mailbutler

Install command: 
brew install --cask mailbutler

Name: Mailbutler

Personal assistant and productivity tool for Apple Mail

https://www.mailbutler.io/

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

Cask code: mailbutler.rb on GitHub

Current version: 8226,3630918

Requirements: macOS >= 10.13

Analytics:

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mailbutler 3
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mailbutler 41