tutanota

Install command: 
brew install --cask tutanota

Name: Tutanota Desktop

Email client

https://tutanota.com/

/api/cask/tutanota.json (JSON API)

Cask code on GitHub

Current version: 3.83.3

Analytics:

Installs (30 days)
tutanota 23
Installs (90 days)
tutanota 94
Installs (365 days)
tutanota 322
Fork me on GitHub