You can mark messages as read or unread, delete them, and move them between folders.
Mark, Unmark, and Delete Messages
Right-click a message.
Choose Mark As Unread to mark the message as unread. Choose Mark As Read to mark the message as having been read.
Choose Delete to move a message to the Deleted Items folder.
Move Messages Between Folders
Click the message you want to move.
Drag and drop the message on the target folder, or...
Right-click the item and choose Move To Folder.
Select the target folder.
Click OK.
Tip
You can copy a message rather than move it, preserving the message in the original location. To copy a message, right-drag the message to the destination and choose Copy from the pop-up menu.