This paper briefs about new free and open source microkernel based Operating system framework, Genode. It shows the building of a SMTP (Simple Mail Transfer Transfer protocol) based Mail client application and further porting the same inside Genode Operating system framework. The application is developed using Qt user interface design application framework and further built and ported inside Genode using make and run files. By this application, user can add his email account, view, send and manage the account. Since the operating system is still in developing stage, this application would help in its improvement.