Alterable
Real-time personalization for every email you send.
About
Most email tools decide what a subscriber sees the second you hit send. Then that content sits frozen, even if the offer expired hours ago or the reader opens it three days later in a different city.
Alterable fixes the content itself. It renders personalized images at the moment of open: countdown timers that actually tick down in the inbox, product recommendations that update per person, maps to the nearest store, scratch-and-win cards, and one-click surveys answered without leaving the email. Everything runs on targeting rules (location, device, weather, time, language) and drops into Klaviyo, Mailchimp, HubSpot, Brevo, and any major ESP with a single snippet of HTML.
No re-platforming, no developer needed. Just emails that finally reflect the person opening them.
We'd love your feedback on what to build next.
That closing line is worth keeping for BetterLaunch specifically, since launch communities respond well to a founder asking for input. If the listing enforces a tagline character limit (a lot of these cap around 60), tell me the number and I'll trim to fit. And if there's a separate short "elevator pitch" field alongside the full description, I can give you a tighter one-sentence version too.
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FounderPlaybooks.
What other founders did to grow.
2722 dispatches from hundreds of founders, pulled from the week's best podcasts.
We saw that about 70 even more% of the people coming through onboarding were saying that they were beginners we did research to validate that so now really we're really focusing the product on that beginner experience the intensity of the classes the complexity of the classes to try to cater for that audience.
75% of Users Are Beginners — So the Whole App Should Be Built for Beginners
Zumba had a brand built on die-hard fans but discovered through onboarding data that 75%+ of app users were self-identified beginners. The correct response was to stop trying to serve all segments and double down on beginner content — simpler choreography, lower intensity — so that audience actually reached the aha moment and stayed.
the revenue per user on the web only paywall variant D was $1.96 on the inapp purchase only that was $29... it's about a 6% drop in proceeds on the web versus the inapp purchase
Web payments at 30% Apple cut is a ~6% wash vs IAP — not the 30% windfall expected
RevenueCat's 4-variant live experiment on Dipsy found web-only checkout netted ~$1.96 per user vs ~$2.03 after Apple's 30% cut on IAP — a 6% gap, not the 30% windfall developers expect. The reason: web flows convert fewer trials despite lower fees. For apps on Apple's 30% standard rate, web billing is worth testing but not the slam dunk the fee savings suggest.
There's a play for whatever you're stuck on.
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Comments
1Hey 👋 I'm Matt, the founder. I got a little obsessed with Movable Ink and wanted that open-time email magic for the rest of us. So I built Alterable. Try the countdown timer first.