Right-click a folder or subfolder to display a menu with the following options:
Mark All Messages As Read: Marks all the messages in the folder as read.
New Folder: Creates a new folder or subfolder in the same location.
Copy Folder To: Copies the folder to a different location. When you select this item, Evolution offers a choice of locations to copy the folder to.
Move Folder To: Moves the folder to another location.
Delete: Deletes the folder and all contents.
Rename: Lets you change the name of the folder.
Refresh: Refreshes the folder.
Properties: Shows the number of total and unread messages in a folder.
You can also rearrange folders and messages by dragging and dropping them.
Any time new e-mail arrives in an e-mail folder, that folder label is displayed in bold text, along with the number of new messages in that folder.