iCloud email is an application that helps you to sync information that is stored on your iOS device with a mail account. iCloud also use the IMAP and SMTP server protocols for configuration. You can manually configure your iCloud email account settings as per your needs. Whereas the Windows Live Mail application, which is truly available for the Windows computer is discontinued by Microsoft. After discontinuing the Windows Live Mail application, Microsoft has merged all of its email services such as Office 365, Hotmail, Live Mail, MSN Mail, etc., into a single codebase at Outlook.com. But, still, you can use the Windows Live Mail application for icloud email settings for Windows live mail
1. Microsoft has stoped its support for the Windows Live Mail application from 30 June 2016.
2. The iCloud mail account does not support the POP protocol.
Internet Message Access Protocol (IMAP) of iCloud email account