Sophos Email is a cloud-based solution that provides secure email networks and protection against intrusion, unauthorized access, malware, and other threats. It allows businesses to define custom policies for multiple groups, domains, and users to block or quarantine suspicious emails. The software includes anti-ransomware technology that utilizes behavioural analytics to stop ransomware and boot-record attacks. It also offers secure email inboxes, compliance management, IP reputation filtering, compromised mailbox detection, and blocklists.