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Letro - Secure Communication

Letro - Secure Communication

Chat & Enterprise Letters

3 ratings
3 reviews
💼 Business
📊 Productivity
Free

Details

  • Released
  • Updated
  • May 6, 2026
  • August 16, 2026

Features

Developer

Letro
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About

This secure communication platform offers end-to-end encrypted messaging, file sharing, and document exchange for enterprises. It provides a tamper-proof, blockchain-verified record of all communications, designed to replace email and chat with enhanced security and compliance features.

✓End-to-end encryption
✓Blockchain-verified records
✓Spam and phishing proof
✓Role-based permissions
✓Automated approval chains
✓Decentralized and federated architecture
✓Offline communication capability
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What's New in Letro

1.3.13

August 16, 2026

Some localization and quality-of-life fixes.

User reviews

Most RecentHighest RatedLowest Rated

Dedicated server

For our organization, the dedicated server option was one of the main reasons to choose Letro. We wanted more control over where our communication is hosted while still having a modern and easy-to-use communication app. So far it has been a very good fit.
maalmasmaalmas

Legal / professional-services user

Letro feels designed for organizations that take confidentiality seriously. We particularly appreciate the combination of encrypted conversations, dedicated server support and the Letter feature. It fits professional communication much better than a typical messenger.
Aezoo KaramoozAezoo Karamooz

Servers

We use Letro for communication where confidentiality really matters. The encrypted messaging and privacy-focused approach give us much more confidence when discussing sensitive matters. Having our organization on a dedicated server is also a major advantage
Sepehr beigiSepehr beigi

FAQ

What makes Letro secure?

Letro utilizes end-to-end encryption built on the Matrix Protocol with quantum-resistant encryption. Your private keys never leave your device, ensuring only you hold the keys to your data. It also features blockchain verification for a permanent, tamper-proof record of all communications.

How does Letro prevent spam and phishing?

Letro is designed to be virtually impossible to spam or phish through its architecture. It requires KYC verification for account creation and ensures users only communicate with verified contacts, eliminating suspicious links and credential theft.

Can Letro be used offline?

Yes, Letro can function even when connectivity fails, subject to the private server solution. This makes it ideal for field operations, high-security environments, and regions with unreliable internet infrastructure.

What are the enterprise features of Letro?

Letro offers enterprise-grade features including role-based permissions, access controls, automated approval chains, escalation paths, and full audit trails for regulated industries. Its end-to-end encryption scales across organizational hierarchies.

Is Letro available on multiple devices?

Yes, Letro is supported on iPhone and iPad devices, allowing for secure communication across your Apple ecosystem.

How often is Letro updated?

The latest version of Letro is 1.3.13, and it was last updated on 2026-08-16. This indicates a commitment to ongoing development and maintenance.

What is the age rating for Letro?

Letro has an age rating of 12+, making it suitable for users aged 12 and above.

Does Letro have ads?

No, Letro is ad-free and does not contain advertisements.