When you create a new follow-up email the first step to do is to choose a trigger. This is the action that will trigger your follow-up and send emails to users. If you're thinking about a trigger that is not listed in this page you can always contact us by clicking on the button suggest an idea to share with us your idea.
To select a trigger, it's really simple, you just need to click on the trigger that you want and then click on the create button.
WooCommerce purchased: This trigger is when an order status is changed in WooCommerce
Hikashop purchased: This trigger is when an order status is changed in Hikashop
Birthday: This trigger works with the daily cron
User creation: When a new user is created
User subscribe: When a user is subscribing to lists