iCloud
iCloud User Guide
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Welcome
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What is iCloud Photos?
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Shared Albums in iCloud
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Turn on Shared Albums on your devices
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Invite people to view your shared albums
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Add photos and videos to shared albums
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Delete photos from shared albums
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View your Family album
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View albums that have been shared on the web
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Resend invitations to your shared albums
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Remove shared albums
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Pages for iCloud
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Numbers for iCloud
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Keynote for iCloud
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What is iCloud Settings?
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Change your Apple ID photo
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View and change Family Sharing settings
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Check your storage usage
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Manage your devices
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Remove cards from Apple Pay and Wallet
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Change your Apple ID password
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Change the language or time zone
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Change date and other formats
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Restore your contacts, calendars and reminders, or bookmarks
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Prevent apps from showing your name
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More resources

If your iCloud mailbox is full
If you use the Mail app on your Mac to receive iCloud Mail and your iCloud storage fills up, you won’t be able to receive new email until you make more iCloud storage space available. You can do any of the following:
Delete iCloud Mail messages. See the Mail section of the Apple Support article Manage your iCloud storage.
The Mail app on your Mac stores email in iCloud because, by default, Mail uses IMAP for your iCloud email account.
See the Mail User Guide to use Mail on your Mac.
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