Epistles for Windows

Unified email client for Fastmail, Gmail, Microsoft Exchange, ProtonMail, and IMAP. Native Windows install via NSIS. Requires Windows 10 22H2 or later.

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All builds

Epistles 0.9.1 — x64 (Intel/AMD)

Epistles 0.9.1 — ARM64 (Snapdragon X, Surface Pro 11/12)

Install via winget

winget install Epistles.Epistles

Verifying signatures. The installer is Authenticode-signed; right-click the .exe → Properties → Digital Signatures to inspect the certificate chain. Updates are additionally signed with our ed25519 release key — Tauri's auto-update verifier checks the signature before applying.

Auto-update. Once installed, Epistles checks https://repo.epistles.com/windows/latest.json on launch and applies updates silently in the background. To opt out: Settings → Updates → Disable automatic updates.