MailItem.Close Method (Outlook)
Closes and optionally saves changes to the Outlook item.
expression A variable that represents a MailItem object.
The close behavior. If the item displayed within the inspector has not been changed, this argument has no effect.
This Visual Basic for Applications (VBA) example saves and closes the item displayed in the active inspector without prompting the user. To run this example, you need to have an item displayed in an inspector window.