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Installing

claude edited this page Nov 10, 2026 · 1 revision

Installing: Get Preen into Thunderbird 140 or newer, or take it out again.

Installing

You need Thunderbird 140 or newer.

Thunderbird Add-ons (ATN)

ATN is the Thunderbird Add-ons site. Thunderbird keeps add-ons from ATN up to date for you. Preen is not on ATN yet, so use the file from GitHub below for now.

The other way: a file from GitHub

This way does not update itself yet. When a new version comes out, you must install it by hand.

  1. Open the Releases page.
  2. Download the file that ends in .xpi, for example preen-thunderbird-0.0.29.xpi.
  3. In Thunderbird, open Add-ons and Themes.
  4. Click the gear icon. Choose Install Add-on From File.
  5. Pick the .xpi file.

Or build it yourself

You need the source code. In its folder, run sh scripts/package.sh. It writes an .xpi file into the dist/ folder. Install it the same way as above. See Development.

After you install it

  1. Get an API key from OpenRouter or TypeSafe. See Getting an API key.
  2. Open Preen's settings.
  3. Follow Getting started.

Nothing is sent to anyone until you say yes in the settings.

Removing Preen

Remove it in Add-ons and Themes like any other add-on. This removes its settings, your API key, the activity log and your corrections from Thunderbird. Data you already sent to your provider stays under that provider's rules. See Privacy and data.

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