What is a required element to send reports via email in FortiAnalyzer?

To send reports via email in FortiAnalyzer, configuring a mail server is essential. This setup provides the necessary infrastructure that allows FortiAnalyzer to connect to an email service, facilitate the sending of reports, and ensure that the reports reach their intended recipients. Without a properly configured mail server, the system would have no means to deliver emails, making this a fundamental step in the process.

In contrast, while setting a report frequency determines how often the reports are generated and sent, it does not establish the means of sending those reports. Defining access permissions relates to user management and does not directly influence the email functionality needed to distribute reports. Uploading to a cloud service refers to the storage of reports in an external environment, which is unrelated to the email delivery process. Thus, the correct answer highlights the crucial prerequisite for enabling email report functionalities in FortiAnalyzer.