We’re excited to announce a powerful enhancement to App Inbox — it now supports user-level message continuity across devices and reinstalls!

What’s Changed

Previously, App Inbox messages were tied to individual devices. This meant users would lose access to their past messages if they switched devices or reinstalled the app. Now, with User-Level App Inbox, messages follow the user — not the device.

What This Means for You

With this update, your users can: Access App Inbox messages on any device they’re logged into Retain messages even after uninstalling and reinstalling the app Enjoy a seamless, consistent messaging experience across platforms This enhancement significantly improves message visibility, drives engagement, and increases the value of every notification sent.

Why It Matters

App Inbox is one of the most underutilized but high-impact messaging channels. By enabling user-level delivery, you can: Extend the lifespan of important messages Improve engagement for users who miss push notifications Support more personalized and persistent campaigns across sessions and devices

What You Need to Do

No changes are required to your campaign setup. Your existing App Inbox UI will continue to work. Just make sure your mobile app is using the latest App Inbox SDK versions: Android SDK: 3.8.0+ & iOS SDK: 3.5.10+

Pro Tip: Pair App Inbox with your push notifications to keep important messages accessible — even if users miss or dismiss the push.

Note: Clients with older versions of App Inbox SDK will continue to support device-level App Inbox behaviour.

For more information, refer here.