You need IAG, NGAF and Endpoint Secure

It is under Sangfor Endpoint Secure

Email security is one solutions that NGAF and Enpoint Security doesn't fullfill. Unfortunately as of now Sangfor has no Email Security. But whow knows maybe it is on their roadmap.

Sangfor Endpoint Secure solutions protect organizations against various cybercrimes both internally and externally.

And Endpoint Secure is an endpoint security solution that can be integrated with Sangfor’s NGAF, IAM, and Cyber Command, to provide a full security system with complete coverage against malware for Ransomware Protection, and APT threats.

Pls find below linking for detail:
https://www.sangfor.com/blog/cybersecurity/what-is-bec-business-email-compromise-attack

Sangfor Endpoint Secure utilizes a different approach to defending systems from malware and APT threats compared to current next-generation Anti-virus (NGAV) or endpoint detection & response (EDR) solutions.

Endpoint Secure provides a holistic response to malware infections and APT breaches across the entire organization's network, with ease of management, operation, and maintenance. The solution is scalable to meet the needs of any organization needing on-premise management, cloud management, or a hybrid solution when it comes to endpoint security, protection, detection, and response.

Best solution is Sangfor IAG and Sangfor Endpoint Secure