Iterable

Iterable is a high-performance customer communication platform engineered for large-scale, cross-channel engagement. Its technical architecture is built on a flexible, schemaless data model that allows for real-time ingestion of massive user datasets via APIs and webhooks. By 2026, Iterable has solidified its market position by deeply integrating 'Iterable AI' (formerly Brand Intelligence), which leverages predictive modeling to determine the optimal channel, time, and frequency for messaging. Unlike legacy ESPs, Iterable functions as a data-centric hub that unifies email, SMS, push notifications, in-app messaging, and webhooks into a single visual workflow. Its 'Catalog' feature enables marketers to store and query relational metadata—such as product inventories or store locations—without requiring a separate database, allowing for hyper-dynamic content injection at the point of send. As an enterprise-grade solution, it prioritizes high throughput and low latency, making it the preferred choice for digital-native brands requiring sophisticated lifecycle orchestration and real-time experimentation across complex global audiences.