Customer.io has rules to match users in various conditions like “hasn’t logged in in 30 days” or “has not connected to facebook”. Users who match conditions receive emails encouraging them to change their behavior. Customer.io measures the effectiveness of those emails and allows its customers to continuously tweak and improve their triggered email campaigns.
Use Frequency to limit the number of times a person can enter an event-triggered campaign, and say good-bye to unwanted emails!
The best transactional messages to help you reduce churn and increase retention: https://t.co/ggfpvT9ciN