If iCloud Mail hints that your disk space running low, or if you just want to get rid of deleted messages quickly, it’s time to empty the Trash folder. You can open the folder, highlight all mail and delete it, but you can also avoid opening the folder and use a toolbar menu item instead.
Empty the Trash Quickly in iCloud Mail
To permanently delete all messages in your iCloud Mail Trash folder quickly:
Log in to your iCloud account in your favorite browser. Click on the Mail icon to open iCloud Mail. Click the Actions gear at the bottom of the iCloud Mail sidebar. Select Empty Trash from the menu that comes up.
If you do not empty the Trash, messages in it are automatically be deleted after 30 days.
Erase Messages Immediately
You can also make iCloud Mail delete messages immediately instead of moving them to the Trash folder. To do this:
Click the Actions gear at the bottom of the iCloud Mail sidebar and choose Preferences. Click the General tab. In the Mailbox section, remove the check mark in front of Move deleted messages to. Click Done.
