You can rename the personal message folders you have created on your device. You cannot rename the default folders: Inbox, Outbox, Drafts, and Sent.
To be able to rename a folder, your device must be connected to the PC.
To rename folders, do the following:
Under My folders, right-click the folder of your choice.
From the pop-up menu, select Rename. The cursor is placed in the name field and the field is editable.
Type a new name and press Enter.
The folder name is changed.
A notification is displayed if there is already a folder with the same name or the folder name contains invalid characters. Enter a new name and try again.