What is the purpose of email filtering in a Cloud Gateway?

The purpose of email filtering in a Cloud Gateway is to categorize incoming emails and block harmful ones. This functionality is crucial for maintaining the security and integrity of an organization's email communications. Email filtering helps safeguard users from phishing attacks, spam, malware, and other malicious content that could compromise sensitive information or disrupt operations.

By implementing robust email filtering mechanisms, organizations can ensure that only legitimate and safe emails reach users' inboxes. This process involves analyzing various attributes of incoming emails, such as the sender's information, the content of the message, and any embedded links or attachments. Suspicious or harmful emails can be quarantined or blocked entirely, thereby minimizing the risk of security breaches.

The other choices focus on aspects that, while relevant to email management, do not represent the primary purpose of email filtering. Prioritizing emails based on sender reputation might improve email management but does not directly address security. Sorting emails by size and attachment type can help manage storage but does not inherently provide security. Deleting outdated emails can help declutter inboxes but is not a primary function of email filtering in the context of security threats.