You may choose to receive any or all of the following events:
The flow is initially loaded.
The flow has been completed because the user completed all steps or reached a terminal step.
A step is loaded, even if for a second time, such as with backward navigation.
A step is completed (all the required answers were provided and the user clicked next).
The responder is redirected to a URL outside of your flow.
The email identifying the user has been collected.
For this to be triggered, the email question collecting the answer must have a data classification of responder_email, since a single flow might collect multiple email addresses.
The phone number identifying the user has been collected
For this to work, the phone question collecting the answer must have a data classification of responder_phone, since a single flow might collect multiple email addresses.
The above events will be included in your answers payload, but library variables can also be added. Library variables collect data based on the built-in attributes of a responder's environment (i.e. is_mobile?) and context (i.e. StepID).