aerc - Highly efficient and extensible email client for the terminal
Microsoft Outlook - Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.
Coolify - An open-source, hassle-free, self-hostable Heroku & Netlify alternative.
Mailbird - Mailbird is the best email client for Windows 7, 8 and 10
Netlify - Build, deploy and host your static site or app with a drag and drop interface and automatic delpoys from GitHub or Bitbucket
eM Client - eM Client is a fully-featured email client for Windows and macOS with a clean and easy-to-use interface. eM Client also offers features for calendars, tasks, contacts, notes, and chat.