electronmail

Install command: 
brew install --cask electronmail

Name: ElectronMail

Unofficial ProtonMail Desktop App

https://github.com/vladimiry/ElectronMail

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

Cask code: electronmail.rb on GitHub

Current version: 5.3.0

Current version requires: macOS >= 11

Versions:

Intel sequoia 5.3.0
sonoma 5.3.0
ventura 5.3.0
monterey 5.3.0
big sur 5.3.0

Analytics:

Installs (30 days)
electronmail 1
Installs (90 days)
electronmail 12
Installs (365 days)
electronmail 60
Fork me on GitHub