The Infrastructure Your Obligations Require

Deploy Letro in the model that matches your security requirements — managed cloud, private cloud, on-premise, or isolated environments — while keeping stronger control over where communication data resides.

Digital ID is our cutting-edge solution for secure and frictionless identity management. By verifying your passport for KYC, you seamlessly link official credentials—including your PostNumber—to your personal digital profile. With zero-knowledge proof functionality built into the Letro app, you can prove your identity to third-party services without revealing any sensitive information. It’s the perfect blend of transparency and privacy, ensuring your data stays yours—while still granting you the freedom to assert your identity whenever and wherever it’s needed.

Unlike typical chat application or email platforms, where users can create multiple accounts with a single static name, at Letro users can make only one account. As a result, Letro is spam free.

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Verify and audit the communication wherever and whenever that matters. Unlike traditional channels and chat applications, communication is absolutely formal with real trails.

For example, when you send a signed contract to a business partner, its record guarantees that neither party can alter the document, and its authenticity is indisputable—just like an official paper copy locked in a high-security vault.

Single Sign-On (SSO) with Letro streamlines the login process by allowing you to use a single set of credentials across multiple websites, eliminating the need to remember numerous usernames and passwords. With Letro’s SSO solution, you have complete control over the information you share—such as your name, birthday, and other personal details—by granting or revoking specific permissions. This ensures a seamless, secure experience that puts your privacy first, letting you decide what data is shared each time you sign in to a third-party website.

Also, companies can set their own enterprise SSO for streamling their special identity system.

In client communication, user experience for the client is vital. A complicated mobile and web experience frustrates your clients. Letro is designed with simplicity, professionalism and modernity.

Keep the conversational speed angle, but frame it as secure messaging inside formal workflows, not as casual chat. Letro is the ultra secure alternative to Microsoft Teams and Slack; say goodbyte to those platforms.

Letro's signature feature is auditable and secure. Unlike legacy tools such as DocuSign, at Letro you can audit, verify and present your signature wherever it's needed.

It’s perfect for agreements, contracts, and other important documents that need to be signed by the right person.

The award-winning and audited Olm/Megolm cryptography language ensures the end-to-end and secure encryption of Letro. The system operates without trust in any party. Consequently, every component of the platform from group messaging to video and voice calls is encrypted. Unlike Slack, group messaging is secure and your secure collaboration or group messaging will be conducted smoothly.

Manage all your incoming documents in one place. Our system files them automatically, letting you create folders, pin favorites, and access everything in seconds.

Example: A utility bill arrives and is instantly sorted into your “Monthly Bills” folder. Need it later? It’s pinned at the top for quick reference.

Filling Out a Form? It’s easy now!

Keeping track of important documents shouldn’t feel like a chore. Our app automatically sorts and stores everything you receive, letting you create custom folders, pin favorites for quick access, and find what you need in seconds. But we don’t stop at organization. Our system can securely extract key information from your passport and lock it away using Zero-Knowledge Proof (ZKP) technology. This means your sensitive data stays both private and verifiable.

Example: When an airline or government agency needs to confirm your identity, you don’t have to search through files or retype your details. Just tap, and the relevant passport info is instantly and securely available—no fuss, no risk.

Letro can be run on a private data server whether it is a public provider such as Infomaniak or an office server. This is in stark contrast to mainstream communication platforms where data is stored in a centralised data centre. With the world-class federation, encrypted content is transmitted between servers. This ensures that no one can control your data or share it with another agency.

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