Customer.io Core Features Overview Implement Customer.io's key platform features: transactional emails/push (password resets, receipts), API-triggered broadcasts (one-to-many on demand), segment-driving attributes, anonymous-to-known user merging, and person suppression/deletion. Prerequisites - installed - Track API credentials ( + ) - App API credential ( ) — required for transactional + broadcasts Instructions Feature 1: Transactional Email Transactional messages are opt-in-implied messages (receipts, password resets). Create the template in Customer.io dashboard first, then call the API w…