thunderbird@beta

Install command: 
brew install --cask thunderbird@beta

Name: Mozilla Thunderbird Beta

Customizable email client

https://www.thunderbird.net/en-US/download/beta/

Cask JSON API: /api/cask/thunderbird@beta.json

Cask code: thunderbird@beta.rb on GitHub

Current version: 137.0b3

Current version requires: macOS >= 10.15

Analytics:

Installs (30 days)
thunderbird@beta 12
Installs (90 days)
thunderbird@beta 36
Installs (365 days)
thunderbird@beta 227
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