10 Best Ecommerce Marketing Agencies in the U.S. for 2025

We’ve highlighted the best ecommerce marketing agencies that consistently help brands scale in 2025. From advanced SEO and technical audits to social campaigns and CRO, these teams know how to turn digital visibility into measurable profit. These partners deliver lasting results, whether you are running a DTC startup or managing a complex online store.

Top Ecommerce Marketing Agencies

Let’s explore each of the 10 best ecommerce marketing agencies, including what makes them stand out and how they can help grow your online business in 2025.

1. SeoProfy

SeoProfy is a data-driven SEO agency founded in 2012, focused on revenue-driven organic growth. We originally started as a technical SEO team, and today we specialize in ecommerce SEO — working with large product catalogs, complex category structures, multi-language stores, and brands operating across multiple GEOs.

With 13+ years of experience, SeoProfy has a proven track record in successful website migrations, scalable content systems, and uncovering revenue opportunities through technical, semantic, and entity-based SEO.

SeoProfy also uses proprietary internal platforms (SearchAnalytics.ai, LinkChecker.PRO, Matrix) to identify fast-win pages and accelerate measurable performance more efficiently than standard tool-only workflows.

Company Name: SeoProfy

Founded: 2012

Headquarters: Orlando, Florida, USA

Employee Count: 100–250 employees

Primary Specialization/Focus: Data-driven SEO and content marketing for ecommerce, including technical SEO, link building, and strategic growth for online stores.

Overview/USP: Highly specialized Ecommerce SEO agency delivering major organic traffic gains using proprietary tools and deep technical expertise. SEOProfy has scaled clients from tens of thousands to hundreds of thousands of monthly visits.

Website Traffic: ~23K monthly visits (SimilarWeb estimate as of October 2025)

Key Clients: Autodoc, Jooble, Preply, VistaCreate, DMarket.

Reviews/Rating: 5.0/5 on Clutch (89 reviews as of October 2025)

Services Offered:

• Technical SEO audits (with a strong focus on ecommerce SEO issues)
• On-page optimization
• Link building
• Ecommerce SEO (Shopify SEO, WooCommerce SEO, Magento SEO)
• Content strategy & SEO copywriting
• CRO for commercial pages
• Selective PPC for online stores
• Analytics & consulting

eCommerce Platforms Company Works with: Shopify, WooCommerce, Magento, BigCommerce, and a variety of ecommerce platforms.

Case Study:

SeoProfy managed an ecommerce retailer’s website migration, restoring traffic within two months and achieving a 65% increase in organic traffic over the following year through a strategic SEO approach.

Contact Info:

• Website: seoprofy.com
• Email: info@seoprofy.com
• Phone: +1-407-610-2417
• Social Media: LinkedIn @Seoprofyteam, Facebook @Seoprofyteam, Instagram @Seoprofy.ua, X (Formerly Twitter) @Seoprofy

2. Thrive Internet Marketing Agency

Since 2005, Thrive Internet Marketing Agency has evolved from a regional digital agency into a comprehensive marketing provider among ecommerce marketing companies. It is recognized for having structured systems across SEO, paid media, and web development, allowing brands to manage multiple channels under one coordinated strategy.

Company Name: Thrive Internet Marketing Agency

Founded: 2005

Headquarters: Arlington, Texas, USA

Employee Count: 50–200 employees

Primary Specialization/Focus: Full-service digital marketing

Overview / USP: Thrive is a nationally recognized agency and Google Premier Partner focused on measurable ROI and collaborative client partnerships.

Website Traffic: ~105K monthly visits (SimilarWeb estimate as of October 2025)

Key Clients: Ready Seal, Tavistock Group, Hurom.

Reviews/Rating: 4.6/5 (103 reviews as of October 2025)

Services offered:

• SEO (technical, on-page/off-page, ecommerce, local)
• PPC management (Google Ads, Bing Ads, paid social)
• Ecommerce web design & development (UX/UI optimization)
• Social media strategy and management
• Content writing for product and blog assets
• Email marketing and marketing automation
• Amazon and marketplace SEO/PPC

Ecommerce Platforms the Company Works With: Shopify, WooCommerce, BigCommerce, Magento, custom CMS; Shopify Partner.

Case Study:

130% increase in organic revenue from SEO.

Contact Info:

• Website: thriveagency.com
• Phone: 866-908-4748
• Email: info@thriveagency.com
• Social: LinkedIn @Thrive-agency, X (Formerly Twitter) @Thriveagency, Facebook @Thriveagency, Instagram @Thriveinternetmarketingagency

3. Trellis

Founded in 2012, Trellis has grown into a leading full-service digital commerce agency and was acquired by Zaelab in late 2024. The Boston-based company delivers tailored B2B and B2C ecommerce solutions with a data-driven approach, spanning strategy, development, and continuous optimization.

Company Name: Trellis

Founded: 2012

Headquarters: Boston, Massachusetts, USA

Employee Count: 50–200 employees

Primary Specialization/Focus: Full-service ecommerce development & digital marketing solutions.

Overview / USP: Custom ecommerce implementations and data-driven marketing strengthened by integration into Zaelab’s B2B digital experience portfolio.

Website Traffic: ~3K monthly visits (SimilarWeb estimate as of October 2025)

Key Clients: Death Wish Coffee, NEST New York, Maxi-Cosi

Reviews/Rating: 4.9/5 on Clutch (12 reviews as of October 2025)

Services offered:

• eCommerce Platform Development: Building and integrating online stores on Shopify Plus, Adobe Commerce (Magento), BigCommerce, WooCommerce, and headless solutions.
• Web Design & UX/UI Optimization: Creative design and user experience improvements for higher conversion rates.
• Digital Strategy & Consulting: Data-driven ecommerce strategy, CRO, and performance marketing guidance.
• Performance Marketing: SEO, PPC, and email marketing campaigns focused on ROI for online retailers.
• ERP & Systems Integration: Connecting ecommerce sites with ERP/CRM systems for operational efficiency.

eCommerce Platforms the Company Works With: Shopify (Plus), Adobe Commerce (Magento), BigCommerce, WooCommerce, custom headless solutions; Shopify Partner.

Case Study:

20% increase in sales for an Italian home goods distributor.

Contact Info:

• Website: trellis.co
• Phone: 855-567-3843
• Email: hello@trellis.co
• Social: LinkedIn @Trellis-boston, Facebook @Growwithtrellis, Instagram @trelliscomerce

4. OuterBox

OuterBox has nearly twenty years of ecommerce expertise, having expanded from web design roots into SEO and PPC services. The agency has successfully tackled visibility and conversion challenges for large product catalogs and highly custom storefronts.

Company Name: OuterBox

Founded: 2004

Headquarters: Akron, Ohio, USA

Employee Count: 200–500 employees

Primary Specialization/Focus: Enterprise ecommerce SEO, PPC, and conversion-focused ecommerce development, including:

• Technical SEO for large catalogs
• Google Shopping and paid search campaigns
• CRO and site performance optimization
• Platform-specific SEO for Shopify, Magento, etc.

Overview/USP: Over 20 years of expertise in growing enterprise-level online stores. Strong technical SEO for websites with high SKU counts and complex architecture.

Website Traffic: ~65K monthly visits (SimilarWeb estimate as of October 2025)

Key Clients: Matco Tools, E-Collar Technologies, K2 Awards & Apparel

Reviews/Rating: 5.0/5 on Clutch (86 reviews as of October 2025)

Services Offered:

• SEO: Enterprise SEO, technical SEO audits, product page optimization, link building
• PPC Management: Google Ads, Bing Ads, retargeting, Google Shopping
• Web Design & Development: Custom ecommerce UX/UI, responsive builds
• CRO: A/B testing, checkout optimization, speed improvements
• Content Marketing: Product content and ecommerce SEO blogging
• Analytics & Reporting: Custom dashboards and GA/GA4 tracking

Ecommerce Platforms Company Works With: Shopify & Shopify Plus, Magento (Adobe Commerce), WooCommerce, BigCommerce, Volusion, and custom .NET/PHP solutions.

Case Study:

442% increase in conversions in the first 90 days after launching a modernized site for an industrial supplier to replace the dated version.

Contact Info:

• Website: outerboxdesign.com
• Email: sales@outerboxdesign.com
• Phone: 1-866-647-9218
• Socials: LinkedIn @OuterBox,  X (Formerly Twitter) @OuterBox, Facebook @OuterBox, Instagram @OuterBox

5. Flowium

Originally known as Email Marketing NYC, Flowium specializes in driving ecommerce growth through email and SMS marketing. The agency delivers full-service lifecycle marketing from auditing and strategy to creative execution and analytics.

Company Name: Flowium

Founded: 2017

Headquarters: Staten Island, New York, USA

Employee Count: 50–200 employees

Primary Specialization/Focus: Email & SMS marketing for ecommerce brands

Overview / USP: Flowium offers results-driven email marketing campaign services that consistently help clients far exceed industry benchmarks. Often driving over 35–70% of total revenue via email for its ecommerce clients.

Website Traffic: ~66K monthly visits (SimilarWeb estimate as of October 2025)

Key Clients: Andrea Iyamah, BetterBrand, XTerra Wetsuits

Reviews/Rating: 5.0/5 on Clutch (20 reviews as of October 2025)

Services offered:

• Email Marketing Audit & Strategy: Comprehensive audits of current email performance and development of tailored email marketing strategies aligned with brand goals.
• Marketing Automation & Campaign Management: Setup and optimization of automated email flows (welcome series, cart/browse abandonment, post-purchase, etc.) and ongoing campaign management.
• Email Design & Copywriting: Creation of on-brand email templates and persuasive copy that converts, including A/B testing of content and creatives.
• Audience Segmentation & A/B Testing: Advanced customer segmentation and continual testing (subject lines, send times, offers).
• SMS Marketing: Integrated SMS campaign strategy and management.
• Performance Analytics & Deliverability: In-depth reporting on email/SMS KPIs, deliverability monitoring, and iterative optimization to improve inbox placement and ROI.

Ecommerce Platforms the Company Works With: Platform-agnostic (serves brands on Shopify, Magento, WooCommerce, BigCommerce, etc.); official Klaviyo Elite Partner for email marketing.

Case Study:

Drove 72% of a client’s total revenue via email marketing.

Contact Info:

• Website: flowium.com
• Phone: (347) 683-5586
• Email: info@flowium.com
• Social: LinkedIn @Flowium, Facebook @Flowium, Instagram @Flowium

6. SmartSites

SmartSites specializes in paid advertising, SEO, and conversion-focused web development. The agency prioritizes measurable gains in discoverability and on-site engagement for retailers aiming to improve both acquisition and conversion.

Company Name: SmartSites

Founded: 2011

Headquarters: Paramus, New Jersey, USA

Employee Count: 200–500 employees

Primary Specialization/Focus: Full-service digital marketing with an ecommerce focus, including web design & development, SEO, PPC, CRO, and email marketing.

Overview/USP: SmartSites delivers award-winning web design paired with digital marketing to drive triple-digit gains in traffic and conversions.

Website Traffic: ~113K monthly visits (SimilarWeb estimate as of October 2025)

Key Clients: BMW (dealership network marketing), Tranio, SmartFX, Cosmetics Now.

Reviews/Rating: 4.9/5 on Clutch (334 reviews as of October 2025)

Services Offered:

• Website Design & Development: Custom Shopify, Magento, WooCommerce builds and UX/UI optimization
• Search Engine Optimization: Technical SEO, content optimization, national and local SEO strategies
• PPC Advertising: Google Search + Shopping, Microsoft Ads, Facebook/Instagram Ads, remarketing
• Conversion Rate Optimization (CRO): A/B testing, improved navigation, and checkout flows
• Email Marketing: Cart recovery, newsletters, retention campaigns
• Social Media Management: Optional organic social support and content strategy

Ecommerce Platforms Company Works with: Shopify & Shopify Plus, Magento, WooCommerce, BigCommerce, OpenCart, and PrestaShop. The company is particularly recognized for its expertise in Shopify and Magento design, as well as SEO.

Case Study:

Generated a 152% increase in revenue year-over-year and increased the conversion rate by 27% for a high-end online retailer.

Contact Info:

• Website: smartsites.com
• Email: contact@smartsites.com
• Phone: 201-870-6000
• Social Media: LinkedIn @SmartSites, Twitter @SmartSites, Facebook @SmartSites

7. 1Digital Agency

1Digital Agency focuses on custom ecommerce development supported by performance marketing execution. The agency handles complex builds, redesigns, and migrations to align user experience with growth goals for Shopify Plus and BigCommerce ecosystems.

Company Name: 1Digital Agency

Founded: 2012

Headquarters: Philadelphia, Pennsylvania, USA

Employee Count: 50–200 employees

Primary Specialization/Focus: ecommerce-focused design, development, and digital marketing, with strong SEO, PPC, and CRO execution.

Overview/USP: An ecommerce growth partner among US ecommerce marketing agencies known for complex custom development, high-quality UX design, and successful migrations without traffic loss.

Website Traffic: ~12K monthly visits (SimilarWeb estimate as of October 2025)

Key Clients: Hitachi, Lenox, Steinway & Sons, Synchrony

Reviews/Rating: 4.8/5 on Clutch (6 reviews as of October 2025)

Services Offered:

• Ecommerce Website Design & Development: Custom theme design, UX/UI overhauls, app/plugin development
• Platform Migration: Magento → Shopify, custom CMS → BigCommerce, and similar transitions while preserving SEO and product data
• Ecommerce SEO: Technical SEO, product/category optimization, content marketing for backlinks and authority
• PPC & Shopping Feeds: Google Ads, Bing Ads, Google Shopping feed optimization, remarketing
• Social Media Marketing: Paid social campaigns for catalog promotion
• Ongoing Support & Maintenance: Continuous improvement retainers

Ecommerce Platforms Company Works With: BigCommerce, Shopify/Shopify Plus, Magento, Volusion, WooCommerce, and custom ecommerce CMS builds. Well-known specialists in the BigCommerce Elite and Shopify Plus ecosystems.

Case Study:

Securing top-three search engine rankings for many high-volume, competitive keywords for a custom systems integrator.

Contact Info:

• Website: 1digitalagency.com
• Email: info@1digitalagency.com
• Phone: 888-982-8269
• Social Media: LinkedIn (1Digital Agency), Twitter (@1DigitalAgency), Facebook @1digitalagency

8. Intero Digital

Intero Digital operates through a unified framework that connects SEO, content, paid media, PR, and creative into one strategy. With roots in enterprise-level optimization, the agency has since broadened its capabilities to support sophisticated growth programs for online retailers.

Company Name: Intero Digital

Founded: 1996. The current unified brand was created by bringing together six specialized digital marketing firms.

Headquarters: Colorado Springs, Colorado, USA

Employee Count: 200–500 employees

Primary Specialization/Focus: Full-scale integrated digital marketing agency specializing in ecommerce and B2B, including SEO, paid media, content marketing, social media, marketplace marketing (Amazon), and web design & development

Overview/USP: Large, multi-discipline agency built from several best-in-class specialists, offering a single unified team for end-to-end ecommerce growth. Strong proprietary tech advantage via tools like InteroBOT® (SEO auditing) and GRO™ (AI-supported optimization).

Website Traffic: ~44K monthly visits (SimilarWeb estimate as of October 2025)

Key Clients: Mizuno, Western Union, Nexcess.

Reviews/Rating: 4.9/5 on Clutch (141 reviews as of October 2025)

Services Offered:

• Search Engine Optimization: Enterprise SEO, AI-driven optimization, technical audits, linkable content production
• Paid Media Management: Google Ads, Microsoft Ads, paid social, and programmatic campaigns
• Content Marketing & PR: Blog and resource creation, digital PR, influencer collaborations
• Social Media Marketing: Organic strategy and paid campaigns
• Amazon & Marketplace Marketing: Amazon SEO/PPC, Amazon DSP, product listing optimization, Walmart, and Target marketplace support
• Web Design & Development: UX enhancements, landing pages, full creative branding solutions
• Video Production: Marketing and commercial-grade content

Ecommerce Platforms Company Works with: Shopify, BigCommerce, Magento, WooCommerce, plus Amazon and other marketplaces.

Case Study:

86.65% increase in organic revenue for a sporting goods company.

Contact Info:

• Website: interodigital.com
• Email: info@interodigital.com
• Phone: 866-715-4458
• Social Media: LinkedIn @Interodigital, Instagram @Interodigital, Facebook @Interodigital

9. Disruptive Advertising

Disruptive Advertising focuses on boosting paid acquisition efficiency for ecommerce brands. The agency uses structured testing and precise budget allocation to drive stronger ROAS and customer acquisition.

Company Name: Disruptive Advertising

Founded: 2011

Headquarters: Pleasant Grove, Utah, USA

Employee Count: 50–200 employees

Primary Specialization/Focus: Performance marketing for ecommerce with core strengths in PPC (Google, Bing), paid social advertising, CRO, analytics, email marketing, and Amazon advertising

Overview/USP: Premier Google Partner known for data-driven execution with a focus on profitable growth. Industry-recognized through awards like Google’s Innovation Award and multiple Inc. 5000 listings.

Website Traffic: ~45K monthly visits (SimilarWeb estimate as of October 2025)

Key Clients: Adobe (analytics), PennyMac, Death Wish Coffee, Fandango

Reviews/Rating: 4.8/5 on Clutch (361 reviews as of October 2025)

Services Offered:

• Pay-Per-Click (PPC) Advertising: Google Search, Shopping, Display, YouTube; Microsoft Ads; feed optimization
• Paid Social Advertising: Facebook/Instagram, LinkedIn, Pinterest campaign management
• Conversion Rate Optimization (CRO): Heatmaps, user testing, A/B/n experimentation, improving landing pages and checkout funnels
• Email Marketing: Automated flows for acquisition and retention (welcome, cart recovery, post-purchase)
• Analytics & Attribution: Advanced tracking setup, dashboards, attribution modeling for multi-channel clarity
• Amazon Advertising: Amazon PPC and DSP for ACOS control, visibility, and scaling online sales.

Ecommerce Platforms Company Works with: Platform-agnostic (Shopify, Magento, WooCommerce, BigCommerce, etc.). CRO teams proficient with Unbounce, Optimizely, VWO, and Google Optimize.

Case Study:

52% increase in purchases, and a 2.1x return on ad spend for an online retailer.

Contact Info:

• Website: disruptiveadvertising.com
• Email: info@disruptiveadvertising.com
• Phone: Not publicly listed (contact via website)
• Social Media: LinkedIn @Disruptive-advertising, Twitter @Dirsuptiveads, Facebook @Disruptiveads.

10. Inflow

Inflow is a boutique ecommerce marketing agency known for senior-level involvement and high-touch management. It has built specialized capabilities in SEO, paid search, and conversion testing across diverse consumer segments.

Company Name: Inflow

Founded: 2007

Headquarters: Tampa, Florida, USA

Employee Count: 10–50 employees

Primary Specialization/Focus: ecommerce conversion rate optimization (CRO), SEO, PPC, and UX improvement for online retailers, driven by personalized strategies for brand-specific KPIs

Overview/USP: CRO-first performance approach focused on maximizing revenue from existing traffic. Strong reputation for consultative service, continuous testing, and transparent reporting.

Website Traffic: ~40K monthly visits (SimilarWeb estimate as of October 2025)

Key Clients: Nike (Jordan), Vitamix, Amer Sports, Mountain House, and Segway.

Reviews/Rating: 4.9/5 on Clutch (12 reviews as of October 2025)

Services Offered:

• Conversion Rate Optimization (CRO): UX audits, A/B testing, checkout optimization, personalization
• SEO for ecommerce: Technical fixes, indexability improvements, product/category optimization, content marketing, link building
• PPC Advertising: Google/Bing campaign management with focus on Shopping and retargeting efficiency
• Paid Social Advertising: Facebook, Instagram, and Pinterest ads for acquisition and remarketing
• Email & Retention Marketing: Lifecycle flows, loyalty strategies, returning-visitor conversion improvements
• Analytics & CRO Training: Enhanced ecommerce tracking setup, heatmaps, and coaching internal teams

Ecommerce Platforms Company Works With: Shopify, BigCommerce, Magento, WooCommerce, and custom carts. Familiar with testing tools like Google Optimize, VWO, and Optimizely.

Case Study:

59% increase in total site revenue for a military accessories ecommerce brand.

Contact Info:

• Website: goinflow.com
• Email: info@goinflow.com
• Phone: 303-905-6331
• Social Media: LinkedIn @Go-inflow, Twitter @goinflow, Facebook @goinflow

Find the Right Ecommerce Marketing Partner

Choose one or two key revenue levers you need to improve right now: higher conversion rates, better ROAS from paid media, or a stronger organic foundation so you’re less dependent on ads. Then choose the right ecommerce marketing agency — one that has already solved that exact challenge for brands like yours.

Ideally, you want a team that understands the mechanics of your store — your margins, your SKU structure, your attribution model — and knows how to turn that into scalable acquisition and retention.

If you’re looking for an ecommerce SEO partner with more than a decade of experience driving brands to the top of search results, SeoProfy can help. Book a quick discovery call and we’ll map out a plan aligned to your goals, your industry, and the revenue outcomes you want to see next.

Author

Andrew Shum

Andrew Shum is the Head of SEO at SeoProfy, with over 8 years of experience driving organic growth for startups, e-commerce brands, and Fortune 500 companies. He has led SEO strategies for 150+ websites across 20+ industries, delivering consistent results through data-driven optimization, technical audits, and scalable content frameworks. Andrew wrote this article to share proven tactics that align with Google’s latest updates and performance trends.