Best Commerce Marketing Agencies: 15 Firms in 3 Groups
The best commerce marketing agencies in 2026 fall into three groups: affiliate agencies such as Acceleration Partners and DMi Partners, retail media agencies such as Tinuiti and Acadia, and Amazon agencies such as Amazon Growth Lab and Nuanced Media. None is a PR firm. This list orders 15 firms by how many 2026 guides name them, and most of those guides are self-published.
Updated October 31, 2026.
Summary
Fifteen firms are listed in three groups of five: affiliate, retail media and Amazon.
Firms are ordered by how many 2026 guides name them, not by audited results.
Affiliate and Amazon agencies sell performance work, and retail media agencies manage ads inside retailer networks such as Walmart Connect and Amazon Ads.
Fee models differ, so ask for the fee basis in writing before comparing quotes.
Everything-PR has not audited any firm's client results.
Which are the best commerce marketing agencies in 2026?
Fifteen agencies appear most often across 2026 guides to affiliate, retail media and Amazon marketing, five in each group. The table lists what each is known for and the evidence behind its place, and every description comes from a named source or the firm's own site.
Group
Agency
Known for
Evidence
Affiliate
Acceleration Partners
Enterprise affiliate program management
Named first in Webtonic's 2026 ranking of Boston affiliate agencies and described by Awisee as enterprise program management
Affiliate
DMi Partners
Full-service affiliate program management, Philadelphia, founded 2003
Listed by Awisee and Webtonic, and profiled in an EPR case study
Affiliate
Hamster Garage
Affiliate, Amazon affiliate and TikTok Shop programs
Listed first by Influencer Marketing Hub, and its own guides also rank it first
Affiliate
Perform[cb]
Affiliate and performance marketing, Sarasota, Florida, founded 2002
Listed by Influencer Marketing Hub and in a 2026 roundup of 12 affiliate agencies
Affiliate
Versa Marketing
Affiliate programs for DTC and e-commerce brands
Listed by Influencer Marketing Hub and by Ainfluencer
Retail media
Tinuiti
Performance marketing that links retail media to search and social
Featured in Digiday's 2026 retail media research and named on several affiliate and Amazon lists
Retail media
Acadia
Retail media and marketplaces across Amazon, Walmart, Instacart, Kroger and Target
Named Ad Age 2026 Media Agency of the Year, according to a Novadata profile
Retail media
Channel Bakers
Amazon advertising and retail media
Named on lists published by Cool Nerds Marketing and Canopy Management
Retail media
The Mars Agency
Shopper marketing, with a retail media network scorecard
Its fourth Retail Media Report Card rated Walmart Connect best in class among 14 networks, per P2PI
Retail media
Big Eye Agency
Retail media for CPG brands on Walmart Connect, Target Roundel, Kroger and Instacart
Described on its own services page
Amazon
Amazon Growth Lab
Full-service Amazon management
Named on Clutch, SalesDuo and Canopy Management lists
Amazon
Nuanced Media
Amazon advertising and account management, Tucson, Arizona
Named on SalesDuo, Canopy Management and Enrich Labs lists
Amazon
BellaVix
Amazon listing optimization and advertising strategy, Durham, North Carolina
Named on Clutch, SalesDuo and Enrich Labs lists
Amazon
Canopy Management
Marketing for Amazon, Walmart and TikTok sellers
Publishes guides that rank itself first, so treat its placement as self-reported
Amazon
Thrive Internet Marketing Agency
Full-service digital marketing that includes Amazon
Named on Canopy Management and Enrich Labs lists and on its own
Which affiliate marketing agencies stand out?
Five affiliate agencies recur across 2026 lists: Acceleration Partners, DMi Partners, Hamster Garage, Perform[cb] and Versa Marketing. An affiliate agency, sometimes called an outsourced program manager, runs a brand's affiliate program on a network such as Impact, CJ or PartnerStack, covering partner recruitment, optimization, compliance and payouts.
Five retail media agencies stand out in 2026 coverage: Tinuiti, Acadia, Channel Bakers, The Mars Agency and Big Eye Agency. Retail media means buying ads inside a retailer's own network, and Modern Retail+ Research found that Amazon and Walmart Connect were marketers' most-used networks for the fourth year in a row.
Tinuiti is the clearest case of a firm that spans the groups. Digiday's 2026 retail media research quoted Elizabeth Marsten, its vice president of commerce media, and other guides place it on affiliate and Amazon lists. The Mars Agency is useful for a different reason, because its Retail Media Report Card scores the networks themselves, not only the agencies that buy on them. The networks are explained in EPR's retail media networks guide.
Which Amazon marketing agencies stand out?
Five Amazon agencies recur across 2026 lists: Amazon Growth Lab, Nuanced Media, BellaVix, Canopy Management and Thrive Internet Marketing Agency. An Amazon agency manages a brand's Amazon channel, which can include listing optimization, advertising, inventory, content and reporting, so the first question is whether the brand wants ads only or the whole channel.
Amazon Growth Lab, Nuanced Media and BellaVix each appear on at least three of the lists reviewed. Most of those lists are published by agencies or agency-adjacent companies, so recurrence is a reason to research a firm, not proof of results. Brand-side strategy for the channel is covered in EPR's Amazon marketing strategy analysis.
How were the 15 agencies chosen?
The 15 agencies were chosen by counting how many 2026 guides name each firm, then checking what each firm or an independent source says it does. The method has limits that a buyer should know before using the list.
The sources were 2026 agency guides, directory pages and trade research found through web search in October 2026.
Most guides are published by agencies, and many rank their own publisher first.
Descriptions use named sources or the firm's own site, and firm-reported results are not repeated here.
Everything-PR has not audited any agency's client results, and inclusion is editorial and unpaid.
Software platforms such as Pacvue, Skai, Impact and PartnerStack are excluded, because they sell tools, not agency services.
What do commerce marketing agencies cost?
Commerce marketing agencies charge by flat retainer, by percentage of ad spend, by performance fee or by a mix, and few publish rate cards. One affiliate agency's own guide says most high-performing affiliate agencies require a minimum monthly retainer of $3,000 to $5,000 plus performance incentives, which is a vendor claim and not an audited benchmark.
Fee model
How it works
What to check
Flat retainer
A fixed monthly fee for a defined scope
Hours, named staff and what happens when scope grows
Percentage of ad spend
The fee rises with the media budget
Whether the agency profits when spend rises without results
Performance fee
Pay per sale, lead or incremental order
How incrementality is measured, so credit is not claimed for sales that would have happened anyway
Hybrid
A smaller retainer plus a performance share
The cap, the baseline and who owns the data
See the PR firm cost guide for how these models compare with PR retainers.
How do retail media networks differ from retail media agencies?
A retail media network sells advertising space and data inside a retailer, such as Amazon Ads or Walmart Connect, while a retail media agency plans, buys and measures campaigns across those networks for brands. Brands pay the network for media, and they pay the agency for management.
The distinction matters when comparing quotes. An agency that manages 50 networks, as Big Eye Agency says it does on its own site, is selling coordination, not media. A brand with spend on one network may not need an agency until budgets and reporting get complicated.
What should a buyer ask a commerce marketing agency?
A buyer should ask every commerce marketing agency the same six questions and compare the written answers. Vague answers on the first three usually show the agency has not defined its method.
How is your fee calculated, and what happens to it if spend doubles?
How do you measure incrementality, and can you share a holdout test result with the client's permission?
Who owns the ad accounts, the data and the creative if we leave?
Which named client in my category and size can I call for a reference?
Who works on the account each week, and what is their experience?
Which networks, marketplaces and affiliate platforms do you operate on, and which do you not?
The interview approach in How to Choose a PR Firm applies here as well, including the reference-call script.
A commerce marketing agency sells growth in sales on retail and marketplace channels, such as affiliate programs, retail media networks and Amazon. It differs from a PR firm because it is paid on sales, ad performance or channel management, not on media coverage.
What is the best Amazon marketing agency?
No single firm is best for every brand. Amazon Growth Lab, Nuanced Media and BellaVix each appear on at least three of the 2026 lists reviewed, and the right choice depends on whether the brand needs ads only or full channel management.
What is the best affiliate marketing agency?
Acceleration Partners, DMi Partners, Hamster Garage, Perform[cb] and Versa Marketing recur across 2026 lists. Acceleration Partners is described as enterprise-focused, and Versa Marketing is described as focused on DTC and e-commerce brands.
What does a retail media agency do?
A retail media agency plans, buys and measures ads inside retailer networks such as Amazon Ads, Walmart Connect, Target Roundel, Kroger Precision Marketing and Instacart Ads. It also reports sales results back to the brand.
Are affiliate agencies the same as influencer agencies?
No. Affiliate agencies run programs that pay partners on sales, while influencer agencies match brands with creators and often charge fees per post. The two overlap when creators are paid by commission, and EPR's influencer agency ranking covers the creator side.
How much does an affiliate marketing agency cost?
One affiliate agency's own guide says most high-performing agencies require a monthly minimum of $3,000 to $5,000 plus performance incentives. That is a vendor claim, so ask each agency for its fee basis in writing.
Do I need an agency to advertise on Amazon?
No. Brands can run Amazon ads in-house, and an agency becomes useful when the catalog, the budget or the reporting becomes too large for one person. Ask what the agency does that an in-house hire would not.
How reliable are commerce agency rankings?
Most rankings are published by agencies that rank themselves or their peers. Use recurrence across several lists as a starting point, then verify each firm with references and a written fee basis.
Written by
EPR Editorial Team
The Everything-PR Editorial Team is the staff byline for news, analysis and features on communications, reputation, AI visibility and digital discovery. Everything-PR has published since 2009. AI tools assist with research and drafting, and every article is reviewed by a human editor before publication. Coverage follows the Editorial Policy, and substantive corrections are noted on the article under the Corrections Policy.
