What is retention marketing, and why does it matter for fast-growing brands?
Retention marketing keeps the customers you already paid to acquire engaged across every stage: onboarding, first purchase, repeat purchase, and reactivation. Acquiring a new customer costs 5 to 25 times more than keeping one, and the revenue lives in the repeat purchase, not the first order. A 5% lift in retention can raise profit 25 to 95%.
How is Propel different from other retention and lifecycle marketing agencies?
Most agencies send on a calendar. Propel runs a state-driven retention system across the key moments between a customer's first order and their next one. Senior lifecycle strategists plus proprietary AI agents read live customer state (order, usage and payment) so the right message fires at the right moment. We are not a tool, we are the team, the strategy, and the execution engine, backed by a 30-day money-back guarantee.
What platforms and channels do you work with?
We are platform-agnostic across the major customer engagement and email marketing tools: Braze, Customer.io, Klaviyo, MoEngage, CleverTap, Iterable, and more, plus SMS. As a Platinum Customer.io Partner and Braze Partner, we bring certified-level expertise, and we federate your product, billing, and support data into a single customer record so sends fire on real state, not a generic schedule.
How fast can we see results?
Weeks, not quarters. Because the system targets specific leaks (onboarding drop-off, the first missed repeat purchase, involuntary churn), most brands see week-4 and week-12 retention move inside the first 60 days, which is why we back it with a 30-day money-back guarantee.
What does the engagement look like day-to-day?
A senior lifecycle team works as an extension of yours on strategy, build, and execution, while the AI agents run routine check-ins and escalate complex threads to your team. Communication runs over Slack, with weekly performance updates and monthly strategic reviews, and your team keeps full visibility and approval on every message.
What if it's not the right fit?
The journey audit is free and yours to keep, and we agree the retention metric and measurement window up front, so you are never locked into a number nobody defined. It is backed by a 30-day money-back guarantee: if it does not feel right, get your money back. No fine print, no hassle.
We build retention systems for fast growing brands.
Propel is the growth partner that improves LTV, reduces churn, and drives repeat revenue. Done-for-you service, for fast growing brands doing $150K+/mo

Trusted by 50+ Fast-Growing Brands Globally
You need the customers you already paid for to come back
Your Ads work. Your Checkout converts. Then, somewhere between the first order and the second, most of the customers quietly churn. You're missing a system
By the time you hire a lifecycle marketer, we will ship 47 campaigns!
From audit to revenue — built for speed.
We audit your lifecycle, ingest your data, and hand you a prioritized roadmap.
We flag what's misconfigured, what's missing, and hand you a fix-list ranked by revenue impact.
We map your lifecycle across email, SMS, push, and in-app — every move tied to a revenue outcome.
AI-powered subject lines and send-time optimization get your first campaigns live within a week.
Custom dashboards and monthly reports tie every campaign back to revenue, retention, and LTV.
Emails that look good and perform.
Design that guides the eye, earns trust, and drives action.
For retention revenue, not email sends. That’s the difference.
Blank Klaviyo flows. Generalist agency decks. ChatGPT prompts. None of them keep a customer past the second purchase. Propel is the system that does.
Lifecycle Strategy in Action
From 53% onboarding lifts to 1M+ emails/month — see how we’ve moved the needle for brands like yours.
Try us for 30 days. Love it or get your money back.
Qualified brands can try our services for 30 days. If it doesn’t feel like the right fit get your money back. No fine print, no hassle.
Frequently Asked Questions
Everything you need to know about the product and billing. Can’t find the answer you’re looking for? Please chat to our friendly team.
Still have questions?
Can’t find the answer you’re looking for? Please chat to our friendly team.
Book your retention audit
Take your customer journey through retention experts who've grown $100Mn+ brands
Here’s what we’ll dig into:
Where your retention flows are underperforming
How intent driven messaging can improve repeat purchase and onboarding funnels
Quick wins your team can action this quarter
Repeat revenue estimate that you're leaving on the table
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