Mozilla Thunderbird Beta for Mac

What is Mozilla Thunderbird Beta?

Mozilla Thunderbird Beta is a macOS communication app: Customizable email client.

It is distributed as a Homebrew cask, which installs the .app into /Applications. Homebrew only automates download and installation; licence terms come from the vendor.

How to install Mozilla Thunderbird Beta

1. Open Terminal (press ⌘ + Space and type “Terminal”).
2. If Homebrew is not installed, run the install command below first.
3. Run brew install --cask thunderbird@beta.

Install Homebrew first if needed:

$/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"Copy

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Frequently asked questions

How do I install Mozilla Thunderbird Beta on a Mac?

Run brew install --cask thunderbird@beta in Terminal. This requires Homebrew; install it first with the command below if needed.

Is Mozilla Thunderbird Beta open source?

Homebrew metadata does not declare a licence for this app. Check the official website for the exact terms.

Does Mozilla Thunderbird Beta run on Apple silicon?

Yes, it ships a universal binary.

How popular is Mozilla Thunderbird Beta?

Homebrew analytics recorded 6 installs in the last 30 days, ranking it #9181 in this catalogue.

What version of Mozilla Thunderbird Beta is current?

The latest packaged version is 159.0b5.

Data comes from the public Homebrew API, last updated 2026-10-27. Install counts only include Homebrew installs and are not total users.