User object empty on Post Registration Flow

Hi @Poolshark,

The post-user registration action trigger is designed to notify another system that a user has registered for your application. Use this type of action to execute asynchronous tasks such as adding a user ID to an external system or sending a Slack notification.

More info.

In this case, you can use a post-login action with a conditional to determine whether or not to send the invite/is a first login.