As its name implies, eM Client is an email client designed for Windows. The tool comes with other interesting features as well, such as calendars, contacts and tasks. It can be easily handled by users of any level of experience. The interface of the app is clean and intuitive; you can set up a new account by inputting account, calendar and contact credentials, IMAP and SMTP details and chat settings. Plus, eM Client can diagnose problems which may occur with these options.