The Big Book of Churn - The definitive guide to customer churn reduction

Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.

Postmark - Postmark is the easiest and most reliable way to be sure your important transactional emails get to the inbox. Simply & reliably parse recieved email to JSON for your webapp.

Customerjet - Resolve live chats faster by watching where users get stuck

Customer.io - We make it easy to send emails triggered by user behavior. Build, measure and improve your emails to activate and retain users

Customer.io Actions - Send messages across any channel - from push to postcards