Full Answer
Server-side API for backend events, native SDKs for in-app tracking. Email-based profile matching.
Yes, via server-side Track/Identify APIs from app backend. Native iOS/Android SDKs available (klaviyo-swift-sdk, klaviyo-android-sdk) for in-app tracking. Use server-side for transactional events (purchases), SDK for in-app behavior (screen views, engagement). Email remains primary identifier.
Server-side API for backend events, native SDKs for in-app tracking. Email-based profile matching.