iCloud: Set up iCloud Mail on your devices
After you have set up an @icloud.com email address, you can use your iCloud Mail account on your devices, as well as on a web browser with either a Mac or Windows computer.
Set up iCloud Mail on your iOS device
Go to Settings > [your name] > iCloud (or Settings > iCloud), then turn on Mail.
Set up iCloud Mail on your Mac
Choose Apple menu > System Preferences, click iCloud, then select Mail.
Set up iCloud Mail on your Windows computer with Outlook
Open iCloud for Windows.
Select Mail, Contacts, Calendars, and Tasks.
Your iCloud Mail account is listed in the folder list (also called the navigation pane) on the left side of Microsoft Outlook. To view your iCloud Mail folders in Outlook, click the disclosure triangle to the left of your iCloud email account.
Access iCloud Mail on your Windows computer without Outlook
If Microsoft Outlook is not installed, the Mail, Contacts, Calendars, and Tasks option doesn’t appear in iCloud for Windows. Use your web browser to access Mail on iCloud.com.
Set up other email apps
See the Apple Support article Mail server settings for email clients