Thunderbird - Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!
Cairo-Dock - Cairo-Dock / GLX-Dock 3. 4 is now available. Cairo-Dock 3. 4 is finally released! One year after the 3.
Microsoft Outlook - Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.
RocketDock - RocketDock is a Mac OS X dock clone.
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.
Dash to Dock - Gnome shell extension to position overview dashboard as a desktop launcher.