Abnormal has an email protection service that uses AI to spot human behavior patterns to thwart attacks like credential phishing and business email compromise. It's designed to work well with cloud services like Google Workspace and Microsoft 365, so it's a good option for organizations that want a single email security service without overburdening their security team.
Proofpoint is another strong option, with a multi-pronged threat detection and data loss prevention approach that combines behavioral AI with more human-focused security tools. It's designed to thwart email attacks and data breaches, and it's widely used in government, education and health care.
Egress offers an Intelligent Email Security service that includes more-advanced phishing threat protection and secure file sharing. With AI-based behavioral detection and zero-trust models, Egress can help prevent data exfiltration and offers end-to-end email encryption, too. It's a good option for organizations that want to improve email security without a lot of disruption.