What is one feature of Mimecast's email security?

One feature of Mimecast's email security is its machine learning-based threat detection. This technology utilizes advanced algorithms to analyze patterns in email traffic and identify potential threats, such as phishing attempts and malware. By applying machine learning, Mimecast continuously improves its defenses against evolving cyber threats, allowing organizations to protect sensitive information and maintain a secure email environment. This proactive approach enables quicker response times to new types of attacks and enhances overall email security effectiveness, making it a critical component of Mimecast's offerings.

The other options do not accurately reflect the primary features of email security provided by Mimecast. Priority inbox sorting is more related to email organization rather than security. Enhanced graphics for email composition pertain to user experience rather than threat detection. Automatic email forwarding to personal accounts does not address security concerns and can actually pose a risk by potentially exposing sensitive information outside the company’s secure environment.