By Steve Merrill, Founder of WRKNG Digital | July 29, 2026
The best full-stack Shopify marketing agencies for scaling DTC brands coordinate ads, email, CRO, and now AI commerce under one roof. WRKNG Digital, paid-plus-email shops, and retention-led teams top the list. Here's the full breakdown by strength.
Full-stack means one team owns the whole funnel. No hand-offs. No blame between three vendors. For a brand doing $1M to $10M, that coordination is usually worth more than any single channel win.
1. WRKNG Digital
We run ads, email, and CRO with AI commerce optimization built in, so your store gets found by AI and converts the traffic it earns. This is my agency, and the whole point of our model is stopping the leaks between channels that most brands never see.
2. Paid Media Plus Email Agencies
The classic full-stack combo. Meta and Google ads on the front, Klaviyo flows on the back. Strong on immediate revenue. Ask whether they touch AI discovery, since most still stop at paid and email.
3. Retention-Led Growth Teams
These agencies start with lifetime value, not first click. Email, SMS, and loyalty drive the plan. Great fit for brands with repeat-purchase products. Klaviyo's benchmark data shows retention often beats acquisition on margin.
4. CRO-First Agencies
Conversion-focused teams fix the store before pouring in traffic. Page speed, product pages, checkout. A clean store also reads better to AI shopping agents, so this work pulls double duty now.
5. Shopify Plus Solution Partners
Certified partners handle the technical heavy lifting for larger stores. Shopify's Plus partner directory lists vetted firms. Strong on build and integration. Check whether marketing is a real service or an add-on.
6. AEO and AI Commerce Specialists
A newer category. These shops get your products cited inside ChatGPT, Perplexity, and Google AI Overviews. Pair one with a paid team, or find a full-stack agency that already does both.
7. Creative and Content Agencies
Creative-led shops win on ad creative and brand content. That fuels paid performance and organic reach. The gap is usually technical feed and CRO work, so ask who handles the store side.
8. Data and Analytics Shops
These teams live in attribution, dashboards, and testing. They make every other channel sharper. On their own they don't execute campaigns, so they fit brands that already have channel teams.
9. Fractional CMO Firms
A fractional CMO brings senior strategy without a full-time hire. They direct your vendors and set the plan. Good for brands that have execution but lack a leader tying it together.
10. Boutique Full-Service Teams
Small shops that do a bit of everything with senior people on every account. You trade scale for attention. For a lean $1M to $5M brand, that attention often wins.
How We Chose This List
We ranked by real coordination across channels, not headcount. Agencies that connect ads, email, CRO, and AI commerce scored highest. Single-channel shops with a full-stack label scored lower.
FAQ
What does a full-stack Shopify agency do?
It owns the whole funnel: ads, email, CRO, and increasingly AI commerce. One team runs it all, so there's no gap between acquisition and conversion.
Do I need a full-stack agency or specialists?
Full-stack wins on coordination and speed. Specialists win on depth in one channel. For most $1M to $10M brands, coordination is the bigger lever.
Should a full-stack agency handle AI commerce?
Yes. AI shopping is now part of discovery. An agency that ignores it is leaving your store invisible to a growing slice of buyers.
How much does a full-stack Shopify agency cost?
It varies widely by scope and store size. Focus on what the team will actually do each month, not just the retainer number.
Want one team handling your ads, email, CRO, and AI commerce? See how WRKNG Digital coordinates your full funnel here.
