mailspring

Install command: 
brew install --cask mailspring

Name: Mailspring

Fork of Nylas Mail

https://getmailspring.com/

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

Cask code on GitHub

Current version: 1.15.0

Requires: macOS >= 11

Variations:

Intel sequoia 1.15.0
sonoma 1.15.0
ventura 1.15.0
monterey 1.15.0
big sur 1.15.0

Analytics:

Installs (30 days)
mailspring 51
Installs (90 days)
mailspring 150
Installs (365 days)
mailspring 688
Fork me on GitHub