TutaBridge v0.1.0-rc.4

TutaBridge v0.1.0-rc.4

TutaBridge v0.1.0-rc.3

TutaBridge v0.1.0-rc.3

TutaBridge v0.1.0-rc.2

Second release candidate. Rebuilt from main, so the binaries now include everything merged since rc.1.

⚠️ Please read first. This bridge works against Tuta's end-to-end model and widens your attack surface. It is for advanced users who trust their own device but not necessarily the provider. See the README.

New since rc.1

• Read-only MCP server (opt in): let an LLM client like Claude read the mailbox over a local HTTP MCP server. Strictly read-only, with permission tiers (disabled / metadata / full), controlled from the GUI.
• Redesigned GUI: compact status dashboard with an activity log, sub-tabbed settings (Account / Sync / AI access), side-by-side connection settings.

Included

IMAP + SMTP on localhost (TLS), realtime sync, attachments both ways, whole-mailbox listing + honest search (metadata always, full-text body for downloaded messages), complete .eml backup, encrypted local cache, 2FA.

Install

Not code-signed, so the first launch needs one click: macOS right-click then Open; Windows More info then Run anyway; Linux chmod +x the AppImage or install the .deb / .rpm. Desktop app: TutaBridge-macOS.dmg / TutaBridge-Windows-setup.exe / TutaBridge-Linux.{AppImage,deb,rpm}. Headless CLI: tutabridge-<os> binaries, or the AUR (tutabridge-bin / tutabridge-git).

TutaBridge v0.1.0-rc.1

First public release candidate of TutaBridge, a local IMAP/SMTP bridge for Tuta encrypted email. It lets you use Tuta in Thunderbird, Apple Mail or any standard mail client.

⚠️ Please read first. This bridge works against Tuta's end-to-end model and widens your attack surface. It is meant for advanced users who trust their own device but not necessarily the provider. See the "Please read before using" section of the README.

What's included

• IMAP + SMTP servers on localhost (TLS) for any standard mail client
• Realtime sync over Tuta's WebSocket event bus
• Attachments both ways, drafts, custom and nested folders, move, trash, read/unread
• 2FA (TOTP) login
• Whole mailbox listed and searchable (subject, sender, date), plus full-text body search
• Complete .eml backup (CLI and GUI)
• Read-only MCP server (opt in) so an LLM client can read the mailbox
• Encrypted local cache (SQLCipher metadata + per-mail encrypted bodies)

Install

Pick your platform below. The builds are not code-signed, so the first launch needs one click to allow it:

• macOS: right-click the app, then Open, then Open.
• Windows: More info, then Run anyway.
• Linux: chmod +x the AppImage, or install the .deb / .rpm.

Platform	Desktop app	CLI binary
macOS (Apple Silicon)	TutaBridge_0.1.0_universal.dmg	tutabridge-macos-arm64
Windows (x64)	TutaBridge_0.1.0_x64-setup.exe / .msi	tutabridge-windows-x86_64.exe
Linux (x64)	.AppImage / .deb / .rpm	tutabridge-linux-x86_64

Known limitations

• Unsigned builds: expect Gatekeeper / SmartScreen warnings on first launch.
• Full-text body search covers downloaded bodies. Set sync_limit = 0 (or "keep every message body offline") for full coverage.
• This is a release candidate. Expect rough edges, and please file issues.