Menubar apps for macOS or tray app for Windows are useful tools that offers a quick access and handy functionalities in productive way. They often consist of a simple menu that you can lunch from the app icon on your menubar.
Correo is one of these useful app, as it allows you quick access to your Gmail for Windows and macOS.
It is designed by Amit Merchant, a software developer from India, who released it under MIT open-source license.
With Correo you can access your Gmail in one click, keep the app actively running in the background in your system tray.
If you are a Linux user, you can build your Linux build using Electron Builder.
The app is released under the MIT license.