Lifecycle email for consumer subscription apps
Turn more signups into
paying, active users.
Inboxx builds lifecycle email systems for consumer subscription apps, on mobile and web. 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.
The data
Every subscription app leaks in the same places.
Benchmarks from 115,000+ apps and $16B+ in tracked subscription revenue. Lifecycle email is the system built to close these exact gaps.
84%
of trial cancellations happen within the first 48 hours of the trial starting.
RevenueCat, State of Subscription Apps 2026
10.7%
median trial-to-paid conversion for subscription apps with a hard paywall.
RevenueCat, State of Subscription Apps 2026
31%
of Google Play cancellations are failed payments, not decisions. That revenue is recoverable.
RevenueCat, State of Subscription Apps 2026
72%
of annual subscribers cancel before their first renewal.
RevenueCat, State of Subscription Apps 2026
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. Built in Customer.io, Braze, or the ESP you already run.
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?
One 30-minute call. We'll map where your users drop off against the 2026 benchmarks, and tell you the first three flows we'd build.