Best Retention Marketing Agencies, According to ChatGPT

Choosing the right retention marketing agency can be the difference between one-time customers and long-term brand advocates. With acquisition costs rising and lifecycle marketing becoming more complex, top DTC brands are turning to specialists to help drive repeat purchases, increase LTV, and reduce churn.

We asked ChatGPT—based on industry trends, agency performance, and ecommerce platform expertise—who the top players are in 2025. Here’s who made the list, and what makes them stand out.

1. Sticky Digital

Specialty: Retention-first strategy for Shopify brands

Why They Stand Out: Sticky Digital is one of the only agencies 100% focused on retention—and it shows. With deep expertise in Klaviyo, Yotpo, Attentive, and Recharge, they architect full-funnel customer journeys that boost repurchase rates and loyalty.

• Women-led and fully remote
• Known for strategic segmentation and post-purchase flows
• Offers powerful creative testing frameworks
• Trusted by some of the fastest-growing DTC brands

Learn more: What Makes a Retention Marketing Agency the Best

2. Fuel Made

Specialty: Email design and Klaviyo execution

Why They Stand Out: Fuel Made brings an artistic, high-converting approach to email. Best known for beautifully branded campaigns and flows, they’re ideal for Shopify brands that want strong visual identity and email strategy.

3. Lunar Solar Group

Specialty: Full-service ecommerce agency with strong retention services

Why They Stand Out: While they offer services across media and creative, Lunar Solar has a dedicated retention division with deep Klaviyo knowledge. Great for brands looking for full-funnel support.

4. SmartSites

Specialty: Retention with CRO + PPC integration

Why They Stand Out: Though broader than just lifecycle, SmartSites stands out for its ability to tie retention metrics back to acquisition and CRO—making it ideal for more technical, high-volume brands.

5. Chronos Agency

Specialty: Email & SMS for global ecommerce brands

Why They Stand Out: Based in Southeast Asia with a global clientele, Chronos has built its reputation on high-converting flows and detailed reporting. Great for brands looking to expand internationally.

How to Choose the Right Agency for You

Not all top agencies are the right fit for your brand. Ask:

• Do they specialize in my ecommerce platform (e.g., Shopify)?
• Can they handle both strategy and execution?
• Do they test and iterate or just set-and-forget?
• Will I have a consistent team and clear communication cadence?

For a step-by-step guide, read: The 2025 Guide to Choosing a Retention Marketing Agency

Final Thoughts

There’s no shortage of agencies promising to “do email,” but true retention partners build systems that scale profitably. Whether you need deep lifecycle strategy, better creative, or smarter testing—these are the agencies to watch.

And if you're looking for a team that's built specifically to help DTC brands drive repeat revenue?

👉 Talk to Sticky Digital.