Use Mail on iCloud.com
With Mail on iCloud.com, you can send and receive email from your iCloud Mail account using a web browser. If you have iCloud+, you can also send and receive email from a custom email domain (not available in all countries or regions).
Before you can use Mail on iCloud.com, you need to set up an iCloud Mail address. See Create a primary email address for iCloud Mail. If you want to import mail from a previous email account, see Import emails from another account into iCloud Mail.
Learn how to do any of the following in Mail on iCloud.com:
To set up iCloud Mail on your iPhone, iPad, or Mac, see Set up iCloud Mail on all your devices.
Note: If you don’t see Mail on iCloud.com, you may have web-only access. Learn about apps and features available for web-only accounts.