Customer.io - Send email based on what people do (or don't do) in your app
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
Fillo - Never Build Another Form by Hand
