Lifecycle email for consumer subscription apps
Turn more signups into
paying, active users.
Inboxx builds lifecycle email systems for consumer subscription apps. Activation, trial-to-paid, retention, and winback, run by direct-response operators who care about conversion, not newsletters.
€250k+ generated through email.
The problem
You're paying to acquire users. The lifecycle is leaking.
You spend to bring users in, then lose too many of them before they ever activate, pay, or stick.
Why it matters
Lifecycle email is the highest-leverage retention channel you own.
$36
average return for every $1 spent on email.
Litmus
25-95%
profit lift from a 5% increase in retention.
Bain & Company
5-25×
more expensive to acquire a user than to keep one.
Harvard Business Review
Up to 40%
of subscription churn is failed payments, and it's recoverable.
Industry benchmarks
What we build
Every journey that turns users into revenue.
Every message is tied to what a user just did, or didn't do. Behavior in, the right email out.
Onboarding & activation
We guide new users to their first real win, the moment they actually feel the value.
Trial-to-paid conversion
We show trial users what they've built and what they'll lose, so they upgrade before it ends.
Free-to-paid upgrades
We catch free users at the right moment, like hitting a limit, and move them to paid.
Failed-payment recovery
We win back the revenue leaking from declined cards and expiring payment methods.
Churn prevention & saves
We reach users before they cancel and give them a reason to stay.
Winback & re-engagement
We bring dormant and churned users back before they're gone for good.
The outcomes
What changes when the lifecycle works.
Why Inboxx
Built by conversion operators, not newsletter senders.
A full lifecycle team, without the headcount
Strategy, copy, design, analytics, testing, and dev-ready trigger specs, built by direct-response email people who understand conversion. You get the output of an in-house lifecycle department for a fraction of the cost.
We never touch your codebase
We audit your app and write the exact event spec your developer needs. They wire it up once, in about an afternoon. Your product and your data stay yours.
What's included
Everything in the full-stack retainer.
Our guarantee
A complete lifecycle foundation, guaranteed.
Strategy, journey maps, copy, design, trigger specs, a QA checklist, reporting, and a testing roadmap. If the agreed deliverables aren't done, we keep working until they are.
Want to see where your app is leaking signups?
Book a call and we'll map exactly where your free users drop off, and what we'd fix first.