Your ad costs keep climbing, margin is slipping and nobody in-house has time to fix every channel, so you start looking for an ecommerce marketing agency. Match its model to that problem: a profit-focused specialist if margin is the worry, a full-service agency for many channels, or a guarantee-led or divisional model if contract risk concerns you.
The short answer for store owners hiring a growth agency
Most ecommerce marketing agencies sell the same channels: paid social, search, email, SEO and conversion work. What separates them is how they're set up. One works only from a profit model. One has split ecommerce into its own division. One offers a results guarantee with no long-term contract. The rest are broad agencies with ecommerce as one track among many. Decide which of those you want before you book a single call.
The nine agencies below are unranked, and each is described only from its own website. None of them is scored or ranked, and where a site doesn't say something, this page doesn't either.
How these ecommerce agencies are structured
Ecommerce-only. Common Thread Collective is the one agency here that says it works only with ecommerce and DTC brands, and its profit model shapes everything it recommends.
Full-service, multi-channel. WebFX, Hawke Media, Power Digital, Ignite Visibility, Single Grain and Wpromote cover most channels for many industries. Expect breadth; ask how much ecommerce work the team running your account does.
Divisional or guarantee-led. Directive lists Commerce as one of its divisions; Disruptive Advertising leads with a guarantee and no long contracts. Both answer a specific buyer worry, so check the details behind the headline.
A word on fit. If your store is small and you mainly need one channel fixed, a channel-by-channel offer or a lean specialist may serve you better than a large multi-channel retainer. If you're spending across several channels and nobody is joining the dots, a full-service team or an outsourced marketing department makes more sense. And if you've been stuck in a long contract before, put contract terms at the top of your list, not the bottom.
Store numbers to pull before you talk to anyone
Bring your revenue and margin trends, your average order value and repeat purchase rate, and which channels drive sales today. Know your current ad spend by channel and what's working. Have your best and worst selling products listed. If conversion is the problem, check what a good conversion rate looks like for Shopify stores so you can judge any agency's promises. Make sure you own every ad account and analytics property before you grant access.
If you're weighing up how much of this your own team could now handle with AI tools, this guide to AI for ecommerce marketing helps you judge which tasks still need an agency and which can stay in-house.
Nine ecommerce growth agencies, unranked
Common Thread Collective
Ecommerce and DTC specialist working from a contribution-margin model, which is the reason to talk to it if growth has cost you margin.
Directive
Split into Performance, Commerce and Communications divisions, it mainly serves B2B tech and industrial firms, with ecommerce handled through its dedicated Commerce division.
Disruptive Advertising
Covering paid media, Amazon, lifecycle and CRO, it leads with a money-back growth guarantee for qualifying brands, so read the terms closely.
Hawke Media
Presented as an outsourced marketing department, it spans paid social, search, TikTok, web design and Amazon for businesses of all sizes.
Ignite Visibility
With a dedicated Ecommerce page and franchise and multi-location programmes, its breadth may suit a retailer with physical locations as well as an online store.
Power Digital
Privately held growth marketing agency with offices in San Diego, New York and Medellin, combining paid media with PR, affiliate, influencer and data work.
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Single Grain
Separate service pages for ecommerce email, Google Ads, CRO and SEO make it easy to see what you'd be buying if one channel is underperforming.
WebFX
Full digital marketing paired with its own marketing software, plus Walmart advertising and ecommerce web design, with proposals available on request.
Wpromote
Performance and lifecycle marketing agency with AI search and GEO work, worth asking about if you're worried how shoppers find products through AI assistants.
Questions that decide who gets your ad account
Put the same questions to each one. What do you optimise for: revenue, return on ad spend or contribution margin? Who will run my account, and how many ecommerce accounts do they handle? What's the minimum contract, and what happens if I want to leave early? If there's a guarantee, which brands qualify and what counts as growth? Do I keep ownership of my ad accounts, pixels and creative? How will you report, and how often?
On cost, none of the nine sites I looked at publishes a price list, and WebFX says proposals are available on request. So you won't compare fees from their websites. Get a written proposal from each shortlisted agency that splits the monthly fee from your ad spend, lists what's charged separately (creative, landing pages, tools) and states the minimum term and notice period. Two proposals laid side by side tell you far more than one headline figure.
A one-hour test you can run on your shortlist
Take last quarter's numbers: revenue, cost of goods, shipping, ad spend by channel and orders. Work out your contribution margin (revenue minus product, shipping and ad costs) and write it on one page. Send that same page to two or three agencies with one request: show me how you'd raise this figure next quarter, and which channel you'd change first. Then compare the replies. A team that talks about margin and names a channel has engaged with your store. A reply that only promises more revenue or a higher return on ad spend, with no mention of what's left after costs, tells you what they'll optimise for once you've signed. My guide to ecommerce marketing and SEO strategy is useful background before those calls.
Run an agency or service company and want to be considered for a list like this? Featured spots and reviews here are paid partnerships. Here's how to partner with me.
Frequently asked questions
What does an ecommerce marketing agency do?
It runs some or all of your growth channels: paid social, search ads, email and SMS, SEO, conversion work and creative. Some focus only on online stores; others serve many industries.
Should I choose an ecommerce-only agency?
A specialist knows store metrics like margin, repeat purchase and order value inside out. A full-service agency may offer more channels. Ask how much of the team's work is ecommerce either way.
Are results guarantees from agencies reliable?
Read the terms. Guarantees usually apply only to qualifying brands and specific measures. Ask what qualifies, what counts as success and how a refund is handled.
Who should own my ad accounts?
You should. Keep ownership of ad accounts, analytics, pixels and creative files, and give the agency access. That way you can switch agencies without losing history.
How long before an ecommerce agency shows results?
Paid channels can move quickly; SEO and email build over months. Agree what success looks like for the first quarter before you sign.
How much does an ecommerce marketing agency cost?
Most agencies don't publish their fees, so you'll usually need a written proposal. Request one that separates the monthly fee from your ad spend, lists any extra charges and states the minimum contract term.
