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Eppie

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What Eppie is

Eppie is an open-source email application from Tuvisoft OÜ in Tallinn, Estonia. It works with conventional email accounts, including Gmail, Microsoft Outlook, Proton Mail and other providers through IMAP and SMTP. Eppie’s signup creates a BIP39 seed phrase for keys, while its homepage describes ECDH email protection. Encrypted data is fragmented across a decentralized network, and the seed phrase can restore data and app settings. The project README also lists PGP encryption and encrypted local backups. Stable releases currently operate as conventional email clients with additional security features; decentralized functions are available in testnet builds. A July 2024 tutorial used an Azure-hosted testnet for decentralized messaging and described it as not yet a real decentralized network. Local AI processing of email is presented as an early proof of concept. Desktop downloads are listed for Windows, Linux and macOS, while Android and iOS are marked work in progress.

Who it suits

Eppie suits people seeking open-source email with conventional account compatibility and added encryption features. Users interested in decentralized messaging should note that those functions are in testnet builds.

What it does well

  • Open-source and free
  • Supports major email providers
  • PGP encryption and local backups
  • Seed phrase restores data and settings
  • Available on major desktop systems

What to know first

  • Decentralized features remain in testnet builds
  • Android and iOS are work in progress
  • Local AI is an early proof of concept
  • Products are not offered to under-18s

Verdict

Eppie combines familiar IMAP and SMTP email with seed-based security, PGP and encrypted backups. Its decentralized messaging and mobile coverage are less mature than its stable desktop email client.

Facts from Eppie's own pages

Age restriction
The privacy policy says Eppie's products and services are not offered to individuals under 18. · eppie.io, 12 Oct 2026
Blockchain messaging
The maker's blog says Bitcoin and Ethereum address messaging were working on its testnet. · blog.eppie.io, 12 Oct 2026
Desktop platforms
The repository lists testnet downloads for Windows, Linux, and macOS. · github.com, 12 Oct 2026
Development status
The repository says stable releases currently work as a conventional email client with additional security features, while decentralized functionality is available in testnet builds. · github.com, 12 Oct 2026
Email client
The maker says Eppie works with classic email accounts and has backward compatibility with traditional email. · eppie.io, 12 Oct 2026
Email compatibility
The homepage says Eppie works with classic email accounts; its project README lists Gmail, Microsoft Outlook, and Proton Mail support. · github.com, 5 Oct 2026
Email integrations
The project repository lists compatibility with Gmail, Microsoft Outlook, other major email providers, and Proton Mail authentication. · github.com, 12 Oct 2026
Email security features
The project README lists PGP encryption and encrypted local backup among its features. · github.com, 5 Oct 2026
Encryption
The maker says Eppie generates a BIP39 seed phrase for keys and protects emails using ECDH. · eppie.io, 12 Oct 2026
Headquarters
Tallinn, Estonia · eppie.io, 28 Sept 2026
Integrations
The project README says Eppie can interact with conventional IMAP/SMTP email and decentralized networks such as Ethereum. · github.com, 5 Oct 2026
Local AI
The maker's blog says local AI agents can process email on the user's computer, and describes the functionality as a proof of concept. · blog.eppie.io, 12 Oct 2026
Maker
The homepage footer identifies Tuvisoft OÜ and lists its address in Tallinn, Estonia. · eppie.io, 5 Oct 2026
Maker and location
The website identifies Tuvisoft OÜ and lists an address in Tallinn, Estonia. · eppie.io, 12 Oct 2026
Mobile availability
The repository marks Android and iOS as work in progress. · github.com, 12 Oct 2026
PGP
The project repository says PGP encryption is supported. · github.com, 12 Oct 2026
Platforms
The project README lists Windows, macOS, and Linux testnet builds; it marks App Store and Google Play distribution as work in progress and says Android and iOS are work in progress. · github.com, 5 Oct 2026
Privacy policy
The privacy policy says the website collects email addresses for development and product notifications and stores them for three years after the last email. · eppie.io, 12 Oct 2026
Product
Eppie describes itself as encrypted peer-to-peer independent email. · eppie.io, 12 Oct 2026
Recovery
The maker says data and app settings can be restored using a seed phrase. · eppie.io, 12 Oct 2026
Security reporting
The project's security policy says to report vulnerabilities privately through GitHub Private Vulnerability Reporting and that reports will be acknowledged within a few business days. · github.com, 5 Oct 2026
Storage
The maker says encrypted data is fragmented and stored in a decentralized network. · eppie.io, 12 Oct 2026
Support and participation
The homepage invites visitors to subscribe for updates and beta or early access, and links to the project GitHub for development status and contributions. · eppie.io, 5 Oct 2026
Testnet limitation
An Eppie blog post says decentralized messaging in its July 2024 tutorial used a testnet running on Azure and was not then a real decentralized network. · blog.eppie.io, 5 Oct 2026

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