The Add method creates and returns a new Folder object in the Folders collection.
Set objFolder = objFoldersColl.Add(name)
The name parameter corresponds to the Name property of the Folder object.
The user must have permission to Add or Delete a Folder object. Most users have this permission only for their personal folders.
You do not need to call the Update method of the new Folder object when you Add it to the collection. However, when you set or change any of the folder's properties, you must call Update to save the changes in the MAPI system.
This code fragment adds a new folder to a user's Inbox:
Dim myInbox, newFolder As Object
Set myInbox = MAPI.Session.Inbox
' add new folder to Inbox
Set newFolder = myInbox.Folders.Add "Personal Messages"
' Update not needed until changes made