Coremail

What Coremail does

Coremail is a Chinese enterprise email infrastructure and security provider founded in 1999, headquartered in Guangzhou and operating as a privately held company under Guangdong Ying Shi Computer Technology Co., Ltd. The company builds and operates self-hosted and cloud-hosted mail systems (XT6 and Enterprise Email), a security product line under the CACTER brand (mail security gateway, EDLP data-loss prevention, SMC2 management center, anti-phishing CAC 2.0, and managed security services), and the newly launched AI-Native Secure Email System with a multi-agent 'Perceive-Think-Act' architecture. Underlying technology includes the proprietary NERVE2.0 deep-learning platform (achieving 99.8% spam detection at below 0.02% false positives), LLM-powered semantic analysis using both in-house models and integrations with third-party models such as Tsinghua Zhipu ChatGLM, and ReAct-based autonomous agent execution inside dual-layer sandboxes.

The business model is hybrid: perpetual licenses plus annual maintenance for the XT6 self-built deployment, tiered SaaS subscriptions for cloud enterprise email (Professional, Exclusive, Dedicated), hybrid (software/hardware/cloud) sales of the CACTER security gateway, and professional services for anti-phishing drills and event-period protection. Go-to-market is sales-led, with 14 regional offices across China plus wholly-owned subsidiaries in Hong Kong and Thailand, supplemented by the Huawei Cloud marketplace channel, regional resellers, and event-driven demand generation (Digital China Summit, GITEX Asia, regional sand-table exercises). Customer segments concentrate in government, finance, education, and large state-owned enterprises — with named logos including ICBC, Agricultural Bank of China, China Merchants Bank, CITIC Securities, Shougang Group, Shaanxi Provincial Government, Zhejiang University, and the Cote d'Ivoire government.

Coremail serves over 21,000 enterprise customers and 10 billion mail terminal users in China, holds 32.5% of the China self-built mail system market, 68% share among the top 50 Chinese banks and 73% among the top 30 securities firms (both 2022), and covers 80% of China's double-first class universities. Revenue is not publicly disclosed, and no external funding rounds were identified in the available data, indicating the company is founder/management-owned and funded organically through operations.

Name

Coremail

Legal name

广东盈世计算机科技有限公司

Website

https://coremail.cn

Company type

Private

Founded year

1999

Operating status

Operating

Headcount range

251–500 employees

Short description

Coremail is a Chinese enterprise email infrastructure and security provider founded in 1999, serving over 21,000 enterprise customers and 10 billion mail terminal users across government, financial, education, and large enterprise verticals with self-hosted and cloud mail systems, CACTER security products, and a newly launched AI-Native multi-agent email platform.

Ownership category

akta.pro rank

Product category

Enterprise Email Software

NAICS

Computer Systems Design and Related Services (54151), Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (5182)

SIC

Services-Prepackaged Software (7372), Services-Computer Programming, Data Processing, Etc. (7370)

akta.pro primary industry

Email & Collaboration Threat Detection/Response (ICR/CTDR) (HDADAKAI)

akta.pro secondary industries

Email Data Loss Prevention & Encryption (HDADAKAD), AI Application Enablement Platforms (Copilot/Agent Frameworks, SDKs) (HDAEANAJ)

Keywords

• Enterprise email systems
• Email security gateways
• Mail archiving software
• Phishing protection services
• Mail data loss prevention

Headquarters

HQ city

Haidian

HQ country

China

HQ region

Asia

Offices15 records

Markets served

GTM type

B2B

Offering type

Software

Cost components

Personnel, Technology or R&D, Marketing or Sales, Infrastructure, Operations

Revenue model

1. Self-built Email System Software License: One-time perpetual license sale for Coremail XT6 self-built email system with annual maintenance and support fees
2. Enterprise Email Cloud Service: Subscription-based cloud-hosted enterprise email service (SaaS model) with tiered plans for professional, exclusive, and dedicated versions
3. CACTER Email Security Gateway: Security gateway products available in software, hardware, and cloud service deployment models
4. Email Archive and Delivery Systems: Additional products including email archive system, email delivery system, EDLP data loss prevention, security overseas relay
5. Email Security Services: Anti-phishing drills, security expert services, and priority protection services during important events

Pricing tiers

Go-to-market motion3 records

Distribution channels5 records

Marketing channels7 records

Core offering

Coremail develops and sells self-built enterprise email server software (XT6) and hosted enterprise email (cloud) products, complemented by the CACTER line of email security products including an AI-native security gateway, anti-phishing account protection, mail data loss prevention (EDLP), mail archiving and delivery systems, and a security management center. The AI-Native Secure Email System adds an agent-driven, multi-agent architecture for autonomous email processing and workflow automation.

Product overview

Coremail is a comprehensive email product and solution provider with a multi-product portfolio centered around its mail system. The core offerings include the XT6 mail system (self-built email infrastructure) and Enterprise Email (cloud-based hosted service), supplemented by the CACTER security product line covering mail security gateway, data loss prevention, security management center, anti-phishing protection, and security services. The AI-native secure email system represents the latest AI-driven innovation using multi-agent architecture with autonomous execution capabilities. Products support full Xinchuang (信创) adaptation and integrate with major third-party platforms including Microsoft Exchange, O365, LDAP/AD, and various OA systems.

Differentiator

Problem solved

Functional benefit

Products and services

• Coremail AI-Native Secure Email System (AI原生安全邮件系统) Agent-driven intelligent mail processing system using AI dynamic profiling, ReAct autonomous execution engine, and sandbox security mechanism. Transforms the traditional mailbox into an autonomous-execution digital employee covering email classification, scheduling, approval workflows, office work, analysis, and management operations. Targeted at enterprise customers.
• XT6 Mail System (XT6邮件系统) Fully self-developed secure email server system with standard multi-active architecture, containerized deployment, and multi-dimensional defense. Full Xinchuang (domestic IT) adaptation covering domestic CPUs, operating systems, databases, and middleware; supports replacement of IBM Domino and Microsoft Exchange. Sold as perpetual license with annual maintenance.
• Enterprise Email (企业邮箱) Cloud-hosted enterprise email service built on Coremail's self-built mail system foundation with zero hardware investment, carrier-grade machine room management, global email delivery, and 7x24 original manufacturer service. Subscription-based with Professional, Exclusive, and Dedicated versions.
• Xinchuang Cloud Enterprise Email (信创云企业邮箱) Xinchuang-compliant cloud enterprise email fully adapted to mainstream domestic CPUs, operating systems, databases, and middleware in the Xinchuang catalog. Supports replacement of IBM Domino and Microsoft Exchange foreign mail systems for Xinchuang customers.
• CACTER Mail Security Gateway (CACTER邮件安全网关) Enterprise email security gateway based on proprietary neural network platform NERVE2.0 with deep learning. Uses automatic filtering plus manual control dual-layer mechanism to detect and block spam, phishing, virus emails, and BEC fraud. Achieves 99.8% anti-spam accuracy. Supports Coremail, Exchange, O365, Gmail, IBM Domino, Lotus Notes, and Feishu Enterprise Email.
• Mail Archiving System (邮件归档系统) Real-time mail archiving technology with a massive mail data search engine to meet compliance and audit requirements, with three-power separation guarantee and audit-oriented business process.
• Mail Delivery System (邮件投递系统) Advanced mail delivery system engine with a web remote interface for comprehensive delivery control, personalized group messaging, user feedback analysis, and product customization development.
• Mail Data Loss Prevention System EDLP (邮件数据防泄露系统EDLP) Enterprise email data leakage protection system providing sensitive content detection, intelligent hierarchical classification control, full-link event traceability, and auditing. Combines rule-based detection with an AI interaction framework integrable with enterprise's own large models.
• Security Management Center SMC2 (安全管理中心SMC2) Internal security product with automatic disposal functions including account locking, mail recall, alerts, and auditing. Provides log auditing, proactive security threat disclosure and disposal, situation analysis, and user threat behavior analysis.
• CAC2.0 Anti-Phishing Account Protection (CAC2.0反钓鱼防盗号) Cloud security service with comprehensive prevention of mail threats and account threats, providing pre-event interception, mid-event alerts, and post-event disposal. Includes spam/phishing detection, abnormal account monitoring, compromised account login interception, and mail threat intelligence.
• Mail Security Services (邮件安全服务) Comprehensive mail security services including anti-phishing combat training with high-simulation real combat exercises, security heavy protection services for major events, and security expert services with emergency response and training.
• Mail Client (邮箱客户端) Cross-platform mail client supporting Windows, Mac, iOS, Android, and Linux distributions including UOS and Kylin. Features data migration, shared mailbox, mail folder management, and comprehensive security protection with two-factor authentication.
• HCMail HarmonyOS Native Mail Client Next-generation native intelligent mail client for the HarmonyOS ecosystem, built with native HarmonyOS capabilities. Features native experience, efficient composition, intelligent search, and mail collaboration. The first commercial ToB mail client released on OpenHarmony App Gallery.
• Global First Uyghur Language Mail System World's first Uyghur-language email system developed in partnership with the Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences. Adapted for right-to-left Uyghur writing rules and multilingual text layout to support Belt and Road digital connectivity and the Digital Silk Road.

Quantifiable outcome

• 99.8% spam detection accuracy with below 0.02% false positive rate
• +5 more outcomes

Named customers10 records

Segments6 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration13 records

AI capability9 records

Feature9 records

Partnerships

Eleven partnerships are on record, tiered core and minor.

• Huawei CloudcoreStrategic or Co-development Partner · 5 June 2026Coremail and Huawei Cloud co-created Yun Xiang Ban enterprise email product, combining Coremail's 27 years of email technology with Huawei Cloud's infrastructure capabilities for distributed architecture and cloud-native deployment.
• Huawei HarmonyOS/OpenHarmonycoreStrategic or Co-development Partner · 1 January 2022Coremail is among the earliest HarmonyOS ecosystem partners. Developed HCMail native mail client for HarmonyOS, open sourced mail protocol SDK to OpenHarmony-TPC, first B2B commercial mail app on HarmonyOS App Gallery.
• China UnionPay (银联云)coreStrategic or Co-development Partner · 28 October 2021Coremail received 'Ecosystem Partner' certificate from China UnionPay, collaborating on digital financial ecosystem building through email services for financial institutions.
• Kirin Software (麒麟软件)coreTechnology or IntegrationEcosystem partnership with Kirin for Xinchuang adaptation. Coremail XT6 mail system adapted for Kirin V10 operating system, won 'Innovation Application Solution' award together.
• Yundao Information (云道信息)minorChannel Partner/ Reseller/ DistributorCo-hosted 2026 Email Innovation Application and Security Practice Salon in Shanghai with focus on AI email innovation and Xinchuang environment operations.
• China Academy of Sciences Xinjiang Technical Institute of Physics and Chemistry (中科院新疆理化所)minorStrategic or Co-development PartnerJointly released world's first Uyghur-language email system supporting Belt and Road digital connectivity and Digital Silk Road initiatives.
• Lenovo PCCW SolutionsminorGTM or Marketing PartnerParticipated in Lenovo PCCW Solutions 'Next-Gen IT Ecosystem' with 18 technology partners for digital transformation in Hong Kong and Asia Pacific.
• Qianxin Group (奇安信)coreTechnology or IntegrationCo-published '2021 China Enterprise Email Security Research Report'; integrated Qianxin antivirus engine into CACTER email security gateway for enhanced virus detection.
• Tsinghua University Network Research InstituteminorStrategic or Co-development PartnerCo-organized DataCon2021 Big Data Security Analysis Competition, China's first large-scale competition focused on big data security analysis.
• China Internet Network Information Center (CNNIC)coreStrategic or Co-development PartnerSupported IETF 125th Conference in Shenzhen; first commercial email company to support IETF multilingual email technical standards.
• OpenHarmony-TPCcoreTechnology or IntegrationOpenHarmony Technical and Planning Committee where Coremail open sourced mail protocol SDK; participated in HarmonyOS ecosystem development.

Scale indicators15 records

Recent moves10 records

Expansion highlights6 records

Direct peers

• 263 Network Communications (二六三企业通信): One of Coremail's closest direct competitors in China's enterprise email hosting market, offering cloud-based enterprise mail with similar SMB and enterprise focus. Directly competes for the same Xinchuang-mandated replacement opportunities.
• NetEase Enterprise Mail (网易企业邮): Major Chinese cloud enterprise email provider backed by NetEase's brand and infrastructure, competing head-to-head with Coremail's cloud email offering for SMB and mid-market accounts in China.
• Tencent Enterprise Mail (腾讯企业邮): Tencent's enterprise email product deeply integrated with WeCom, competing in the same Chinese enterprise email market and leveraging consumer brand reach that Coremail does not have.
• Mimecast: Global email security SaaS provider offering threat detection, DLP, archiving, and continuity comparable to Coremail's CACTER gateway and email security product line. Closest international peer for the security product category.
• Proofpoint: Enterprise email security leader offering advanced threat protection, DLP, and compliance archiving that overlap directly with CACTER gateway, EDLP, and archiving system offerings.
• Barracuda Networks: Email security gateway and archiving vendor providing comparable threat detection and data protection products to Coremail's CACTER and email security portfolio for SMB and mid-market.

Broad incumbents

• Sangfor Technologies (深信服): Major Chinese cybersecurity and cloud vendor offering broader IT security solutions including some email security capabilities. Larger scale and broader portfolio make it both an adjacent competitor and a potential ecosystem partner.
• Qi An Xin (奇安信): Largest Chinese cybersecurity vendor and Coremail's technology partner (integrated into CACTER gateway). Competes in adjacent security categories and represents both a threat and channel relationship.
• Microsoft Exchange Online / Microsoft 365: Global enterprise email market leader that Coremail's XT6 and cloud offerings directly displace under China's Xinchuang policy. Sets the product benchmark and feature parity target domestically and abroad.
• Alibaba Cloud Mail (阿里云邮): Alibaba's enterprise email offering bundled with its cloud platform, competing for the same Chinese enterprise customers Coremail serves while leveraging Alibaba's hyperscale cloud infrastructure advantage.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat8 records

Key risks5 records

Key highlights7 records

Customer concentration

• Xx.com/Coremail1

Compliance10 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles14 records

Subsidiaries2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Coremail