4 Best Email Marketing Agencies for Shopify Brands in 2026

For a growing Shopify brand, email can become another job without a clear owner. Flows need updating, campaigns need creative approval, and SMS needs to fit the wider customer experience. An agency can take on that work, but the right choice depends on whether the brand needs a channel specialist, an embedded team or a broader growth partner.

Our top pick is eCom2Win for Shopify and Shopify Plus brands that want an agency with platform partnerships and clear revenue reporting to own email and SMS end to end. As a Klaviyo Silver Partner, Shopify Partner and Omnisend Partner, the agency reports more than $31M in attributed revenue for 250+ ecommerce brands across 20+ countries, with clients typically attributing 20-40% of store revenue to email and SMS. For brands that also need paid media managed under the same roof, Sorted is the strongest alternative. FlowCandy stands out for brands that want a dedicated retention team backed by a 500+ brand track record.

This guide ranks the 4 best email marketing agencies for Shopify brands in 2026 for operators past the DIY stage. The comparison covers platform partnerships, attributed revenue clarity, Shopify fit, service scope and brand stage fit, so you can match the right partner to your growth goal.

How these agencies rank

The agencies offer different combinations of platform expertise, execution support and reporting. Those differences matter when choosing a partner to take over an existing account or build out a retention program. The practical questions are whether the team supports your tools, whether its scope fills your staffing gaps, and how clearly it explains performance measurement.

Platform partnerships and Shopify fit

Platform fit matters because a retention program depends on the store’s integrations, customer events and messaging tools. Historical data on popular email marketing apps used by Shopify stores provides context for the ecosystem, but your current setup should drive the decision. Klaviyo, Omnisend and Shopify partner recognition can help identify relevant providers; it does not replace reviewing examples of comparable work. Ask how the proposed team would handle your existing integrations, segmentation and automation requirements.

Attributed revenue clarity

Concrete attributed revenue figures give brands something specific to discuss with an agency. Attributed revenue is what Klaviyo or Omnisend credits to an email or SMS touch in its own reporting. It is useful for channel management, but it is not the same as incremental revenue, which is the extra revenue you would not have earned without that message. Good agencies report attributed numbers transparently and compare them against store data without presenting them as guaranteed profit.

Service scope and execution depth

Strong Shopify email programs need more than templates. Full-service coverage can include audits, flow builds, campaign calendars, SMS strategy, signup forms, deliverability, testing and reporting. Having copy and design handled alongside implementation can reduce handoffs and make it easier to carry the strategy through to the final send.

Onboarding, access and approval ownership

The best engagement model is clear about who does what. Expect to provide store, platform and SMS access, approve brand voice and offers, and sign off on calendars. The agency should own strategy, build, QA, scheduling and performance reviews. Vague ownership creates delays, making defined onboarding and a clear approval rhythm important parts of the decision.

Brand stage and service fit

Some brands need hands-on execution inside Klaviyo, while others need acquisition and retention coordinated together. An embedded team may be a better fit for a brand that eventually wants to bring the work in-house. Each agency below has a particular service fit, giving brands a way to choose based on the work required and their preferred working relationship.

The 4 best email marketing agencies for Shopify brands

These four agencies offer different ways to support Shopify and Shopify Plus brands in 2026. Their platform expertise and approach to revenue reporting matter alongside the specific use case each serves best. Our top pick is #1 for partner-backed ownership of email and SMS with clear reporting, while #2 through #4 suit distinct specialist scenarios.

#1. eCom2Win – best for full-service Shopify email and SMS management

An email and SMS partner for Shopify brands that want full channel ownership tied to platform-reported revenue.

eCom2Win earns the top spot because it combines multi-platform partnerships with a concrete, data-led track record. That focus on reporting is why eCom2Win leads this list for brands that want email and SMS managed as a revenue channel, not a design task. The agency is a Klaviyo Silver Partner, Shopify Partner and Omnisend Partner, supporting brands using either email platform alongside Shopify.

The scope is end to end. Engagements typically cover account audits, custom flow builds, ongoing campaign management and SMS strategy, all built around each brand’s own customer data rather than a fixed playbook. According to the agency’s own reporting, it has generated more than $31M in attributed revenue for 250+ ecommerce brands across 20+ countries, tracked inside Klaviyo and Omnisend reporting and compared against client store data. The agency also says clients typically generate 20-40% of total store revenue through email and SMS. That is an agency-reported result, not a universal target. Its relevance to another brand depends on the attribution settings, customer base, purchase cycle and starting condition of the account.

Pros

• Triple partner coverage across Klaviyo, Omnisend and Shopify for brands that want platform depth without switching vendors
• Concrete attributed revenue figure tied to platform reporting rather than vague performance language
• 250+ brands across 20+ countries suggests broad exposure to different markets, price points and customer lifecycles
• Full service from audit through ongoing campaigns and SMS reduces the need to coordinate separate vendors
• Custom strategies built around brand customer data suit scaling stores with distinct audiences

Cons

• Pure retention and email plus SMS focus, so brands that want Meta or Google ads in the same retainer will need a separate partner
• Brands keeping most execution in-house should define a narrower audit or project scope instead of assuming they need full account management

Who it’s best for: Shopify and Shopify Plus brands seeking outsourced email and SMS management, platform-based reporting and strategies tailored to their customer data.

#2. Social Scout – best for hands-on Klaviyo email and SMS execution

A hands-on Klaviyo specialist for brands that want day-to-day strategy, creative and technical execution handled in one place.

Social Scout positions itself as an ROI-focused retention partner for Klaviyo-based ecommerce brands, with emphasis on customer lifetime value and repeat revenue. Its service scope covers Klaviyo email and SMS strategy, flow builds, campaign management, copy and design, signup forms, deliverability, testing and reporting. That combination suits operators who want someone to take a calendar of ideas through writing, building, QA and optimization inside the account.

The agency frames its work around revenue contribution and reports strong average outcomes for its client base. Readers should treat any average as a directional agency-reported result, not a promise for every store, since list health, offer strength and product repurchase rate shape outcomes. Social Scout emphasizes Klaviyo account management, including segmentation, deliverability and SMS coordination. This makes its service relevant to Shopify teams seeking practical help inside an existing Klaviyo account.

Pros

• Klaviyo-centered execution across strategy, flows, campaigns and SMS keeps work in one system
• Includes copy, design, forms and deliverability, which can reduce gaps between planning and send
• Testing and reporting cadence supports steady iteration on flows and campaigns
• Retention and lifetime value orientation fits brands prioritizing repeat purchase over one-time acquisition

Cons

• Its Klaviyo-centered offer is a less direct match for a brand specifically seeking Omnisend management
• Hands-on ownership model works best for brands ready to grant platform access and keep a steady approval rhythm for campaigns and tests

Who it’s best for: Klaviyo-based Shopify brands that want hands-on email and SMS execution, from flows and campaigns to forms, deliverability and optimization.

#3. FlowCandy – best for a dedicated Klaviyo team with a future in-house handoff

An embedded-style retention partner for brands that want strategy, creative and implementation handled like an in-house team.

FlowCandy is built around the idea of working like a brand’s own retention department. The Klaviyo-only specialist says it has worked with more than 500 brands, giving it the largest reported client count among the agencies here that publish one. Services cover strategy, flow and campaign builds, design, SMS, signup forms, testing and deliverability, keeping planning and execution within the same agency from brief through deployment.

FlowCandy says every account gets a dedicated team covering strategy, copywriting, design and implementation. That structure may suit operators who want related tasks handled by one agency rather than coordinating separate specialists. Ask who will attend planning calls and how feedback moves between team members. FlowCandy also provides training and systems handoff for brands that plan to bring work in-house later, a practical advantage for teams using an agency to establish the program and document what works before transitioning execution internally.

Pros

• 500+ brand track record indicates broad ecommerce experience across niches and customer lifecycles
• Klaviyo-only focus supports deep work on segmentation, flows, campaigns and deliverability
• Dedicated strategy, copy, design and implementation team can help maintain a Consistent voice and quality
• Training and systems handoff option suits brands planning an eventual in-house transition

Cons

• Klaviyo-only scope means brands committed to Omnisend will find a tighter fit elsewhere
• Brands seeking help beyond Klaviyo would still need internal resources or another provider for those channels

Who it’s best for: Ecommerce brands that want a dedicated, full-service retention team with the option to systematize and eventually transition work in-house.

#4. Sorted – best for D2C brands running acquisition and retention as one system

An integrated growth partner for D2C brands that want paid media and retention coordinated instead of siloed.

Sorted runs acquisition and retention as one system for D2C and ecommerce brands. The core offer combines Meta and Google paid media with Klaviyo email and SMS, supported by Shopify and Shopify Plus conversion rate work, custom integrations and white-label delivery for agency partners. Teams work US hours, which helps brands that want live collaboration on offers, launches and reporting.

The appeal is coordination. When the same partner sees ad creative, landing page behavior and email performance, it can align messaging across touchpoints and sequence launches around shared reporting. That does not remove the need for clear attribution rules, since paid and email platforms credit conversions differently, but it reduces the back-and-forth of managing two separate roadmaps. For brands tired of acquisition and retention pulling in different directions, the single-system approach simplifies planning and creative reuse.

Pros

• Combined Meta, Google and Klaviyo email plus SMS coverage suits brands that want one growth roadmap
• Klaviyo email and SMS included as a core service rather than a bolt-on
• Shopify and Shopify Plus conversion support plus custom integrations help connect traffic to retention
• White-label delivery and US-hours collaboration add flexibility for brands and agency partners

Cons

• Broader paid plus retention scope is more than brands seeking an email-only specialist need
• Integrated retainers require clear ownership of budgets, approvals and attribution rules to avoid channel overlap

Who it’s best for: D2C brands that want acquisition, retention, conversion support and integrations managed together rather than split across vendors.

What to agree on before onboarding

A strong proposal should explain the work as well as the revenue goal. Ask each shortlisted agency to separate its initial audit and setup work from the recurring monthly scope. The first may cover event tracking, existing automations, signup forms and account organization. The second should identify campaign volume, flow improvements, testing, reporting and the people responsible for delivery. Ask whether SMS strategy, copy and implementation are included or priced separately.

Agree on a manageable approval process before the first send. Your team should supply accurate product information, promotion rules, inventory updates and brand guidelines. The agency should explain how it checks links, discount codes, audience exclusions and mobile layouts. Name a final approver and a backup so launches do not stall when someone is unavailable. Decide how customer service feedback, such as recurring delivery questions, will reach the people writing campaigns.

Keep accounts and assets under the brand’s ownership. Grant role-based access appropriate to the work rather than sharing personal logins. The agreement should explain what happens to templates, creative files, reporting and documentation when the relationship ends. FlowCandy’s support for an eventual in-house transition is especially relevant here, but clear handoff terms matter with every provider.

Compare the full cost of operating the program: agency fees, platform subscriptions, SMS usage and any separately billed development or creative work. A lower retainer can cover less work, while a broader retainer may duplicate internal resources. Judge each proposal against the same deliverables and review rhythm, then choose the team whose responsibilities match the gaps in your own organization.

Frequently asked questions

What should Shopify brands look for when hiring an email marketing agency?

Look for Shopify-specific platform fit and clear revenue reporting, backed by full execution ownership. The agency should be fluent in Klaviyo or Omnisend on Shopify, handle strategy, copy, design, flows, campaigns, SMS, forms and deliverability, and explain how it tracks attributed revenue against store data. Discuss onboarding needs, access requirements, approval timelines and compliance practices, including list Consent and the CAN-SPAM Rule. Choose the partner whose scope matches your goal, whether that is hands-on Klaviyo execution, embedded team support or integrated paid and retention management.

How much of a Shopify store’s revenue should come from email and SMS?

There is no single revenue share every Shopify brand should target. eCom2Win reports a typical 20-40% share among its clients, but that does not establish a benchmark for all stores. Purchase frequency, list size, traffic sources and attribution settings affect the percentage. Review channel revenue alongside overall store sales, repeat purchase behavior, unsubscribes and messaging costs. A rising attributed share alone does not show that email or SMS caused additional purchases.

What is the difference between a Klaviyo Partner agency and a standard email marketing agency?

A Klaviyo Partner agency participates in Klaviyo’s partner program, while a general email agency may offer services across several platforms. Partner recognition is a useful starting point, not proof that one team will build faster or outperform another. Ask for examples relevant to your Shopify setup and the experience of the people assigned to your account, along with an explanation of their segmentation and QA process. Brands using Omnisend should likewise evaluate relevant platform experience rather than relying on a badge alone.

What email flows are most important for a Shopify brand to set up first?

Start with welcome, abandoned cart, abandoned checkout, post-purchase and winback. Welcome captures intent from new subscribers, cart and checkout flows recover high-intent shoppers, post-purchase drives reviews and second orders, and winback re-engages lapsed customers. Add browse abandonment and replenishment or cross-sell where relevant, plus a strong signup form and SMS capture to feed those flows. Get the core five live and converting before expanding into seasonal or lifecycle series.

How do email marketing agencies measure and report attributed revenue?

Most agencies report attributed revenue directly from Klaviyo or Omnisend, with order credit depending on each platform’s attribution rules, account settings and lookback windows for email or SMS interactions. Good reporting shows flow versus campaign contribution and compares platform numbers to Shopify store data while distinguishing attributed revenue from incremental impact. Ask how long the attribution window is, how SMS and email overlap is handled, and how often reporting will cover testing results, deliverability trends and next actions.

A final take for Shopify brands

Choosing among email marketing agencies for Shopify comes down to scope and working style. eCom2Win is the strongest overall choice for partner-backed ownership of email and SMS with platform-reported revenue benchmarks. Social Scout suits hands-on Klaviyo execution, FlowCandy offers an embedded team approach with future handoff, and Sorted suits brands that want paid and retention planned together. If retention is your Constraint, start with a focused audit of flows, list growth and SMS, then hand the channel to the specialist that fits your platform and stage.