Download TabMail

Available on iPhone and desktop

iPhone

Agentic AI email on the go

Smart triage · AI replies · Chat with your inbox · Chat to edit · Zero data retention
Download on the App Store

Desktop

AI-powered add-on for Thunderbird

macOS · Windows · Linux · Open source
Installation options ↓

Desktop Installation

Choose your preferred installation method.

Download and run the installer for your platform. If Thunderbird is not installed, the installer can download and install the official Mozilla Thunderbird build. It will then configure Thunderbird to install the TabMail add-on for all users and set up the required native full-text search helper.

macOS

Intel & Apple Silicon

Download .pkg

Windows

Windows 10 & 11

Download .exe

For users who already have Thunderbird installed or prefer manual control over the installation process.

Step 1: Install the Add-on (XPI)

Download the Thunderbird add-on and install it manually into your existing Thunderbird installation.

tabmail-latest.xpi
  1. Download the XPI file above
  2. Open Thunderbird
  3. Go to Tools → Add-ons and Themes (or press Ctrl/Cmd + Shift + A)
  4. Click the gear icon ⚙️ and select "Install Add-on From File..."
  5. Select the downloaded XPI file

Step 2: Install the Full-Text Search Helper (Required)

Hybrid search needs a small native helper that builds your search index on your device. It runs entirely on your machine — nothing is uploaded. No admin/sudo required; it installs to your user folder.

curl -fsSL https://raw.githubusercontent.com/TabMail/tabmail-native-fts/main/scripts/install.sh | bash

Prefer to inspect it first? Read install.sh on GitHub → It downloads our notarized helper binary and registers it with Thunderbird — nothing else.

  1. Open Terminal
  2. Run the command above (no sudo needed)
  3. That's it — no need to restart Thunderbird
irm https://raw.githubusercontent.com/TabMail/tabmail-native-fts/main/scripts/install.ps1 | iex

Prefer to inspect it first? Read install.ps1 on GitHub → It downloads our helper binary and registers it with Thunderbird — nothing else.

  1. Open PowerShell (no admin needed)
  2. Run the command above
  3. That's it — no need to restart Thunderbird

The Full-Text Search Helper is a small native program that builds a private search index of your mail on your device, powering TabMail's hybrid keyword + semantic search. It runs entirely on your machine — nothing is uploaded. No admin required, it installs to your user folder, and you don't need to restart Thunderbird.

Used the Installer? The helper is already set up — you don't need to do anything here. These steps are for people who installed the add-on manually.

macOS

Intel & Apple Silicon · no admin

Download .pkg

Windows

Windows 10 & 11 · no admin

Download .exe

Signed & notarized. Installs to your user folder (no admin), and there's no need to restart Thunderbird — TabMail detects the helper automatically.

Manual install (or Linux)

Prefer a script, or running Linux (no one-click installer)? Run the one-liner for your platform instead.

curl -fsSL https://raw.githubusercontent.com/TabMail/tabmail-native-fts/main/scripts/install.sh | bash

Prefer to inspect it first? Read install.sh on GitHub → It downloads our notarized helper binary and registers it with Thunderbird — nothing else.

  1. Open Terminal
  2. Run the command above (no sudo needed)
  3. That's it — no need to restart Thunderbird
irm https://raw.githubusercontent.com/TabMail/tabmail-native-fts/main/scripts/install.ps1 | iex

Prefer to inspect it first? Read install.ps1 on GitHub → It downloads our helper binary and registers it with Thunderbird — nothing else.

  1. Open PowerShell (no admin needed)
  2. Run the command above
  3. That's it — no need to restart Thunderbird

System Requirements

  • Thunderbird: Version 140.0 or later
  • macOS: macOS 11 (Big Sur) or later (Intel & Apple Silicon)
  • Windows: Windows 10 (64-bit) or later
  • RAM: 4GB minimum, 8GB recommended
  • Storage: 200MB for Thunderbird + space for your emails and search index