Today, with the continuous deepening of digital office in enterprises, enterprise email, as the core carrier of business communication, confidential transmission, and data retention, directly affects the security and compliance of enterprise information assets in terms of its security protection capabilities. Relying on NetEase's 20 years of mailbox technology precipitation and security research and development strength, NetEase Enterprise Mailbox has built a high-level security protection system covering the whole link of "account transmission storage content management", integrated core technologies such as self-developed intelligent risk control, multiple authoritative certification, and refined security control, and formed a closed-loop security mechanism of "defense in advance, interception in the event, tracing after the event, and full process compliance". As the first mail service provider to obtain EAL3+certification in China, NetEase Enterprise Mailbox provides bank level security guarantee for more than a million enterprises, adapting to the high security demand scenarios of finance, government affairs, medical care, the Internet and other industries.

As the first line of defense for account security, NetEase Enterprise Email adopts a multi-dimensional risk control and refined permission control model to eliminate the risks of account theft and illegal access from the source. The system has three core capabilities: anti-collision library, brute force cracking interception, and weak encryption intelligent scanning. It can identify high-frequency password attempts, abnormal IP login, unfamiliar device login and other risky behaviors in real time, immediately intercept suspicious operations, trigger remote login reminders, account lock reminders, and inform administrators and account owners synchronously through SMS or email; Simultaneously supporting custom password policies, administrators can flexibly set password length, character combinations, modification period, and validity period, forcing employees to set high-strength passwords, and compressing security vulnerabilities from the source of the account. In addition, the system provides multiple verification guarantees, including Webmail secondary login verification (mobile dynamic verification code, general order), client authorization code, security lock and other functions. Employees need to complete double verification when logging into their email or operating important folders. Administrators can set IP login whitelists and login channel restrictions (Webmail, client) to achieve fine-grained control of account access; For departing employees, support one click handover of emails and contact lists, freeze accounts and migrate core data to ensure that enterprise information is not leaked, and form a closed loop of account lifecycle security management.

In terms of email content and transmission protection, NetEase Enterprise Email has created a four fold protection system of "anti counterfeiting, anti garbage, anti-virus, and anti leakage" to accurately resist various network threats. Its anti garbage and anti-virus capabilities are at the forefront of the industry. As the official partner of DMARC in China, NetEase Enterprise Email has taken the lead in introducing the DMARC anti spam protocol. Combined with SPF and DKIM protocols, the three work together to intercept over 99% of counterfeit emails, preventing risks such as phishing scams and impersonating companies to send emails from the source. NetEase Enterprise Email adds a dedicated "electronic anti-counterfeiting seal" to each email to ensure that the email source is traceable and tamper proof. Our self-developed intelligent anti spam system relies on NetEase's massive email sample database and uses deep learning and semantic analysis technology to achieve a spam interception rate of up to 99.9% and a misjudgment rate of less than 0.001%. It can accurately identify variant spam emails and marketing harassment emails; Paired with a third-party authoritative antivirus engine, the virus email recognition and interception rate exceeds 99.99%. The virus database is updated in real-time, and malicious attachments and phishing links can be quickly identified. Suspicious content can be immediately intercepted and alerts can be pushed. At the same time, SSL encryption is enabled throughout the email transmission process, and the disk data is stored using discrete distributed encryption. The internal and external network isolation design prevents data transmission and storage from being stolen or tampered with, ensuring the security of core data.

In terms of compliance and data retention, NetEase Enterprise Email has passed multiple international and domestic authoritative certifications such as EAL3+certification, National Information Security Level Protection Level 3 certification, ISO/IEC27001 certification, CSA STAR certification, etc. Its information security management level has reached the top international standards and fully complies with compliance requirements such as the Cybersecurity Law and the Personal Information Protection Law. The email data adopts a disaster recovery level redundancy configuration of millions of yuan, relying on national backbone network data centers to achieve distributed multi copy storage. Mistakenly deleted emails can be fully recovered within 30 days, with zero data loss; The cloud email archiving function can automatically retain all incoming and outgoing emails, supporting quick retrieval by keywords, senders, and time ranges, meeting the needs of enterprise auditing and traceability; At the same time, it supports email review function. Administrators can set review rules, and emails that hit the rules must be approved before they can be sent. The entire operation and maintenance process is traceable, and all violations can be traced, providing solid technical support for enterprise compliance management.