expertise
Shopify email marketing, Klaviyo automation and campaigns, SMS integration, paid search, paid social, Google Shopping, web design, SEO, and full-funnel analytics. Genuinely full-service with email as a core offering.
Affordability
Accessible pricing with entry points around $1,000/month for email marketing services. Google Premier Partner-level quality at competitive rates. Full-service bundles deliver strong cross-channel value for growing Shopify brands.
Reviews & Reputation
300+ verified Clutch reviews with a 100% recommendation rate. Google Premier Partner. Named a top digital marketing agency by Forbes and consistently recognized across industry ranking lists for multi-channel performance.
Case Studies & Results
eCommerce clients report 30–50% email revenue increases through Klaviyo flow architecture and campaign optimization. Multi-location businesses achieve 40–80% lead volume growth when email is integrated with paid search campaigns. DTC brands document measurable LTV improvements through coordinated cross-channel programs.
Communication & Transparency
Dedicated account managers, weekly performance updates, and custom analytics dashboards. Clients consistently praise SmartSites for responsiveness, transparent reporting, and the strategic value of cross-channel visibility.
| Best for: Mid-market Shopify brands where visual identity, brand experience, and creative excellence are central to conversion — and where email must feel like a premium brand editorial rather than a promotional blast.
Avex Designs, headquartered in New York City, has built one of the most distinctive positioning strategies in the Shopify email marketing space: creative-first lifecycle marketing for brands where aesthetics and brand experience are not secondary considerations but primary revenue drivers. As a Klaviyo Certified partner with deep Shopify expertise, Avex pairs sophisticated email design with technically precise automation architecture — ensuring that beautiful campaigns are also behaviorally intelligent, delivering the right message to the right customer segment at the right moment in their lifecycle. Their team integrates brand strategy, email creative direction, and Klaviyo lifecycle management under a single team, eliminating the misalignment between creative vision and technical execution that plagues brands working with multiple agencies simultaneously. For mid-market Shopify brands scaling quickly in lifestyle, fashion, home goods, and beauty — categories where premium aesthetics materially affect email engagement rates — Avex Designs delivers a rare combination of creative excellence and retention performance.
Services & Expertise
Klaviyo email strategy and management, creative email design, brand-aligned copywriting, flow architecture, list segmentation, SMS integration, and brand identity consulting. Particularly strong in visual creative production aligned with brand guidelines.
Affordability
Mid-range pricing starting around $2,000/month reflecting the premium creative production integrated into every engagement. Strong value for brands in visually competitive categories where email aesthetic directly affects open, click, and conversion rates.
Reviews & Reputation
Klaviyo Certified Partner with strong Clutch and industry recognition for creative email quality. Consistently cited in 2026 Shopify email agency roundups as the top choice for brands where design excellence is a non-negotiable requirement.
Case Studies & Results
Fashion and lifestyle brands report 35–55% increases in email click-through rates following creative redesigns. Home goods clients document 2–3x improvements in post-purchase engagement through brand-aligned sequence rebuilds. Beauty brands achieve 40–60% revenue increases from email within 90 days of full program overhauls.
Communication & Transparency
Brand strategy reviews, creative brief presentations for client approval, and lifecycle performance reporting. Clients describe the relationship as a true creative partnership where brand vision and email performance are treated as inseparable.
Start with Best For — match the description to your business stage, product category, and primary retention goal before anything else.
Then check Core Expertise against the specific capability you actually need: Klaviyo flow architecture, SMS integration, loyalty program management, creative production, or enterprise deliverability. These are distinct skill sets, and not every agency excels at all of them.
Use Pricing as your floor, not your ceiling — final retainers always depend on list size, sending volume, scope of services, and the maturity of your existing email program. Brands with established lists and strong traffic will see faster ROI than those starting from zero.
Bill Nash is the CMO of Marketing LTB with over a decade of experience, he has driven growth for Fortune 500 companies and startups through data-driven campaigns and advanced marketing technologies. He has written over 400 pieces of content about marketing, covering topics like marketing tips, guides, AI in advertising, advanced PPC strategies, conversion optimization, and others.
