The round was led by Index Ventures with participation from previous investors Decibel Partners and Slow Ventures. Cybersecurity visionary and Crowdstrike Co-founder & former CTO Dmitri Alperovitch is also joining the investment round and Board of Directors. The added funding will be used to further invest in the platform and improve the customer experience. In a rapidly evolving threat landscape, email remains a top security concern for businesses. Sublime gives security teams the ability to detect and prevent these attacks with out-of-the-box protection and unprecedented visibility into their cloud email environments, with additional controls for customized detections, attack surface reduction, threat hunting, and more.

Sublime is the AI-powered, programmable cloud email security platform that detects and blocks attacks like Business Email Compromise (BEC), malware/ransomware, credential phishing, and more. The open platform enables security teams to have better visibility and control over their email environment, customize and tailor the platform to suit their unique needs, and collaborate with their peers against novel attacks to reduce risk and prevent email-borne incidents.