Comprehensive and Detailed Explanation From Exact Extract of Forescout Platform Administration and Deployment:

According to the Forescout Administration Guide, additional recipients for the "Send Mail" action are added through the setting on Tools > Options > General > Mail and adding the recipients separated by commas.​

Managing Email Notification Addresses:

According to the official documentation:​

"From the Tools menu, select Options > General > Mail and DNS. Update any of the following fields: Send Email Alerts/Notifications - List email addresses to receive CounterACT email alerts."

Email Address Separator Options:

According to the documentation:​

"Separate multiple addresses using any of the following characters: semicolon (;), blank space or comma (,)."

So while commas are the primary method shown in the documentation, the system also accepts semicolons and spaces as separators. However, the answer that most specifically matches the Forescout documentation interface is Option A.

How to Configure Email Recipients:

According to the administration guide:​

Open Tools Menu - Select "Tools" from the menu bar

Select Options - Click on "Options"

Navigate to Mail Settings - Select "General > Mail and DNS"

Add Recipients - Enter email addresses in the "Send Email Alerts/Notifications" field

Separate Multiple Addresses - Use commas, semicolons, or spaces between addresses

Example Recipient Configuration:

According to the documentation:​

text

Example 1: user1@example.com,user2@example.com,user3@example.com

Example 2: user1@example.com; user2@example.com; user3@example.com

Policy-Level vs. Global Email Configuration:

According to the documentation:​

Global Email Configuration (Tools > Options > General > Mail) - Sets default recipients for all email alerts

Send Email Action (in policy) - Can be configured to send to administrator email or specify alternative recipients

The global configuration in Tools > Options is where the primary recipient list is maintained.

Why Other Options Are Incorrect:

B. Thru the policy "Send Mail" action, under the Parameters tab - This is not where email recipients are configured; the policy action uses the global settings

C. Thru Tools > Options > Advanced - Mail - The correct path is Tools > Options > General > Mail, not Advanced

D. Thru the Tools > Options > NAC Email - There is no "NAC Email" option in Tools > Options

E. Thru the policy sub rule and adding a condition - Sub-rules contain conditions, not email recipient configuration

Send Email Action in Policies:

According to the documentation:​

"The Send Email action automatically delivers email to administrators when a policy is matched."

This action uses the email addresses configured in the global mail settings.

Referenced Documentation:

Managing Email Notifications documentation​

Initial Setup – Mail section​

Managing Email Notification Addresses documentation​

Core Extensions Module Reports Plugin Configuration Guide​