CEO Blog

A virtual club to communicate with peers and users in the cryptographic industry
Meet friends on blog, it is my mission to popularize cryptographic knowledge, cryptographic application and zero trust ideas.

Hybrid Trust: ZTmail’s Innovative Trust Model

Discover ZTmail’s Hybrid Trust model, combining Global Trust and ZTmail Trust to deliver global signature interoperability, trusted identity display, and lower certificate costs. Learn how dual digital signatures provide a potential path toward post-quantum cryptography migration.

October 22, 2026Read more

Cryptographic Application Automation: From Certificates to Real-World Applications

Discover how ZTmail connects automated certificate lifecycle management with certificate-based cryptographic operations through a shared cloud cryptographic infrastructure. Explore how ZTmail App and ZTmail Gateway bring automated signing, signature verification, encryption, and decryption to Email, Chat, and Document.

October 19, 2026Read more

ZTmail Built Chat into S/MIME Client

ZTmail Chat combines S/MIME encryption, trusted identity, and global email infrastructure to create a globally interconnected encrypted chat experience without requiring a separate messaging network.

September 29, 2026Read more

ZTmail Exploration Part 10: Global Ecosystem

Explore how cryptographic application automation connects Email, Chat, and Document through trusted identity, digital signatures, encryption, certificate automation, open standards, and interoperability to build a global cryptographic application ecosystem.

September 28, 2026Read more

ZTmail Exploration Part 9: Document Signing

Explore how ZTmail Sign integrates digital document signing, trusted identity, document encryption, signature validation, and trusted timestamping into the email workflow. Sign documents from email attachments or local files using ZTmail App, with certificate-based cryptographic evidence that can be validated beyond the original workflow. Discover how Cryptographic Application Automation makes document signing and encryption protection part of everyday work.

September 24, 2026Read more

ZTmail Exploration Part 8: Global Instant Messaging

Global S/MIME Email infrastructure can become a global instant messaging network, combining end-to-end encryption, trusted identity, and interconnectable communication without a centralized chat platform. ZTmail has already been implemented in practice and can serve as a reference for the global instant messaging industry.

September 23, 2026Read more

ZTmail Exploration Part 7: ACME for S/MIME

Learn how RFC 8823 brings ACME certificates into S/MIME automation, and how ZTmail automates S/MIME certificate requests, email validation, certificate issuance, configuration, and renewal, while also supporting automatic dual-algorithm RSA/SM2 S/MIME certificates.

September 22, 2026Read more

ZTmail Exploration Part 6: User Control by Design

Automation can remove complexity while still letting users make their own decisions. ZTmail gives users direct control over certificates, identity levels, algorithms, trust anchors, cryptographic keys, AI providers, API keys, and AI access to email data.

September 21, 2026Read more

ZTmail Exploration Part 5: Privacy by Design

ZTmail adopts a privacy-first email architecture that combines automatic S/MIME encryption, user-controlled private keys, decentralized public-key handling, mailbox-based encrypted backups, user-controlled synchronization, and specialized identity verification. These measures reduce unnecessary data collection and exposure while preserving the convenience of automated email encryption.

September 20, 2026Read more

ZTmail Exploration Part 4: Key Management

The standard for measuring whether an email encryption solution is truly usable isn't just that it can automatically encrypt today, but also that it can still open emails encrypted yesterday when the environment changes tomorrow. ZTmail makes email encryption sustainable while keeping users in full control of their keys.

September 18, 2026Read more

ZTmail Exploration Part 3: Identity Made Visible

The next generation of email security will combine cryptography, automation, and user experience so that trust is no longer assumed, but verified throughout the communication lifecycle. This is the direction ZTmail is committed to advancing: making trusted identity visible and actionable.

September 17, 2026Read more

ZTmail Exploration Part 2: AI, Your Key

As generative AI transforms email, organizations need more than intelligent assistance. Explore how user-owned AI API keys, S/MIME, digital signatures, cryptographic identity, and automation can work together to create a more secure and trustworthy email architecture.

September 16, 2026Read more

ZTmail Exploration Part 1: Encryption for Everybody

S/MIME provides both email encryption and digital signatures, but manual certificate management has limited widespread adoption. This article explores how automation can make encryption practical, while digitally verified identity can provide an immediate signal for users and enterprise email-security policies.

September 14, 2026Read more

Making S/MIME Practical

Why has S/MIME stayed mainly in professional deployments for so long, making it hard for individuals and small businesses to use? ZTmail App connects email certificate lifecycle management, digital signatures, email encryption, trusted identities, and key management directly to one email client, turning S/MIME from a tech feature into a tool everyone can use in everyday communication.

September 11, 2026Read more

Making S/MIME Scalable for Enterprise

Why enterprise email encryption has struggled to scale, and how S/MIME automation, organizational trust infrastructure, Hardware Gateway deployment, and trusted identity can make message-level encryption an enterprise capability.

September 11, 2026Read more

S/MIME Encryption for Everybody, Automated. AI, Your Key

S/MIME technology and standards are mature; complexity is the real barrier to adoption. ZTmail automates the connection between CAs, email clients, and security systems, making encryption a default capability while using AI to amplify trusted communication.

September 11, 2026Read more

From SSL Red Ocean to S/MIME Blue Ocean

Free certificates now dominate over 90% of the SSL market. The S/MIME email certificate space remains a blue ocean with far greater potential. ZTmail and the AutoCert Marketplace invite CAs worldwide to join this emerging ecosystem. Early participants will secure advantageous positions.

August 20, 2026Read more

To ZoTrus at 5: ZTmail Is Coming

ZoTrus Technology turns five. ZTmail's release is delayed, but only to make it better. From HTTPS to Email, five years of building toward one goal: making cryptography simple and automation real. ZTmail, S/MIME encryption for everybody, automated. AI, your key.

August 20, 2026Read more

Why is email encryption harder to popularize than HTTPS?

HTTPS succeeded through automation and browser warnings, but email encryption stalled for decades due to certificate configuration, public key exchange, and key management. ZTmail breaks the deadlock with automated certificate management and visible identity display, making email encryption as default as HTTPS.

August 14, 2026Read more

Webmail vs. Email Client: Which Is More Secure?

Traditional email clients make encryption complex. Webmail offers convenience but no privacy. ZTmail solves this dilemma with automated certificates and bring-your-own AI, making every email encrypted by default, secure and smart.

August 13, 2026Read more

What Kind of Email Client Do We Really Need?

Email clients haven't evolved in 31 years. Emails are stored in plain text; encryption remains complex and difficult. ZTmail changes this, automated encryption, digital signatures, identity display, AI-powered. Email security made simple. Public beta launches August 20.

August 12, 2026Read more

Understanding S/MIME Email Encryption (Part II)

This article explains the difficulties encountered in the implementation of S/MIME technology. ZoTrus Technology draws on the ideas of HTTPS automation technology and completely solves the problem of popularizing S/MIME email encryption by realizing email certificate automation, public key exchange automation and key management automation.

February 24, 2025Read more

Understanding S/MIME Email Encryption (Part I)

This article explains S/MIME technology, which is currently the only standard email encryption technology in the world and the only technology that has been widely supported by industry. ZoTrus Email Encryption Automation Service uses S/MIME technology to achieve true end-to-end encryption.

February 17, 2025Read more

The day email encryption becomes commonplace is the day fraud emails die

Fraud emails have caused a global loss of $55.5 billion over the past decade. This article proposes a complete solution to eradicate email fraud - popularizing email encryption application. This article also shows how ZTmail UI specifically displays email identity information, which effectively prevents email fraud.

November 14, 2024Read more

How does ZTmail automate key management?

The third challenge of S/MIME email encryption is key management, this article discloses how ZTmail automates key management, and only by automatically managing keys can email encryption be truly automated.

November 07, 2024Read more

How does ZT Browser realize the automatic email certificate management?

This article explains how ZoTrus Technology realizes automatic email certificate management, only by automatically configuring email certificates can automatic-email-encryption be realized, and only by popularizing email encryption can we ensure the security of email content in transit and in the cloud.

October 30, 2024Read more

Cloud and Privacy Can Be Both

This article reveals in advance how the ZT Browser Email Encryption Service uses email encryption technology to protect the confidential information of users' address books, cleverly solving the contradiction between cloud services and privacy protection, allowing both to be achieved.

October 28, 2024Read more

Email encryption still has a long way to go with a heavy load

This article summarizes the advantages and disadvantages of various email encryption solutions and reviews the author's 20 years of email encryption research. The author hope that readers will have a clear understanding of email encryption technology and choose the right email encryption solution.

October 22, 2024Read more

Email is bound to become a core application of Web 3.0

This article summarizes the development history of the Web and draws an important conclusion: Email will become a core application of Web 3.0, and to achieve this goal, email encryption automation is the key.

October 16, 2024Read more

Only by Automating End-to-End Encryption Can Truly ensure Email Security

This article explains what true end-to-end encryption is and what kind of end-to-end encryption users should choose to truly protect the security of their email confidential information. This article also briefly introduces the upcoming ZoTrus email encryption automation solution.

October 11, 2024Read more

Email Needs Zero Trust

4 billion emails are sent worldwide every month, 90% of cyberattacks start with phishing emails, 97% of people cannot accurately identify phishing email scams, and Gmail blocks more than 100 million phishing emails every day. What do these data means?

October 09, 2024Read more

HTTPS encryption automation and email encryption automation

This article summarizes the work done by ZoTrus Technology in HTTPS encryption automation. The next hot spot for cryptographic applications will be email encryption automation. This article also clarifies the relationship between HTTPS encryption automation and email encryption automation and the different missions they accomplish.

September 29, 2024Read more

CEO Blog

A virtual club to communicate with peers and users in the cryptographic industryMeet friends on blog, it is my mission to popularize cryptographic knowledge, cryptographic application and zero trust ideas.

Hybrid Trust: ZTmail’s Innovative Trust Model

Cryptographic Application Automation: From Certificates to Real-World Applications

ZTmail Built Chat into S/MIME Client

ZTmail Exploration Part 10: Global Ecosystem

ZTmail Exploration Part 9: Document Signing

ZTmail Exploration Part 8: Global Instant Messaging

ZTmail Exploration Part 7: ACME for S/MIME

ZTmail Exploration Part 6: User Control by Design

ZTmail Exploration Part 5: Privacy by Design

ZTmail Exploration Part 4: Key Management

ZTmail Exploration Part 3: Identity Made Visible

ZTmail Exploration Part 2: AI, Your Key

ZTmail Exploration Part 1: Encryption for Everybody

Making S/MIME Practical

Making S/MIME Scalable for Enterprise

S/MIME Encryption for Everybody, Automated. AI, Your Key

From SSL Red Ocean to S/MIME Blue Ocean

To ZoTrus at 5: ZTmail Is Coming

Why is email encryption harder to popularize than HTTPS?

Webmail vs. Email Client: Which Is More Secure?

What Kind of Email Client Do We Really Need?

Understanding S/MIME Email Encryption (Part II)

Understanding S/MIME Email Encryption (Part I)

The day email encryption becomes commonplace is the day fraud emails die

How does ZTmail automate key management?

How does ZT Browser realize the automatic email certificate management?

Cloud and Privacy Can Be Both

Email encryption still has a long way to go with a heavy load

Email is bound to become a core application of Web 3.0

Only by Automating End-to-End Encryption Can Truly ensure Email Security

Email Needs Zero Trust

HTTPS encryption automation and email encryption automation

A virtual club to communicate with peers and users in the cryptographic industry
Meet friends on blog, it is my mission to popularize cryptographic knowledge, cryptographic application and zero trust ideas.