Who receives an error email when a flow interview fails?

When a flow interview fails in Salesforce, the error email is sent to the admin who last modified the flow. This design allows for efficient troubleshooting and resolution of flow-related issues, as the admin is typically the individual most knowledgeable about the flow's logic and purpose. By notifying the last modifying admin, Salesforce ensures that those with the direct responsibility for the flow have visibility into errors that could affect data integrity or user experience.

In this context, the other options do not accurately reflect the design intent of error notifications for flows. Although the user who executed the flow may experience the consequences of the failure, they do not receive the error emails, as those are intended for the administrative role responsible for maintaining the flow. The system administrator being singled out might suggest all admin roles would receive notification, which is not the case; notifications are specific to the latest modifier. Finally, sending error emails to everyone in the organization would lead to unnecessary information overload and could detract from the role of the admin in addressing flow errors effectively.