How are Mimecast policies categorized based on their operational focus?

Mimecast policies are categorized based on their type of email management because this organization helps in defining how emails are handled within the system. Each type of email management policy focuses on specific functions, such as security, archiving, continuity, and compliance. This categorization allows for a structured approach in managing different aspects of email communications effectively.

For instance, policies can be aimed at ensuring that emails are secured from threats, archiving emails for legal compliance, providing continuity in email service during outages, or managing data loss prevention. This operational focus allows administrators to implement targeted strategies to maintain user integrity and organizational safety in email communications, contributing to a more robust email management framework.

In contrast, the other options do not encapsulate the primary operational focus of the policies in the same comprehensive way. While the effectiveness in filtering spam, audience targeting, and access levels might be important, they do not directly relate to the overarching management types that Mimecast focuses on in its policies.