deltachat

Install command: 
brew install --cask deltachat

Name: DeltaChat

Chat via the e-mail server network

https://delta.chat/

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

Cask code: deltachat.rb on GitHub

Current version: 2.25.3

Requirements: macOS >= 11

Versions:

Intel tahoe 2.25.3
sequoia 2.25.3
sonoma 2.25.3
ventura 2.25.3
monterey 2.25.3
big sur 2.25.3

Analytics:

Installs (30 days)
deltachat 63
Installs (90 days)
deltachat 214
Installs (365 days)
deltachat 706