File Browser allows you to view the directory/file structure of the target computer, preview files and (if configured) email them.

The File Browser settings can be configured in the "Server Admin > Policies > System > General" section of the Web App.
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You can also configure this setting on the Pulseway Agent itself. However, the Web App Policy settings (if applied to the same machine) will always take precedence over the individual agent settings.

Also, Policies are naturally more convenient for applying such monitoring rules, as they can be applied to multiple machines simultaneously.

To configure this setting on the Agent, go to the "System > File Browser" tab.