VBA Code

objNamespace.GetDefaultFolder(Outlook.olDefaultFolders.olFolderInbox)
For Each objObject In objFolder.Items

Session

CDO Session
This is the CDO root object
Session.Logon
Session.Logoff
Session.GetMessage

Explorer Object

This is the window where the folders content are displayed

Me.ActiveExplorer.CurrentFolder.Name
Me.ActiveExplorer
Explorer.CurrentView
Explorer.Selection.Count

Inspector Object

This is the window where an Outlook item is displayed

Me.Inspectors 

Namespace Object

The Session property returns a Namespace object that enables you to access the underlying Outlook data store and give you access to the default folders.
You can access the Namespace object by using the Application's Session property

Dim objInbox As Outlook.MAPIFolder 
objInbox = Me.Session.GetDefaultFolder(olDefaultFolders.olFolderInbox) 

Dim objNamespace As Outlook.Namespace 
Dim objInbox As Outlook.MAPIFolder 
objNamespace = Application.Session 
objInbox = Me.Session.GetDefaultFolder(olDefaultFolders.olFolderInbox) 

Outlook Folders

Outlook Items - 16

Items are contained in folders
An Items collections can contain multiple types of objects
This collection always returns an Object so you must cast it to the correct Outlook item.