Top 10 Best Ecommerce Email Marketing Agencies for 2025

It comes as a shock to some that many ecommerce brands still struggle with email marketing. Nowadays there are so many available tools!  And yet, it is still too simple to oversee the main clue of email marketing - if you want to get results, you need to do it right.

Real email success requires more than sending messages. You need to develop a strategy, learn about proper timing, and get a general understanding of what moves the needle. Today’s top email marketing agencies are more than service providers. They help brands turn passive subscribers into loyal customers, drive revenue through automated flows, and lift metrics that actually matter: open rates, click-throughs, conversion, and most of all return on investment. Below, we spotlight the 10 best ecommerce email marketing agencies for 2025. These are the firms that don’t just send emails, but deliver results you can measure, scale, and bank on!

Our picks for Top 10 Best Ecommerce Email Marketing Agencies for 2025

We chose our ranking based on the estimated ROI, which is summarized in the table below. Additionally the factors used in the evaluation included reach (market scope), type of clients (fashion, electronics, retail etc.), founders and leadership background, as well as technological advancement and creativity. 

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1. InboxArmy

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InboxArmy is one of the best ecommerce email marketing agencies in 2025, earning the top spot in our ranking through a strong focus on authenticity, transparency, and consistent results. The agency blends tailored strategy with advanced coding and automation, delivering campaigns that feel personal and perform at scale.

Headquartered in the United States, InboxArmy supports mid-sized to enterprise clients across 25+ industries, including ecommerce, SaaS, universities, retail, real estate, food and beverages, banking, healthcare, automotive, pets, travel, and manufacturing. Their ability to combine technical precision with industry-specific insight makes them a trusted partner for brands aiming to turn email into a high-performing revenue engine.

Reach: Based in Grapevine, Texas, InboxArmy serves a global clientele spanning startups to Fortune 500s, with strong roots in the U.S. market and operations across multiple sectors.

Leadership: Co-founded by email pioneer Chris Donald and led by CEO Scott Cohen - 2021 ANA Stefan Pollard Email Marketer of the Year and co-chair of ANA’s Email Excellence Center.

Clients: Trusted by over 5,000 brands including Spotify, Airbnb, Hilton, P&G, and eBay - covering travel, tech, retail, and consumer goods.

Standout Strategy: Specializes in high-impact lifecycle automations, creative development, deliverability, and ESP flexibility (working across 40+ platforms), delivering scalable email ROI for both emerging and enterprise brands.

2. Fuel Made

Fuel Made shines with its conversion-obsessed strategy. This agency is behind some of the most high-performing ecommerce email flows today. If your focus is on scaling sustainably through design-rich, high-ROI automation, Fuel Made is the name to know. Partnering with this agency means tapping into a senior team of Klaviyo-certified experts who bring data, storytelling, and UX together to turn emails into serious profit drivers.

Reach: Mainly serves premium Shopify Plus ecommerce brands in North America, but their remote model supports clients globally!

Leadership: Led by a seasoned team of senior-level copywriters, designers, and strategists, certified as Shopify Plus and Klaviyo Master Elite partners.

Clients: Focuses on high‑conversion brands like Beardbrand, Turbie Twist, Smidge—spanning skincare, wellness, and premium goods.

Standout Strategy: Their "Fuel Made Growth Model" combines bespoke Shopify and Klaviyo implementations with data-driven automation, boosting conversion, AOV, and lifetime value (e.g. +964% ROI for Beardbrand).

3. Belardi Wong

Standing out with its custom ESPs, Belardi Wong has a portfolio of more than 300 brands to prove their efficiency. If your focus is storytelling, this is the right address. Cooperating with Belardi Wong means gaining access to a group of experienced professionals, who know their ways in best email strategizing and creative production. 

Reach: U.S.-based, with nationwide operations specializing in DTC and catalog brands .

Leadership: Founders bring over 25 years in high-impact direct response and catalog marketing, serving 300+ brands.

Clients: Works with emerging lifestyle and catalog-based DTC brands such as Serena & Lily and well-known brands such as Birkenstock. 

Standout Strategy: Integrates direct mail, postcards, and triggered catalogs alongside email-offering true omnichannel marketing that blends offline personalization with digital automation.

4. Rejoiner

Awarded for its design Rejoiner takes great care of cart-abandonment and lifecycle email strategies. “Rejoiner” literally stands for their main mission and talent - if you are in need of reminding your lost customers about your brand, they are your go-to guy, being able to rebuild relations and create a long lasting loyalty. 

Reach: Remote-first agency based in Rhode Island, serving ecommerce and DTC brands across the US, Europe, and Asia.
Leadership: Founded by Mike Arsenault, a respected pioneer in lifecycle email marketing known for talks at industry events.
Clients: Works with established brands like Hydro Flask, Peak Design, Triumph, Native - covering outdoor gear, home goods, and apparel.
Standout Strategy: Combines proprietary platform capabilities with hands-on consulting, optimizing every stage of the customer journey - driving 30%+ email revenue improvements and lowering overhead compared to in-house operations.

5. Chronos Agency

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If you are looking for consistent revenue growth, there are not many agencies for reliable than Chronos. Clients of this firm appreciate the team’s consistency and ability to create lifetime value. Considering their title as the Clutch’s Global Award winner of 2024, the firm remains a big player with impressive self-made tools. 

Reach: Global footprint, headquartered in Singapore, serving DTC brands across APAC, Europe, and North America.

Leadership: A Klaviyo Master Elite Partner with a syndicate of seasoned lifecycle marketers and strategists.

Clients: Works with scalable lifestyle, home goods, and sustainable-leaning brands seeking full-stack retention solutions.

Standout Strategy: Their proprietary "lifecycle marketing revenue estimator" tool and integrated use of email, and push notifications deliver consistent V-shaped revenue growth.

6. Charle Agency

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Charle Agency offers a comprehensive solution for brands aiming to elevate their retention and email marketing performance. Their team expertly manages everything from strategy and creative template design to advanced automation and loyalty programs, ensuring every campaign is optimized for customer lifetime value.

Reach: Serves a global roster of ambitious DTC brands, particularly those on Shopify and Shopify Plus.

Leadership: A specialist team of digital marketers, designers, and strategists recognized for their data-driven approach and creative execution.

Clients: Works with leading names in fashion, food, beauty, and lifestyle—including Candy Kittens and Cambridge Satchel—focused on maximizing repeat purchases and engagement.

Standout Strategy: Provides fully managed retention marketing, leveraging dynamic segmentation and continuous A/B testing. Charle Agency consistently delivers measurable results, such as doubling repeat purchase rates and significantly increasing overall email-driven revenue for their clients.

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7. Jarrang

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Jarrang with its strong UK base and international reach is a mention worth your while as a contender for the Innovative Agency of the Year at the Global Agency Awards 2025. Most valued services include automation and A/B testing, as well as a complex and tailored approach, supported by copywriting and design. 

Reach: UK-based (London & Falmouth), working globally across Europe, North America, and beyond.

Leadership: Experienced senior team specializing in Salesforce Marketing Cloud, Campaign Monitor, and Mapp integrations.

Clients: Fashion, pet care, gadget brands seeking bespoke FT work and full-funnel compliance-aware email.

Standout Strategy: Major in data hygiene and behavioral triggers, they pair creative email campaigns with rigorous testing, deliverability, and long-term optimization.

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8. eCommerce Today

This agency with hundreds of clients to prove their effectiveness is a big player that focuses on personalization, design and A/B testing to back up their process. Taking into account their fluency in automation engineering, eCommerce Today proposes a mix of modern and well-established solutions. 

Reach: Based in Brooklyn, NY, servicing US, European, and global Shopify and Klaviyo DTC merchants 

Leadership: Led by a Klaviyo Partner team with Shopify & PPC credentials, with a respected CEO Stefan Chiriacescu is a Clutch awardee and a conference speaker

Clients: Small to mid-market fashion, nutraceutical, marketplace, and subscription-retail brands

Standout Strategy: End-to-end integration—email flows, deliverability, SEO, PPC and Shopify migrations—with proven automation that delivered $7.3M+ in email-attributed revenue

9. Marmeto

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Marmeto is a champion of design-smart campaigns, with a shocking growth tempo, which is a perfect candidate for any small and mid-market brand. Combining these elements with their talent for automation creates an interesting contender to keep an eye on.

Reach: Bengaluru-headquartered, with offices and client presence across India, UAE, Saudi Arabia, and Europe.

Leadership: India’s first Shopify Premier Partner.

Clients: Leading DTCs in beauty, eco-living, gift and pet sectors, mainly across Shopify Plus brands.

Standout Strategy: Relies on deep Shopify customization, ERP integrations, and bespoke email tech to create automations that serve both acquisition and retention in emerging markets.

10. Structured Agency

What makes Structured Agency special is their ability to mix branding and retention marketing, which has proven to give back substantial profits. With their global reach, they pose as a strong candidate for brands which aim for a quick scale up on platforms such as Shopify. 

Reach: U.S.-based, working with 7–9 figure DTC and ecommerce brands worldwide, partner integrations with Klaviyo & Omnisend.

Leadership: Co-founded by an email expert, Chase Dimond, who teaches one of the most popular ecommerce email courses online.

Clients: DTC apparel, wellness, tech, and subscription brands generating millions via email.

Standout Strategy: Focused on full-funnel email systems, sending >1B emails to drive $200M+ in attributed revenue-delivering ~20–30% of total revenue from email alone.

Summary

Many ecommerce businesses undervalue the strategic depth and revenue potential of email marketing. Effective campaigns require more than standard templates, they depend on professional strategy, accurate audience segmentation, and precise timing. Leading email marketing agencies offer services that go beyond basic outreach, helping brands increase conversions, build customer loyalty, and achieve measurable ROI. Their services often include lifecycle automation, A/B testing, dynamic content personalization, and brand-consistent creative direction.

InboxArmy ranks as the top choice for ecommerce email marketing in 2025. Based in Grapevine, Texas, the agency serves mid-sized to enterprise clients across 25+ industries, including ecommerce, SaaS, healthcare, retail, real estate, finance, automotive, and education. It supports over 5,000 clients worldwide with a team of more than 120 specialists.

The company delivers scalable, vendor-agnostic solutions focused on transparency and performance. InboxArmy’s leadership includes Scott Cohen, recipient of the 2021 ANA Stefan Pollard Email Marketer of the Year award and co-chair of the ANA Email Excellence Center. The agency provides advanced capabilities in full-service email management, from automated lifecycle programs and data-driven segmentation to compliance consulting and multi-platform integrations.

For brands seeking a high-performing, revenue-generating email channel, InboxArmy offers one of the most comprehensive and reliable solutions available.