OSS Tanbou
View on GitHub

Tuta Mail — open-source clients for encrypted email, contacts, and calendar

OSS scale score Not calculatedOSS health 85Update pace 127 commits/30d
About these scores

OSS scale score is an unbounded metric that log-compresses and weights Stars, Watchers, Forks, and Contributors. Discovery score is the current OSS scale score minus the score at discovery. Update pace is commits in the last 30 days, growth momentum is the OSS scale score difference within the recent observation window, and OSS health is a 0–100 rating based on available recency, Community Health, and release data.

Stars
7,922
Primary language
TypeScript
License
GPL-3.0
Repository last updated
Sep 18, 2026

Overview

Tuta Mail is a privacy-focused email service with built-in encryption, plus contacts and calendar access across web, Android, iOS, and desktop clients. This GitHub repository primarily contains those client implementations. The latest GitHub Release checked is 359.260904.0.

Features and best fit

Based on official documentation; not hands-on tested · Content checked:

Use encrypted mail, contacts, and calendar as one service

The README describes Tuta Mail as a secure email service with built-in end-to-end encryption, while the client codebase also contains contact and calendar functionality.

Sources: [2][1]

Ship web, Android, iOS, and desktop clients from the open-source codebase

Official distribution links and build documentation cover web and native/desktop client targets.

Sources: [2][3]

For users who want privacy-focused email and calendar across devices

It fits users prioritizing encrypted communication and a consistent client experience across web/mobile/desktop.

Sources: [2]

This repository is not a complete self-hostable Tuta mail-server distribution

The repository and build instructions focus on clients that connect to Tuta infrastructure; they do not document deploying the full Tuta mail service on your own server. It should therefore not be categorized as a conventional self-hosted mail server. The code is GPL-3.0.

Sources: [2][3][4][5]

Official sources

  1. [1]tutao/tutanota repository(2026-09-18)
  2. [2]Tuta README(2026-09-18)
  3. [3]Tuta BUILDING.md(2026-09-18)
  4. [4]Tuta LICENSE(2026-09-18)
  5. [5]Tuta 359.260904.0 release(2026-09-18)
Supplemental curator note

This repository primarily contains Tuta Mail/Calendar clients. You can build clients that connect to Tuta infrastructure, but the repository does not document deploying the complete Tuta mail server as a self-hosted service.

Try it in 3 steps

  1. 1

    Get the source

    git clone --depth 1 https://github.com/tutao/tutanota.git
  2. 2

    Enter the repository

    cd tutanota
  3. 3

    Check the official steps

    Continue with the commands in the README Installation, Quick Start, or Getting Started section.

    find . -maxdepth 1 -iname 'README*' -exec sed -n '1,220p' {} \; -quit
Check the official README

Growth

Growth trends · Last 30 days

7,922 Stars

Trend data is still being collected.

Development activity

Last 90 days · weekly

Commits (last 30 days)
127
Open PRs
33

Development activity is still being collected.

Built with

Categories and tags

Categories

Tags

GitHub data

GitHub dataView detailed GitHub data
View on GitHub

GitHub Topics

  • javascript
  • mithril
  • encryption
  • email
  • tutanota
  • security
  • privacy
Stars
7,922
Forks
638
Watchers
182
Open issues
942
Primary language
TypeScript
License
GPL-3.0
Repository last updated
Sep 18, 2026
Write a related article

Share a guide or use case for this OSS in Markdown. Articles are published after administrator approval.

Report incorrect information

Tell us if any listing information is incorrect or outdated.