iCloud: Mail overview
iCloud also keeps Mail rules, signatures, flag names, and Smart Mailboxes up to date on your iOS devices with iOS 6 or later, your Mac with OS X v10.8 or later, and iCloud Mail. If your iOS devices and Mac computers are also set up for iCloud Contacts, iCloud keeps your Mail VIP senders and recent recipients list up to date on those devices.
Access iCloud Mail from a web browser
To access iCloud Mail on iCloud.com, go to icloud.com/#mail and sign in using your Apple ID (the one you use with iCloud) or your @icloud.com email address (not an alias).
If you only see Pages, Numbers, Keynote, and Settings on iCloud.com, your account just has access to iCloud web-only features. To gain access to iCloud Mail and other iCloud features, set up iCloud on your iOS device or Mac.
If youʼre already using another iCloud app, click the app’s name at the top of the iCloud.com window, then click Mail.
When accessing iCloud Mail, make sure you use a browser recommended in the Apple Support article System requirements for iCloud.