Retention marketing agency working on Klaviyo, Omnisend, Brevo and Attentive
Retention marketing for Shopify brands that outgrew the newsletter.
Email and SMS flows written against your order data, a campaign calendar built around your seasons, and one monthly number that says what each of them earned — for brands doing $500K to $5M+.
Trusted by DTC, home and beauty brands
Retention marketing agency
A senior team that runs retention the way an in-house lifecycle lead would.
Retention Control builds and runs email, SMS and lifecycle programmes for Shopify and DTC brands in the US, UK, Ireland and Europe. Every flow is written against your order data, the person you meet on the first call is the person who runs your account, and every engagement starts with a free audit and a written plan.
About the agencyPlatforms and profiles
·07
Klaviyo- Platform we work on
Klaviyo-native flows for Shopify catalogues 
Omnisend- Platform we work on
Brevo- Platform we work on
Attentive- Platform we work on · SMS
Shopify Partners- Shopify Partner
Clutch- Company profile
The Manifest- Company profile
What we do
What Shopify brands hire us for.
Scoped around your store rather than sold as a package. The audit says which of these apply to you and what each one earns.
All services- 01
Email retention marketing
Seven flows written against your order data, a campaign calendar built around your seasons, and a monthly number that says what each one earned.
- 02SMS
SMS retention marketing
Restock alerts, short flash windows, delivery updates and time-critical win-back — with consent capture that holds up and send rules that respect quiet hours.
- 03Ecommerce
Ecommerce retention programme
Flows that know your products, campaigns that merchandise, reorder cycles read from real order data, a testing programme and a revenue report — one team, one monthly fee, from $3,500..
- 04DTC
DTC retention marketing
Direct-to-consumer brands win or lose a customer in the first three months.
- 05Customer
Customer retention & win-back
Churn prediction from your order data, reactivation programmes that do not race to the bottom on discounts, and a loyalty programme designed around the behaviour you want — not the points you can afford..
- 06Voice
AI voice agents New
An AI agent that phones your customers at the moments a text gets ignored: the cart they left, the restock they asked for, the payment that failed.
Recent work
Email built for 150+ Shopify stores.
Flows and campaigns we wrote and designed. Every number in the verified-numbers cells is client-confirmed before it goes on the page.
See every email in full Also on this site: Petworld International, Myntgift, Matter of Monday — and 150+ Shopify stores whose results sit under NDA.
How we work
How an engagement runs, week by week.
Six weeks from the first call to flows live on most accounts. Every step ends with something written down.
Week 1
We read your account before we touch it.
Where the revenue is leaking
Every flow, every campaign, list health, deliverability, segment logic and the revenue each piece attributes. You get the gaps ranked by money, not by opinion.
- 01Flow-by-flow revenue and send volume
- 02List capture, engagement and suppression health
- 03Deliverability: domains, complaint rate, inbox placement
- 04Segment logic against actual order data
- You get: A written audit with the first 90 days planned.
Week 2
RFM segments from your orders, and a calendar built around your peaks.
Segments and the calendar
Recency, frequency and monetary tiers from real order history; lifecycle stages; a campaign calendar that starts with your seasons, not a template.
- 01RFM and lifecycle segmentation
- 02Offer ladder by segment (who gets a discount, who never does)
- 03Send-time and frequency rules
- 04Campaign calendar for the next quarter
- You get: A strategy document your team can run without us.
Weeks 3–5
The core flows, written and designed for your brand.
Flows and templates
Welcome, browse and cart abandonment, post-purchase, replenishment, win-back and VIP — each with copy, design, timing and the split tests already planned.
- 01Copy and design per flow, on-brand
- 02Trigger, filter and timing logic checked against real orders
- 03Templates your team can reuse for campaigns
- 04SMS steps where they earn their place
- You get: Flows live, documented, with QA screenshots.
Week 6
Ramped sends, warmed domains, no spike.
Go-live without a deliverability hit
New flows go live in stages so engagement stays high and the sending reputation you have is protected. Campaigns start on the calendar from strategy.
- 01Staged rollout by segment
- 02Domain and IP warm-up if needed
- 03First campaigns on the new calendar
- 04Reporting dashboard set up
- You get: Everything running, with a baseline recorded.
Monthly
Subject lines, offers, timing and creative — one variable at a time.
A/B tests with a hypothesis
Every test has a written hypothesis and a minimum sample. Winners roll into the flows; losers are documented so nobody re-tests them.
- 01Subject line and preview text
- 02Offer type and depth by segment
- 03Send time and flow delays
- 04Design and layout variants
- You get: A test log with results and the next tests queued.
Monthly
One report: what each flow and campaign earned, and what changes next.
Revenue, not open rates
Attributed revenue by flow and campaign, list growth, repeat-purchase rate, email and SMS share of store revenue — and the plan for next month.
- 01Revenue by flow and campaign
- 02Repeat rate and LTV movement
- 03List and deliverability health
- 04Next month’s calendar and tests
- You get: A monthly report and a 30-minute review call.
Why brands choose us
Six reasons brands pick Retention Control over the big lifecycle agencies.
The generalists sell a channel. We run a system, report it on revenue, and put the price on the page.
- 01
Retention only
No paid media, no web builds. Every segment, flow and report is written against Shopify order data — which is why the flows go live in six weeks.
- 02
Works on four platforms
Klaviyo, Omnisend, Brevo and Attentive. Platform choice follows your catalogue and list, not our convenience.
- 03
Reported on revenue
Attributed revenue by flow and campaign, repeat rate and email/SMS share of revenue, monthly. Open rates are a diagnostic, not a result.
- 04
Written down, every step
Audit, strategy, test log, monthly report. If we disappeared after week two you would still have a plan your team could run.
- 05
The price is on the page
Two tiers, $3,500 and $5,500 a month, both starting with a free audit that tells you which one you need.
- 06
No lock-in
Month to month after the first 90 days. You keep us because the report says so, or you take the documented system in-house.
Engagement options
Two tiers. The price is on the page.
Month to month after the first 90 days; both start with the free audit.
Full pricingA 60-minute call with your account open: every flow, campaign and segment read, the gaps ranked by revenue, written up the same day.
Free60 minutes
No pitch deck · if we are not the right fit, we say so
- 60 minutes, on a call, with your account open
- A written summary of the gaps, ranked by revenue
- No pitch deck. If we are not the right fit, we say so
Tier 1 · per month
For brands doing $500K–$2M a year.
$3,500
Month to month after the first 90 days · everything below included
- Full flow stack: welcome, browse, cart, post-purchase, replenishment, win-back, VIP
- Monthly campaign calendar, written and designed
- Segmentation and list health management
- Deliverability monitoring
- Monthly revenue report and review call
Most scaling brands
Tier 2 · per month
For scaling brands at $2M+.
$5,500
Month to month after the first 90 days · everything below included
- Everything in Tier 1
- SMS strategy, consent capture and flows
- Structured A/B testing programme with a test log
- Quarterly lifecycle deep-dive and re-segmentation
- Loyalty and VIP programme design
- Priority turnaround on campaigns
Brands above $10M, multi-store groups and platform migrations are scoped individually after the audit.
The stack
We only run retention on the tools that make a Shopify store repeat.
The App Store has thousands of options. We work with a short list we have integrated many times, from email and SMS to subscriptions, reviews and loyalty.
platform
email and SMS
email and SMS
email
SMS
subscriptions
loyalty
reviews and loyalty
support
Questions
Frequently asked questions
What is a retention marketing agency?
A retention marketing agency designs and runs the systems that turn first-time buyers into repeat customers: automated email and SMS flows, segmentation, campaigns, loyalty and win-back, measured on repeat purchase rate and lifetime value. Retention Control is a retention-only agency for Shopify and DTC brands, working on Klaviyo, Omnisend, Brevo and Attentive.
What retention marketing covers Eight retention marketing agencies compared
What does a retention agency actually do?
Four things. It builds lifecycle automation (welcome, abandonment, post-purchase, replenishment and win-back flows), runs email and SMS campaigns on a calendar, segments the list from real order data so each message fits the buyer, and reduces churn by catching customers as their buying pattern breaks. All of it is reported on attributed revenue, not open rates.
How much does a retention marketing agency cost?
Specialist retention agencies usually charge between about $3,000 and $10,000 or more a month on retainer, depending on channels and volume. Ours is published: Tier 1 is $3,500 a month for brands doing $500K to $2M a year, Tier 2 is $5,500 for $2M and above with SMS and testing. Both start with a free 60-minute audit.
Is it worth hiring a retention agency instead of doing it in-house?
Usually, once repeat revenue matters but a full-time lifecycle lead is not yet justified. A senior in-house lifecycle marketer typically costs more than either tier once salary and tools are counted, and one person rarely covers strategy, copy, design, build and deliverability. Run the ROI calculator first; if the gap it shows is smaller than the fee, we will say so on the audit call.
Which brands are a good fit for a retention agency?
Three things decide it: business model, platform and revenue. We work with Shopify and DTC brands selling products people buy more than once, on Klaviyo, Omnisend, Brevo or Attentive (or willing to move), doing roughly $500K a year or more. Below that the flows are still worth building, but a monthly retainer usually is not.
Which platforms?
Klaviyo, Omnisend and Brevo for email; Attentive or Klaviyo SMS for text. We work on all four. If your current platform cannot do catalogue-aware flows properly, the audit says so before we build.
How long until the flows are live?
Audit in week one, strategy in week two, the seven core flows built and QA’d by week five, launched in stages in week six. Campaigns start on the new calendar from week two.
How do you measure success?
Attributed revenue from flows and campaigns, repeat-purchase rate by cohort, and email/SMS share of total store revenue — the three numbers on the first page of every monthly report.
Retention experts
Let's talk email, SMS and the repeat revenue you actually want.
We work on Klaviyo, Omnisend, Brevo and Attentive. Ready when you are: talk to the person who will run your account, not a sales rep.
Get in touch