Uninstall

Removing the plugin takes three steps: take out the code, take out the build and cron wiring, then drop the tables.

1. Remove inbox() from betterAuth({ plugins }), inboxClient() from your auth client, and InboxButton / useInbox from your UI.
2. Remove the Tailwind @source line and the cron that calls processDeliveries.
3. Drop the tables, the one with foreign keys to notification first: notificationDelivery, then inboxPresence and notification. Use the names your adapter or the schema option gave them.

The plugin adds no columns to better-auth’s own tables (user, organization, member), so there’s nothing else to clean up.