An iCloud email is an Apple-based email account. An iCloud email is recognizable because it always ends in one of three ways: @icloud.com, @me.com or @mac.com.
An Apple device is required to create a free iCloud email account. To create an account, first enable iCloud on an Apple device through the settings menu. Once enabled, an option to create an iCloud email account is available in the iCloud preferences menu. Although an Apple device such as an iPhone or a MacBook is required to create the email account, the account is subsequently accessible online and on products that are not Apple-based, such as a Microsoft computer.