ZTmail Chat
The Internet Is Global. Chat Is Not.Today's Internet connects the world. Chat still divides it into closed networks.
People can easily communicate with others who use the same chat service. But when contacts use different platforms, countries, organizations, or business ecosystems, communication becomes fragmented.
People often need multiple chat apps and accounts just to stay connected with family and friends, international contacts, colleagues, customers, suppliers, and business partners.
The Internet is global. But one of the most important forms of everyday digital communication is still divided into private, disconnected networks.
ZTmail, Based on Global Email, Now in Chat Mode.
Turn encrypted email into an end-to-end encrypted chat experience.
ZTmail App lets you switch from Mail to Chat while keeping the same S/MIME encryption, trusted identity, and global email infrastructure underneath. Your conversation remains an encrypted email, protected by your S/MIME keys and stored in your own mailbox, without requiring a separate centralized chat service.
One Infrastructure. Two Experiences. Mail and Chat can be different experiences over the same secure communication infrastructure.
The interface changes. The underlying email infrastructure, S/MIME protection, and trusted identity remain. Mail for email. Chat for conversation. One secure infrastructure underneath.
Chat When You Want. Email When You Need. One conversation. Two ways to communicate.
With ZTmail, Chat and Email are not separate apps or separate communication systems. There are two ways to work with the same encrypted conversation. While chatting, you can switch to the full email experience at any time.
Reply by Email
Turn your chat reply into a regular email response.
Forward by Email
Forward the conversation to someone who is not part of the chat.
Open in Composer
Open the full email composer whenever you need more space, formatting, attachments, or a more formal message. No copy and paste. No switching between Apps. Move between Chat and Mail whenever you need.
Your Chat Partner Doesn't Need ZTmail App. They can keep using an existing S/MIME email client.
- No New App
- No New Chat Account
- No New Chat Platform
- You use ZTmail
- They use email
- You can still chat
They can reply from their existing email client, even when you're using Chat Mode in ZTmail. When the reply arrives, ZTmail automatically brings it into the chat conversation. IMAP IDLE enables near-real-time message arrival notifications for a more responsive chat experience.
Visible Trusted Identity DifferencesSee the difference directly in the conversation UI.
What does a message look like when it has no digital signature, a mailbox-validated identity, or a trusted identity?
No Digital Signature
Mailbox Validated (T1)
Trusted Identity (T2 / T3 / T4)
Choose Your Trust Level.
Different conversations may call for different levels of trusted identity.
ZTmail lets you choose the identity level you want recipients to see when you chat.
T1
Mailbox Validated (MV)
you control this mailbox.T2
Individual Validated (IV)
you are this person.T3
Organization Validated (OV)
you are associated with this organization.T4
Sponsor Validated (SV)
you are this person and you belong to this organization.Want Your Identity to Be Visible?
Your email address alone may tell recipients where a message came from. A trusted identity can tell them more about who is behind it.
With a higher trust level, validated identity information, such as your name, country, and/or organization, can be displayed directly in the conversation UI, helping recipients understand who is behind the message.
If you want your identity to be visible at a higher trust level, explore ZTmail Trusted Identity Service.
S/MIME Identity Establishes Trust. Encryption Protects Conversation. S/MIME brings together trusted identity, digital signatures, and encryption in a single S/MIME certificate-based security framework.
Digital Signature
tag-cloudHelp recipients establish who sent the message and whether the signed content has been altered.
- Who sent it?
- Was it changed?
Encryption
Protect the message content so that only the intended recipient can read it. And save it encrypted in your mailbox.
- Who can read it?
- Where is it stored?
- Is it stored encrypted?
Signed + Encrypted
Combine trusted identity with end-to-end message protection, with encrypted storage in your mailbox.
- Identity
- Privacy
Your Mailbox. Your Keys. Your Messages.Your Chat conversation remains an encrypted email underneath.
It is protected by your S/MIME keys, stored encrypted in your own mailbox.
You do not need a separate centralized chat service or a separate message store to have a Chat experience.
You do not need a separate centralized chat service or a separate message store to have a Chat experience.
Your conversation is protected by end-to-end encryption between you and the person you're communicating with.
A Global Instant Messaging Ecosystem.The next generation of Chat does not have to depend on one global Chat provider.
- Multiple instant messaging providers can build their own experiences on the global email infrastructure while interconnecting through common communication and cryptographic foundations.
- Certificate authorities, cryptographic application automation service providers, security vendors, cloud service providers, and AI providers can contribute their existing capabilities.
- No single company needs to own the entire communication stack.
Start Now. Encrypted Chat, Built on the Global Email Network.Experience Chat on the same infrastructure that already connects the global email ecosystem.
Choose your trusted identity. Keep your conversation encrypted in your own mailbox. Move freely between Chat and Mail. And chat with people who can continue using their existing email clients. And explore a new model for interconnectable secure communication.