Letro Letter is the main way of sending formal communication in our system. Every letter is encrypted, digitally signed, and protected using blockchain technology. This makes sure the message is secure, trusted, and cannot be changed. Whether you're sending important information or legal documents, Letro Letters help you share them in a reliable and professional way—much better than normal email or chat.

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.

Blockchain functions as a cryptographically secured digital ledger that permanently records every transaction or interaction, making it immune to manipulation or deletion. This immutability engenders trust and affirms authenticity in a way few other technologies can match.

Unlike typical end-to-end encryption, where a disappearing message leaves no trace, our approach ensures all messages, documents, signatures, and even images are fully encrypted—unreadable to both our servers and your device—yet each piece is independently verified, timestamped, and stored on the blockchain. As a result, these records remain perpetually accessible as irrefutable evidence.

For example, when you send a signed contract to a business partner, its blockchain 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.

Intelligent Agency Finder

Stop guessing who to contact. Our advanced search directs your message to the correct department or official, saving time and hassle.

One common reason messages go unanswered or get stuck in endless loops is that it takes too long for the right person to see them. In traditional channels, your request might bounce between departments before finally landing on the correct desk, causing delays and frustration.

Our Intelligent Agency Finder fixes that. It instantly identifies who should handle your request and routes it directly to them. Whether you’re contacting a government office, a corporate department, or a specialized team within a large organization, you connect with the right person right away—streamlining communication and speeding up the entire process.

Example: Need information on college grants? The agency finder leads you straight to the education grants specialist, no detours required.

Letro has built-in tools to help you stay productive. You can assign tasks, set deadlines, track who read your messages, and route letters to the right people. It’s more than just messaging—it helps you keep things moving forward in a clear and efficient way.

Letro makes collecting digital signatures easy and secure. You can send documents for signing directly in your message, and each signature is verified and protected. It’s perfect for agreements, contracts, and other important documents that need to be signed by the right person.

Intelligent Communication Templates

Sending a formal message doesn’t have to mean starting from scratch every time. With our built-in templates, you can request services, file complaints, or submit inquiries by simply selecting the right template and filling out a few key details—no need to type long messages from zero.

Businesses can also create and customize their own templates, ensuring users always have the most accurate and relevant forms at their fingertips. This way, communication becomes faster, more consistent, and less prone to errors, benefiting both users and organizations.

Each template is designed with all the required details and guidance built in, from the fields you must fill out to the documents you should attach. This means no missing information, no back-and-forth emails, and no wasted time. As soon as you submit your request, our system routes it directly to the right agent, team, or office. With templates, you’re not just sending messages—you’re creating seamless, efficient pathways to the precise help you need.

Example: if you want to request a copy of your tax records, just pick the “Tax Records Request” template and add your personal reference number. The rest is already structured for you.

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.

Need a quick update on an application? Have a small detail to clarify for your business request? Our Instant Chat puts you in direct contact with the right person, cutting through slow email threads and automated phone menus. To express yourself more, you can send images, documents or voice messages. Within seconds, you’ll be chatting with an agent or representative who can give you the answers you need, right when you need them—no waiting, no guesswork, just a fast, human-driven response.

Example:

Imagine you’re applying for a building permit and realize you need to confirm a minor detail about the approval process. Instead of searching through FAQ pages or waiting days for an email response, you open the Instant Chat. In seconds, you’re connected to the right city official who can clarify exactly what you need. The back-and-forth is fast and direct, so you can finalize your application and move forward without delay.

Quantum-Secure Protection

We secure your information with the highest level of protection—on par with leading financial institutions—by design. Our approach implement cutting-edge ‘trustless’ Zero-Knowledge Proof (ZKP) technology to ensure that even we cannot see your data, only verify its integrity.

Moreover, we’re prepared for tomorrow’s challenges: quantum computers, like Google’s “Willow” quantum CPU, are expected to break today’s standard encryption methods. By adopting next-generation encryption protocols now, we ensure your communications remain safe and private well into the future.

Example: When a government office sends you sensitive financial documents, they’re protected with ZKP-based protocols that confirm authenticity without revealing details to anyone else. And because we’ve planned for future threats, even a powerful quantum machine can’t breach your data’s secrecy.

Precision Action Prompts

Never miss a step again. When you need to complete a task—like signing a document or updating a form—we’ll send you a direct, easy-to-follow alert. Simply tap and act.

Example: An insurance company sends you a quick request: “Update your beneficiary details.” You receive a clear alert says ‘Update Details’, and with one click, you’re at the right form.

Letro works with both traditional business systems and Web3 tools. It connects smoothly with CRMs, ERPs, and even smart contracts. No matter what your team uses, Letro helps your tools and messages work together in a secure and flexible way.