The system folders are Inbox, Sent, Drafts, Junk, and Trash. You cannot move, rename, or delete these folders. System folders are always displayed at the top of your folder list, followed by any folders you create.
If you hover the cursor over a folder, the number messages in the folder and the size of the folder are displayed.
Inbox
New mail arrives in the Inbox.
Sent
A copy of each message you send is saved in the Sent folder.
Drafts
Messages you have composed but have not sent can be saved in the Drafts folder. If you open a message in the Drafts folder, it opens in the Compose view.
Junk
Most filtering of unsolicited automated mail (aka "spam" or "junk mail") is handled by a spam filter before those mail messages reach your Inbox. Mail that might possibly be junk mail, but isn't certain to be junk, may be placed in your Junk folder. You can review these messages and either move them or delete them. If you don't delete them, they will be purged after a period of time. If you find a message that is clearly not relevant, you can highlight it and click Junk on the tool-bar. The mail is moved to your Junk folder. Sometimes messages may be put in the Junk folder that are not really junk mail. Drag those messages to another folder. You can empty the Junk folder by right-clicking the folder from the left-hand pane and choosing Empty Junk.
Trash
Deleted items are placed in the Trash folder and remain there until you manually empty the trash or until the folder is purged automatically. Mail is purged from this folder after a specified period of time, as specified by your administrator. You can empty the trash by right-clicking the folder from the left-hand pane and choosing Empty Trash.
This feature is not available in the Lite and Mobile versions of Webmail.