Email should generate 30-40% of your ecommerce revenue. And if it’s not, then you should partner with an agency that understands email deliverability, customer psychology, and conversion optimization (not the ones that lock you into contracts while your metrics flatline).
As an email marketing consultant who has helped hundreds of ecommerce businesses transform underperforming email campaigns into their highest-ROI marketing channel, I’ve prepped this guide covering:
- The 10 best ecommerce email marketing agencies with verified results
- Real pricing information (because agencies love hiding this)
- Actual client reviews from Clutch, Trustpilot, and Google
- How to choose the right partner for your store
- What services does each agency excel at
Let’s help you figure out which ecommerce email marketing agency can turn your email list into a revenue-generating machine.
TLD: Quick comparison — Top ecommerce email marketing agencies
Don’t have the time to read the entire piece? Here is a quick overview of the best ecommerce email marketing agencies out there:
| Agency | Best for | Starting price | Location | Key specialty |
| Flowium | Full-service Klaviyo expertise | $10,000-$25,000/project | Staten Island, NY | Klaviyo Master Elite Partner |
| Retention Commerce | Shopify automation | Contact for quote | Los Angeles, CA | Shopify lifecycle marketing |
| Lilo Social | DTC lifecycle marketing | $450-$500/email | Jackson, WY | 963% avg. revenue growth |
| Alchemy Worx | Enterprise businesses | Contact for quote | New York, NY | $2M+ annual revenue brands |
| DIDO Agency | Full-cycle email & SMS | $1,000+ projects | Brooklyn, NY | Data-driven campaigns |
| Inbox Army | Platform-agnostic service | $1,000+ projects | Grapevine, TX | 40+ ESPs supported |
| Fuel Made | Shopify & Klaviyo | Contact for quote | Colbert, WA | 24 years experience |
| MH Digital | End-to-end strategy | $1,000+ projects | Denver, CO | Klaviyo & Braze focus |
| No Limit Email | DTC revenue growth | $5,000+ projects | Sydney, Australia | 20%+ revenue increase |
| & BAM | Email outsourcing | Contact for quote | Charlottetown, Canada | Klaviyo expertise |
1. Flowium
Flowium consistently ranks as one of the most trusted names as an ecommerce email marketing agency, particularly for brands serious about scaling with Klaviyo.
Founded in 2017, they’ve carved out a reputation for turning underperforming email programs into revenue engines that drive 20-50% of total business income. What sets them apart is their hands-off service model (you approve campaigns, they handle everything else).
They assign a dedicated 6-member team to each brand, which means you get specialist expertise in copywriting, design, strategy, and technical implementation working together.
Key services offered
Flowium covers the complete email marketing spectrum for ecommerce brands.
- SMS marketing integration
- Comprehensive audits and consulting
- Advanced segmentation and personalization
- Campaign creation, management, and execution
- Email marketing strategy and campaign planning
- Email automation workflows and flow optimization
- Platform migration (Mailchimp to Klaviyo transitions)
Pricing
Project costs typically range from $10,000 to $25,000 based on industry sources.
They incentivize longer commitments with 20% discounts on 12-month contracts and 10% discounts on 6-month agreements. Clients consistently report good value considering you get an entire specialist team.
Pros & cons
Weighing your options means looking at both strengths and potential drawbacks of this ecommerce email marketing agency.
| Pros | Cons |
| Klaviyo Master Elite Partner with deep expertise | Occasional account representative turnover |
| Dedicated 6-person team per brand | Premium pricing may not suit smaller businesses |
| Month-to-month contracts with price lock guarantee | Focused primarily on Klaviyo |
| Proven 1000%+ revenue growth case studies | |
| Transparent communication via Slack and Zoom |
What users say
Clients rave about Flowium’s organizational skills and results-driven approach.
On Clutch, they maintain a perfect 5-star rating, with users highlighting “unparalleled organization” and “timely delivery.”
One client noted their sales grew over 1,000% after implementation.
The consistent feedback centers on exceptional project management, deep Klaviyo expertise that produces measurable revenue increases, and a collaborative team that integrates seamlessly with client brands.
2. Retention Commerce
Retention Commerce specializes in transforming Shopify store visitors into loyal, repeat customers through marketing automation.
Founded in 2015 by Joseph Hsieh (known for sharing valuable free content in marketing communities), this Los Angeles-based ecommerce email marketing agency focuses exclusively on increasing Customer Lifetime Value for Shopify merchants.
Their approach centers on automation that works while you sleep. Instead of manually managing campaigns, they build systems that trigger based on customer behavior.
Key services offered
Retention Commerce builds comprehensive retention systems for Shopify stores.
- Custom email template design
- Loyalty program implementation
- Retargeting advertising campaigns
- App integration and technical setup
- Chatbot and messenger marketing setup
- Email flow automations and behavioral triggers
Pricing
Based on industry standards for retention-focused agencies with their experience level, expect monthly retainers in the $2,000-$10,000 range, depending on your store size and service scope.
Pros & cons
Before you commit, consider what makes this ecommerce email marketing agency stand out and where it might fall short.
| Pros | Cons |
| Shopify-specific expertise and optimization | Limited to Shopify platform |
| Strong focus on lifetime value and retention | Pricing not transparent on website |
| Month-to-month contracts | Smaller team compared to larger agencies |
| Owner actively shares expertise in communities |
What users say
Joseph Hsieh’s reputation for providing valuable free advice translates into client relationships. Users appreciate the practical, actionable strategies Retention Commerce implements.
Clients consistently mention the ecommerce email marketing agency’s deep understanding of Shopify’s ecosystem and their ability to create automated systems that convert browsers into buyers.
3. Lilo Social
Lilo Social (recently rebranded from Tequila Sunrise) helps ambitious DTC brands build lifecycle marketing machines that turn one-time buyers into lifelong fans.
Founded in 2018 in Jackson, Wyoming, they’ve worked with 500+ DTC brands and claim impressive numbers (963.76% average email revenue growth, 18x return on email spend after one year).
Their philosophy treats email and SMS as part of a 360-degree customer journey rather than isolated tactics.
Key services offered
Lilo Social delivers comprehensive lifecycle marketing services.
- Email design and copywriting
- Popup strategy and implementation
- Campaign creation and management
- Email and SMS strategy development
- A/B testing and performance optimization
- Deliverability optimization and technical setup
Pricing
Pricing starts around $450-$500 per email, with comprehensive packages ranging from $4,000-$7,000 monthly. Projects typically begin at $5,000 minimum, with hourly rates between $100-$149.
Pros & cons
The ecommerce email marketing agency brings impressive creativity, but reviews tell a more complicated story.
| Pros | Cons |
| Impressive claimed results (963% avg. revenue growth) | Mixed reviews with some negative feedback |
| 360-degree lifecycle marketing approach | Claims may be overstated according to some clients |
| Strong creative and copywriting capabilities | Communication issues mentioned by some users |
| Klaviyo Elite partner status | Claims may be overstated, according to some clients |
What users say
Reviews paint a mixed picture. Positive reviews on Clutch praise their “easy-going attitude,” “personalized approach,” and ability to increase revenue by 27% in the first month.
One client noted, “Their creativity knows no bounds.”
However, negative reviews on Trustpilot tell a different story. Some clients report “negligible improvement” despite bold promises, with one noting the 963% growth claim was “grossly overstated” in their experience.
Results may vary significantly based on brand fit.
4. Alchemy Worx
With 23 years in the email marketing game, Alchemy Worx brings enterprise-level sophistication to ecommerce brands, generating serious revenue.
Founded in 2001 and headquartered in New York, they cater to businesses with annual online sales ranging $2 million to multi-billion in annual online sales.
Their client roster includes heavyweight brands like Disney and Universal Music Group.
Key services offered
Alchemy Worx provides enterprise-grade email marketing services.
- Email design and copywriting
- Intelligent automation workflows
- Strategic email marketing planning
- Performance reporting and analytics
- Campaign production and management
- Advanced segmentation and personalization
Pricing
Enterprise email marketing typically starts around $10,000+ monthly for comprehensive services, scaling significantly based on list size, volume, and complexity.
Pros & cons
Their enterprise focus comes with corresponding benefits and limitations.
| Pros | Cons |
| 23 years of proven experience | Premium pricing targeted at enterprise clients |
| Enterprise-level expertise | Not suitable for small businesses or startups |
| Works with major brands (Disney, Universal Music) | Less transparent about pricing |
| Handles complex, high-volume email programs |
What users say
Alchemy Worx maintains a lower public profile (typical for enterprise-focused agencies where NDAs are common).
However, their longevity and blue-chip client roster speak volumes. Brands don’t keep agencies for years unless they’re delivering consistent results.
5. DIDO Agency
DIDO Agency operates from Brooklyn with a straightforward mission: use data-driven email and SMS marketing to increase ecommerce revenue.
Founded in 2017, they’ve built a reputation for delivering measurable results (clients report sales increases of 24X and 115% boosts in email revenue).
Their team of 30+ people from 14 countries brings diverse perspectives that help ecommerce brands connect with equally diverse customer bases.
Key services offered
DIDO provides comprehensive email and SMS marketing services.
- SMS marketing campaigns
- Marketing strategy development
- Full-service campaign management
- Email template design and production
- Email automation and custom integrations
- Marketing audits and performance analysis
Pricing
Minimum project size starts at $1,000, with hourly rates ranging from $100-$149.
Pros & cons
They deliver strong results at accessible pricing, though brand recognition lags behind larger competitors.
| Pros | Cons |
| Impressive client results (24X sales increases reported) | Less brand recognition than larger agencies |
| Affordable pricing compared to competitors | Fewer public case studies available |
| Diverse team with cross-industry experience | May not suit very large enterprise clients |
| Strong communication and responsiveness | |
| 4-star rating on Trustpilot from verified clients |
What users say
DIDO Agency receives consistently positive reviews.
Clients on Clutch praise their “professional, efficient, and very creative” approach, with one noting Roman (the founder) increased their email revenue by 115%. Another mentioned open rates jumped from 18% to 40%, earning recognition from Klaviyo.
Users consistently highlight the team as “highly accessible,” providing “many useful ideas and strategies.”
6. Inbox Army
Founded in 2016 and headquartered in Grapevine, Texas, Inbox Army serves 5,000+ clients across 25+ industries.
Their unique selling proposition is platform agnosticism — they support 40+ Email Service Providers, meaning you’re not locked into a single platform.
Chris Marriott, one of the email marketing pioneers, leads a team of 150+ marketers and 40+ ESP experts. They’re ranked #1 on the Clutch Leaders Matrix with a 4.9 rating from 68 reviews.
Key services offered
Inbox Army offers comprehensive email marketing solutions across platforms.
- Strategy and audits
- White-label services
- Deliverability optimization
- SMS marketing integration
- Full-service campaign management
- ESP vendor evaluation and migration
- Email template production and design
- Email automation and advanced workflows
Pricing
Projects start at $1,000 minimum, with hourly rates between $100-$149.
Monthly retainers typically range from $1,000-$3,000 for small businesses to $3,000-$10,000+ for larger operations. They operate without long-term contracts.
Pros & cons
Their versatility across platforms sets them apart, though comprehensive services might overwhelm smaller operations.
| Pros | Cons |
| Platform agnostic (supports 40+ ESPs) | Comprehensive services may overwhelm very small businesses |
| Competitive pricing (30% less than many competitors) | Less specialized in specific ecommerce platforms |
| No long-term contracts required | |
| Ranked #1 on Clutch Leaders Matrix | |
| 150+ team members with deep expertise |
What users say
Inbox Army receives overwhelmingly positive feedback. On Clutch, users consistently praise their “exceptional ability to elevate email marketing strategies” and “responsive, quick email replies.”
One client noted that Inbox Army doubled their email list and generated follow-up orders, while another mentioned a 140% revenue increase. Multiple clients describe them working “as an extension” of internal teams.
7. Fuel Made
With 24 years of experience (founded in 2000), Fuel Made ranks among the most seasoned ecommerce email marketing agencies in the United States.
Based in Colbert, Washington, they’ve focused their expertise narrowly on Shopify design/development and Klaviyo email marketing.
They work exclusively with Klaviyo as a professional partner, which means if you’re not using (or willing to switch to) Klaviyo, they’re not the right fit.
Key services offered
Fuel Made provides specialized Shopify and Klaviyo services.
- CRO audits and analysis
- Automation workflow development
- Conversion Rate Optimization consulting
- Custom Shopify design and development
- Full-service Klaviyo email and SMS marketing
Pricing
Given their 24 years of experience and senior-level team, expect pricing in the premium range — likely $3,000-$10,000+ monthly for comprehensive services.
Pros & cons
Their deep experience comes with trade-offs worth considering.
| Pros | Cons |
| 24 years of ecommerce experience | Requires use of Klaviyo platform |
| Specialized Shopify expertise | Pricing not transparent |
| Senior-level professional team | Limited platform flexibility |
| Klaviyo professional partner |
What users say
Public reviews are more limited, but their longevity (24 years) speaks to consistent client satisfaction. Ecommerce brands seeking experienced professionals who understand the Shopify/Klaviyo ecosystem find Fuel Made appealing.
8. MH Digital
MH Digital, founded in 2017 and based in Denver, Colorado, brings a results-focused approach to email and SMS marketing.
They specialize in Klaviyo and Braze platforms (focusing 90% on email, 10% on SMS), providing unique integrations and comprehensive management.
What distinguishes them is their proactive partnership style (clients consistently mention they “push us to be better”) combined with strong strategic insights.
Key services offered
MH Digital delivers comprehensive email and SMS marketing.
- Automation workflows
- Audits and system setup
- Deliverability management
- Email development and design
- Advanced segmentation strategies
- Email and SMS strategy formulation
- Campaign management and optimization
Pricing
Starting project cost is $1,000+, with hourly rates between $50-$99. Ongoing Klaviyo packages start at $2,000, $3,500, or $4,500 monthly, depending on service scope.
Pros & cons
Their competitive pricing and strategic partnership approach offer clear value, though limited experience compared to industry veterans.
| Pros | Cons |
| Proactive strategic partnership approach | 7 years experience (less than some competitors) |
| Competitive hourly rates ($50-$99) | Focused primarily on Klaviyo and Braze |
| Clear package tiers for different budgets | Smaller team may limit capacity |
| Strong client feedback on communication |
What users say
Clients consistently praise MH Digital’s proactive approach and strategic thinking.
Reviews highlight the team’s ability to “professionally and gently push us to be better” while “communicating clearly” and “proactively sharing ideas.”
9. No Limit Email
Founded in 2020 and headquartered in Sydney, Australia, No Limit Email serves a substantial US client base (with branch offices in Colorado and Texas).
They’ve built their reputation on a specific promise: improving overall revenue by more than 20% through automated and human-crafted campaigns.
Their approach emphasizes building enduring customer relationships that transform hesitant buyers into devoted supporters.
Key services offered
No Limit Email specializes in DTC email and SMS marketing.
- Testing and optimization
- Automated email and SMS flows
- Email design and template creation
- Copywriting and messaging strategy
- Campaign management and strategic planning
Pricing
Minimum project costs start at $5,000+. Hourly rates typically range from $150-$199. Expect comprehensive packages to run $5,000-$15,000+ monthly.
Pros & cons
Premium pricing meets a young agency with specific expertise.
| Pros | Cons |
| Clear revenue goal (20%+ increase) | Higher pricing tier ($150-$199/hour) |
| Expertise in DTC firm challenges | Only 4 years in business |
| Behavior-driven automated campaigns | Based in Australia (time zone considerations) |
| US offices for American clients |
What users say
As a relatively new agency (founded in 2020), No Limit Email has fewer public reviews than established competitors.
However, their focus on “innovative and results-driven” marketing strategies resonates with DTC brands seeking partners who understand direct-to-consumer commerce challenges.
10. & BAM
Based in Charlottetown, Prince Edward Island, Canada, & BAM was launched in 2018 and has quickly established itself as a go-to email marketing outsourcing solution.
Despite their Canadian headquarters, they serve a large US clientele and maintain expertise across multiple email platforms (with particular strength in Klaviyo).
Their refined full-service approach emphasizes customizing customer relationships.
Key services offered
& BAM provides comprehensive outsourcing solutions.
- Klaviyo specialist services
- Automated email and SMS flows
- Campaign creation and management
- Multi-platform email marketing support
- Platform integrations and technical setup
Pricing
Based on their 6 years of experience and comprehensive service offerings, expect pricing similar to mid-tier agencies — likely $2,000-$8,000 monthly depending on service scope.
Pros & cons
They balance technical proficiency with customer relationship focus, though limited public information makes evaluation harder.
| Pros | Cons |
| Klaviyo expertise with multi-platform flexibility | Limited public information available |
| Strong technical proficiency | Based in Canada (potential time zone differences) |
| Focus on customer relationship customization | Pricing not transparent |
| 6 years focused experience |
What users say
& BAM maintains a lower public profile with limited reviews available. However, their reputation for Klaviyo expertise and their ability to serve a large US client base from Canada suggest reliable service delivery.
How do you choose the right email marketing agency?
Selecting an email marketing agency feels overwhelming when you’re comparing claims of 900% revenue increases against hourly rates and contract terms.
But the right choice comes down to matching agency strengths with your specific situation, budget, and goals.
Match agency size to your revenue
If you’re generating under $500K annually, enterprise-focused agencies like Alchemy Worx will be overkill (and prohibitively expensive).
Conversely, if you’re doing $5M+ yearly, you need the sophistication that agencies like Flowium or Inbox Army provide.
Platform matters more than you think
If you’re married to Klaviyo, agencies like Flowium, Fuel Made, and & BAM offer deep platform expertise.
But if you’re platform-agnostic or considering switching ESPs, Inbox Army’s support for 40+ platforms provides crucial flexibility.
Before you commit, verify they excel with your current (or intended) email platform.
Budget determines realistic expectations
Agencies charging $150-$199/hour (like No Limit Email) deliver different service levels than those at $50-$99/hour (like MH Digital).
However, higher rates don’t automatically mean better results. Focus on ROI claims backed by verifiable case studies rather than flashy promises.
Deliverability expertise separates mediocre from exceptional
Before signing any contract, ask how the ecommerce email marketing agency handles email deliverability challenges.
Do they monitor sender reputation?
Can they help with SPF, DKIM, and DMARC setup?
Do they use tools like our email spam checker to verify campaigns land in inboxes? Agencies that shrug off deliverability questions will waste your money sending emails nobody sees.
Consider starting with our email deliverability test before engaging an ecommerce email marketing agency.
You need baseline metrics to measure their impact.
Let’s fix your deliverability for FREE
Your email list represents one of your most valuable marketing assets, yet most ecommerce businesses barely scratch the surface of its revenue potential. Even the most brilliant campaigns from the best agencies fail if your emails land in spam folders.
At EmailWarmup.com, we fix the foundation that determines whether any campaign succeeds or fails. While agencies focus on strategy and design, we guarantee every email actually reaches your customers’ inboxes.
What you get:
- Technical setup support (SPF, DKIM, DMARC, blacklist removal)
- Unlimited consultations with dedicated email deliverability consultants
- Free email spam checker browser extension showing real-time deliverability
- Personalized email warmup analyzing your actual campaigns (achieving up to 98% inbox rates)
Start with our Free Forever plan ($0), including one mailbox warmup, free deliverability consultation, and unlimited tests. Or upgrade to Pro at just $19/mailbox for unlimited mailboxes with 98% inbox rates.
Want to see how it works?
Frequently asked questions
Here are some commonly asked questions about ecommerce email marketing agencies:
Small businesses: $1,000-$3,000 monthly. Mid-sized: $3,000-$10,000. Enterprises: $10,000+. If an agency costs $5,000 but generates $50,000 in email revenue, the investment justifies itself.
Agencies give you diverse expertise (strategists, copywriters, designers) for the cost of one senior hire. In-house specialists offer dedicated focus but lack breadth. Many use a hybrid approach.
Expect 30-60 days for initial metric improvements. Significant revenue increases appear within 90-120 days. Zero improvement after 90 days means the ecommerce email marketing agency isn’t executing effectively or your deliverability needs fixing.
No. While Klaviyo dominates, Inbox Army supports 40+ platforms including Mailchimp, HubSpot, Salesforce, and ActiveCampaign. Choose your platform first, then find agencies specializing in it.
Yes, reputable agencies handle GDPR, CAN-SPAM, and CASL compliance. However, ultimate legal responsibility remains with your business, so verify their expertise before hiring.
Track email-attributed revenue, conversion rates, open rates, click-through rates, and deliverability metrics before and after. Request monthly dashboards with before/after comparisons. No bottom-line impact within 90 days? You’re not getting value.
Absolutely yes. Poor sender reputation sends even expert campaigns to spam. Email warmup builds your reputation gradually. Start 14-30 days before campaigns begin and maintain continuous warmup between major sends.
