mailbird

Install command: 
brew install --cask mailbird

Name: Mailbird

Email client

https://www.getmailbird.com/

Cask JSON API: /api/cask/mailbird.json

Cask code: mailbird.rb on GitHub

Current version: 1.9.2

Requirements: macOS >= 13

Analytics:

Installs (30 days)
mailbird 9
Installs (90 days)
mailbird 28
Installs (365 days)
mailbird 131