Customer.io - Send email based on what people do (or don't do) in your app
Pombo - Email platform for teams and AI agents
Unitpost - Professional, inbox-safe email components & layouts for React developers.
Franz 6 - All your messaging apps in one window - with private AI
Town - The assistant that learns how you work, then gets to work.
Sortail - Self-learning one-click inbox cleanup for Apple Mail
Engineering Event-Driven Messaging at Scale: How Customer.io Processes Billions of Real-Time Triggers
TideSQL - High-performance MariaDB storage engine with advanced indexing and vector search.
Knock agent for Slack - Build, manage, and ship customer messaging from Slack
