Folders help you to organize your email in an efficient way. You can right click on the folders for the context menu with respect to the folder. The small triangle in the left of a folder name indicates sub folders to the folder. You can expand the folder by clicking on the triangle.
The following are the default folders in the mailbox.
Mail has the following special folders.
Note:
When you click on a folder, you can view the Folder related statistics in the Preview pane, if you have chosen the three-pane view as default view for your account. You will be able to see the number of unread emails in the folder, the details of the most recent email received in the folder, details of conditions set in the filter that move the emails here. Additionally, you can view the number of emails with attachments.
Further to these details, you can view the details of the storage occupied by the folder and the percentage of storage it occupies relative to your accounts allotted storage.
The collective statistics of all the folders can be viewed from Folder Details. The stats include the details like the total number of emails in the folder, the size of the folder, number of archived emails and so on.
Steps to view the Folder Details:
By default, the folders are arranged in the order they are created. You can sort the folders alphabetically or use drag and drop to rearrange them to your preferred order.