Top Email Marketing & Automation Companies

Email marketing and automation agencies own the inbox channel for a brand: the welcome, abandoned-cart, post-purchase and win-back flows that run on triggers, the campaign calendar that goes out on a schedule, and the platform underneath, whether Klaviyo, HubSpot or Braze. Online stores hire them to turn a list into repeat revenue, B2B teams to nurture leads between sales touches, and SaaS companies for onboarding and renewal sequences, usually after a migration, flat revenue from a growing list, or mail landing in spam.

Shortlist by the platform each agency is certified on and by what it reports: revenue per flow and per send, not open rates. Check whether copy and design are in-house and who owns deliverability.

How this list is built

We evaluate companies on verified profile data: services, pricing, locations, and portfolio. Client reviews are being collected. We may earn a fee for some placements. How we rank and verify

10,000 Companies

List of the Best Email Marketing & Automation Agencies

Grab Digital
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### About Grab Digital Grab Digital is a results-oriented agency specializing in Klaviyo email and SMS marketing tailored for eCommerce brands poised for growth. We focus on assisting small to mid-sized direct-to-consumer (DTC) companies in transforming email into a leading revenue source without t
Highlights
$1,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
Services Provided
70% Email Marketing & Automation
20% QA & Software Testing
10% CRM Consulting and SI
AI Summary
“Grab Digital excels in Digital Marketing by delivering specialized Klaviyo email and SMS marketing services, including strategy, copywriting, and automation, helping eCommerce brands boost revenue effectively through targeted communication.”
Inbox Gemini
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Email marketing for online retail businesses.
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Services Provided
80% Email Marketing & Automation
15% Ecommerce Marketing
5% SMS Marketing
AI Summary
“Inbox Gemini specializes in email marketing solutions tailored for online retail businesses, enhancing customer engagement and driving sales through targeted digital campaigns.”
Codermails
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We offer bulk SMTP services, email marketing solutions, and software for both transactional and promotional emails.
Highlights
$25-49/hr
Avg Hourly Rate
2-9
Employees
Services Provided
80% Email Marketing & Automation
10% Social Media Marketing
10% Influencer Marketing
AI Summary
“Codermails provides comprehensive bulk SMTP and email marketing services, delivering software solutions for transactional and promotional email campaigns with a focus on reliability and scalability.”
Thooja
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Boost your profits by converting and retaining a larger customer base. With our effective email and SMS marketing techniques, we assist in maximizing your e-commerce revenue and enhancing customer loyalty. Our primary focus is collaborating with sustainable brands.
Highlights
$1,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
Services Provided
70% Email Marketing & Automation
30% SMS Marketing
AI Summary
“Thooja specializes in email and SMS marketing to help sustainable brands boost e-commerce revenue by increasing customer conversion, retention, and loyalty effectively.”
Postman Agency
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Postman Agency is a leading name in eCommerce Email & SMS marketing, dedicated to increasing your brand's revenue by 20%-40% within just 60 days— or you won’t owe us anything! Our skilled team, which includes talented designers, skilled copywriters, strategic planners, and committed account managers
Highlights
$1,000+
Min Project Size
10-49
Employees
Services Provided
75% Email Marketing & Automation
25% SMS Marketing
AI Summary
“Postman Agency specializes in eCommerce Email and SMS marketing, delivering guaranteed revenue growth within 60 days through expert design, copywriting, and strategic management with performance-based fees.”
Mailigen
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Mailigen was founded in 2009 by technology specialists Janis Rose and Arturs Bernovskis. Their journey began when they identified a gap in the market for user-friendly email service providers. Within weeks, they developed a demo product, which attracted early users. Today, Mailigen serves thousands
Highlights
10-49
Employees
New York, New York, Us
Services Provided
75% Email Marketing & Automation
15% Content Marketing Strategy
10% Digital Strategy
AI Summary
“Mailigen, established in 2009, offers user-friendly email and SMS marketing solutions featuring drag-and-drop editors, automation, segmentation, and real-time analytics for global businesses.”
Navmi Emails
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Navmi Emails is a marketing agency specializing in email and SMS for contemporary eCommerce brands. We exclusively partner with Shopify stores to help them increase revenue and establish robust customer retention systems through effective strategies focused on owned channels. We're not a jack-of-all
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided
75% Email Marketing & Automation
25% SMS Marketing
AI Summary
“Navmi Emails is a specialized marketing agency focused on email and SMS strategies for Shopify-based eCommerce brands, enhancing customer retention, engagement, and revenue growth through tailored campaigns.”
Sendios
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Sendios collaborates with both small and large businesses to support them in reaching their goals through email marketing. Our platform and knowledge enable us to bolster our clients’ teams by managing the entire process for them. We continuously enhance our services to substantially impact the grow
Highlights
$1,000+
Min Project Size
10-49
Employees
Services Provided
75% Email Marketing & Automation
15% Marketing Funnel Development
10% Mobile & App Marketing
AI Summary
“Sendios partners with businesses to optimize email marketing through a comprehensive platform, managing campaigns and advancing technology to drive significant client growth and product success.”
BillionVerify
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BillionVerify is a professional email verification service designed to address a single issue: poor email data can be expensive for businesses. Every bounced email damages sender credibility, squanders marketing resources, and distorts campaign analytics. We created BillionVerify to provide teams of
Highlights
$1,000+
Min Project Size
$100-149/hr
Avg Hourly Rate
2-9
Employees
Middletown, Delaware, Us
Services Provided
70% Email Marketing & Automation
10% Account-Based Marketing (ABM)
20% Search Engine Optimization (SEO)
AI Summary
“BillionVerify offers fast, accurate, and affordable email verification services globally, enhancing marketing effectiveness by reducing bounced emails and improving data quality for businesses of all sizes.”
Bossar
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Bossar is an eCommerce email marketing agency that specializes in email and SMS marketing. With over 5 years of experience and a solid track record working with more than 100 stores, we concentrate exclusively on retention marketing that yields measurable outcomes. Most of the brands we collaborate
Highlights
$5,000+
Min Project Size
10-49
Employees
Warszawa, Masovian, Pl
Services Provided
70% Email Marketing & Automation
30% SMS Marketing
AI Summary
“Bossar is a specialized eCommerce agency focusing on email and SMS retention marketing, delivering scalable strategies and full-service management to support sustainable growth for established brands.”

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