Subscription growth has a shape: acquisition fills the bucket, retention decides whether anything stays in it. The brands that scale past eight figures usually aren’t better at ads - they’re better at acquisition offers, growing subscriber value, reducing churn, and the operations underneath all three. That work is specialized, and very few agencies actually do it well.
Different agencies own different pieces of it, too. Some build the lifecycle and email retention systems, some optimize the subscription offer itself, some optimize the back end subscription operations, like the rewards journey, cancel flow, selling plans and so on. So instead of another list of fifty logos, here are the five agencies we’d actually point a subscription brand toward - and exactly which problem each one is best at solving.
The Best Agencies for Subscription Brands
- YOCTO - end-to-end subscription retention for $5M-$150M brands: offer, funnel, churn, and the lifecycle systems that run them
- 100 Celsius - subscription offer, funnel, and churn optimization for brands with 5,000+ active subscribers
- The Art of eComm - retention and loyalty strategy for ecommerce brands pushing toward nine figures
- Boring Ecom - a fractional retention team for eight- and nine-figure consumable brands
- New Standard - full-service retention across email, SMS, push, and direct mail for scaled DTC
How Do We Know These Are the Best Agencies for Subscription Brands?
Because we’re not guessing. These are teams we know firsthand - agencies we’ve traded notes with, overlapped in brands with, and watched deliver for subscription businesses over time. Every one of them earns their spot on a narrow specialty, and that’s how this list is written: not “who’s biggest,” but who to call for which problem.
YOCTO
YOCTO owns the whole retention side of a subscription P&L: the offer and plan structure, the funnel that sells it, the cancel and dunning flows that defend it, and the lifecycle email and SMS programs that compound it. One team runs both the analysis - cohort LTV, payback, churn drivers - and the execution, with Elite-level Klaviyo builds wired into Loop, Recharge, or Skio. The methodology is public - the LTV Parthenon, nine numbers that decide customer lifetime value - and every engagement is built around moving them. Engagements are simple: three month-to-month packages with no lock-in, so scope and price are clear before you sign.
Who We Work With
Subscription and DTC brands generating $5M-$150M a year, mostly in health, wellness, beauty, and CPG, across the US, UK, and Europe. Brands like Healf, BetterMe, Evereden, and Jimmy Joy.
Results We’re Proud Of
- -79% subscription churn for Orbio World
- 5× email revenue with 40% fewer unsubscribes for Healf
- +92.5% email and +141% SMS revenue for Evereden
- +94.9% revenue growth for Jimmy Joy
Full write-ups live in our case studies. And the validation isn’t only ours - the platforms we build on have published their own case studies on YOCTO client work:
YOCTO at a Glance
- Klaviyo Elite Partner and Platinum-tier Loop Subscriptions partner
- Specialties: subscription offer & funnel optimization, churn and cancel-flow work, lifecycle email and SMS, cohort LTV analytics
- Industries: health & wellness, beauty, supplements, CPG, subscription DTC
100 Celsius
100 Celsius works on the subscription itself: plan pickers, offer and take-rate testing, portal and cancel-flow optimization, early-churn mitigation, and the analytics to measure all of it. Founder Bryan Starck advises roughly a million active subscriptions across the portfolio, which gives the team something most agencies can’t offer - cross-brand pattern recognition on what actually moves take rate and churn. One client lifted subscription take rate from ~35-40% to 75%.
Who They Work With
Shopify DTC brands with 5,000+ active subscribers running Skio, Recharge, or Stay AI - teams like Prose, mindbodygreen, Javvy, Magic Mind, and Brēz.
100 Celsius at a Glance
- Specialties: subscription offers and funnels, plan pickers, cancel flows, retention analytics
- Best fit: brands with an established subscriber base ready for systematic optimization
- Led by founder and strategy lead Bryan Starck
The Art of eComm
The Art of eComm is Thomas Lalas - known in DTC circles simply as “The Retention Marketer.” While everyone else on this list sells execution, Thomas sells clarity: retention and loyalty strategy for brands pushing toward nine figures, from someone who literally wrote the book on it - Retention Economics. Sendlane founder Jimmy Kim put it plainly: “Thomas is one of the very few that can be truly called a retention marketer.”
Who They Work With
Eight- and nine-figure ecommerce brands - and the operators inside them - who need the retention and loyalty strategy right before more execution can help.
The Art of eComm at a Glance
- Specialties: customer retention and loyalty strategy for scaled ecommerce brands
- Author of the Art of eComm trilogy: acquisition, retention, loyalty
- Led by founder Thomas Lalas
Boring Ecom
Boring Ecom is a fractional retention team, not an email agency - their words, and the distinction matters. Operators who’ve held director-level retention seats at eight-figure brands embed with your team and own payback models, LTV analysis, offer testing, and subscription save rates. The receipts: a 300% average increase in subscription save rate, $1M+ in monthly recurring revenue saved, and $100M+ in retention revenue generated.
Who They Work With
Eight- and nine-figure subscription brands selling consumables or managing high SKU counts - the roster includes Dollar Shave Club, Goli, Feastables, and Truvani.
Boring Ecom at a Glance
- Specialties: payback and LTV modeling, subscription saves, offer testing, retention KPI tracking
- Model: fractional, embedded senior operators rather than a managed-service agency
- Led by Joseph Siegel
New Standard
New Standard runs retention as a full-service program - email, SMS, mobile push, even physical mailers - under one strategy they call Retention 360°. They’ve served 100+ DTC brands, and the client list reads like a DTC hall of fame: True Classic, AG1, Caraway, dbrand, Obvi, Ruggable. Recent numbers include a 12% LTV increase and 23% higher repurchase rate for True Classic, $6.1M in incremental revenue for BYLT Basics, and 68% email revenue growth for dbrand.
Who They Work With
Scaled DTC brands that want every retention channel planned, produced, and reported by one senior team.
New Standard at a Glance
- Specialties: retention strategy, email & SMS, mobile push, direct mail
- Track record: 100+ brands served with a claimed 100% client retention
- Best fit: mid-to-large DTC brands past the single-channel stage
Which Agency Should You Call First?
Match the agency to the bottleneck, not the brand name. If you want a specialist consultancy pressure-testing your subscription against a million-subscriber portfolio, start with 100 Celsius. If you need the retention and loyalty strategy set by someone who wrote the books on it, Thomas Lalas at The Art of eComm. If you’re at eight or nine figures and want senior retention operators embedded in your team, Boring Ecom. If you want every retention channel run as one program at scale, New Standard. And if you want one partner to own retention end to end - offer, funnel, churn, and the lifecycle program that ties them together - that’s YOCTO.
Our Recommendation
Every team on this list earns its lane - that’s why they’re here. But if you want the shortest path to fixing your subscription economics, start with YOCTO. You get one partner that runs both the analysis and the execution, client results that Klaviyo, Skio, Loop Subscriptions, and Bubblehouse have published case studies on themselves, and simple month-to-month packages with no lock-in. The first step costs nothing: run the free subscription diagnostic and see exactly where your program is leaking revenue before you commit to anything. Already working with an agency? Here’s how to switch without losing revenue. And if we’re genuinely not the right fit, we’ll say so - and point you to whichever team on this list is.
Frequently Asked Questions
What does a retention agency for subscription brands actually do?
Everything that grows the revenue you keep: subscription offer and plan structure, cancellation and dunning flows, win-backs and loyalty, lifecycle email and SMS, and the cohort LTV reporting that ties it all together. The best ones own both the analysis and the execution - a strategy deck without shipped flows changes nothing.
How much does a subscription retention agency cost?
Across the market, anywhere from a few thousand per month at boutique shops to five figures at enterprise agencies - and most won’t tell you until the third call. Ours is straightforward: packages run €5,500-€10,000 per month, month-to-month, with 10-15% off on longer commitments. More on what drives agency pricing in our Klaviyo agency pricing guide.
Should we hire an agency or build retention in-house?
A senior in-house retention team usually costs more than an agency retainer and takes two or three quarters to hire - and it still won’t have cross-brand pattern recognition on day one. In-house wins on deep brand context; agencies win on speed and benchmarks. We’ve broken down the full math in agency vs. in-house.
When is the right time to bring in a retention agency?
When acquisition keeps growing but revenue doesn’t compound: flat repeat rates, churn creeping up, failed payments nobody owns. If recurring revenue is a meaningful share of your business and no one owns retention full-time, you’re already late.
How fast should results show up?
Execution ships fast - save systems, dunning fixes, and core flows go live in weeks, and their leading indicators (save rate, recovered payments, flow revenue) show within 60-90 days. Cohort-level LTV is slower by nature: it compounds over billing cycles, so judge it in quarters, not weeks.
What KPIs should a retention agency be accountable for?
Not opens and clicks. Subscriber churn - voluntary and involuntary - save rate, cohort LTV and payback, and email and SMS revenue share. We track nine numbers across every engagement; the framework is public in the LTV Parthenon.