Install atbridge.ai

In short: installing atbridge.ai is three steps — run the one-line installer for your OS, add the @bridge add-on to Thunderbird, and activate your license. Mostly clicking; about five minutes on macOS, Linux, or Windows.

Three steps. Mostly clicking.

Tip

The single-command install below handles 90% of cases out of the box; if you hit something the script doesn’t, scroll to the bottom for a “stuck?” form that goes straight to a human.

What you need before you start

• Thunderbird 128 or newer. Check via Help → About Thunderbird. Download Thunderbird if you don’t have it yet.
• At least one mail account configured in Thunderbird, with “Keep messages for this account on this computer” enabled. Most people already have this on by default — we’ll verify in step 3.

1. Install the atbridge.ai app

Pick your operating system:

macOS / Linux

Open a terminal and paste:

curl -fsSL https://atbridge.ai/install.sh | sh

The script downloads the atbridge command (a single static binary — no Node, no Python, no dependencies), verifies its checksum, and registers it with your Thunderbird profile.

To verify after:

atbridge --version

You should see a version number.

Windows

Open PowerShell and paste:

irm https://atbridge.ai/install.ps1 | iex

The script downloads the atbridge command (a single static binary — no Node, no Python, no dependencies), verifies its checksum, and registers it with your Thunderbird profile.

To verify after (in a fresh PowerShell window so PATH is current):

atbridge --version

You should see a version number.

2. Install the Thunderbird add-on

1. In Thunderbird, open Tools → Add-ons and Themes.

2. Click the gear icon → Install Add-on from file…

3. Select atbridge-extension.xpi (get it from the download page) and confirm the permission prompt.

4. You’ll see “atbridge.ai” appear in the add-ons list with a green check.

3. Connect them

In a terminal (or PowerShell on Windows), run:

atbridge bridge install

This connects atbridge.ai to your Thunderbird. No further configuration needed.

Then activate your plan — the easiest path is auto-detect:

atbridge license activate

That walks your Thunderbird accounts and picks the right plan. Tell us your Thunderbird account email if you bought a Personal or Pro plan, or just press enter to start the 14-day free trial if you’d like to try everything first.

4. Verify

Run:

atbridge license status --pretty

You should see your plan, status ok, and a row that says Local storage enabled ✓. That last one means Thunderbird can keep messages locally for search — without it, your AI won’t be able to find anything when you ask.

If that row says DISABLED, in Thunderbird open Account Settings → Synchronization & Storage and tick “Keep messages for this account on this computer”. Then click Download Now.

Next: connect your AI

You’re installed. Now hook up your AI assistant →

Stuck?

If something broke at any of the steps above and the error message didn’t point at a clear fix, drop a note here. It goes straight to a human — we read every one.

Your email

What happened? (Paste the exact error message if you have one — it helps a lot.)

Website

Send to a human