Manage junk mail in Mail on iCloud.com
Most junk mail (spam) sent to your @icloud.com address or its aliases is automatically identified and moved to your Junk folder. If you receive unwanted email, you can manually mark it as junk.
Important: Because emails in the Junk folder are automatically deleted after 30 days, periodically check the Junk folder for emails that were mistakenly marked as junk.
Mark an email as junk
In Mail on iCloud.com, tap Edit at the top of the email list, then tap
next to the email or emails you want to mark as junk.Tap Mark at the bottom of the email list, then tap Move to Junk.
Subsequent emails from the same sender are automatically marked as junk.
Indicate that an email is not junk
In Mail on iCloud.com, tap the Junk folder in the Mailboxes list.
Tap Edit at the top of the email list, then tap
next to the email or emails.Tap Mark at the bottom of the email list, then tap Move to Inbox.
Subsequent emails from the same sender are no longer automatically marked as junk.
Empty the Junk mailbox
You can delete all the emails in the Junk mailbox at the same time.
In Mail on iCloud.com, tap
at the top of the Mailboxes list.Choose Empty Junk, then tap Empty Junk again.
You can also delete individual emails in the Junk mailbox. See Delete email in Mail on iCloud.com.