This Visual Basic for Applications example uses the Members property of an AddressEntry object to display all the members in an e-mail alias in the Global Address List named "My Group". To access the Members property, the DisplayType of the AddressEntry must be a distribution list.
To use this example, substitute the name of an e-mail alias for which you would like to view the members.
Sub DisplayMembersOfAlias()
Set myOlApp = CreateObject("Outlook.Application")
Set myNameSpace = myOlApp.GetNameSpace("MAPI")
'Set myAddressList to
'the Global Address List
'within the AddressLists
'collection.
Set myAddressList = myNameSpace.AddressLists("Global Address List")
'Set myAddressEntry
'to the entry in the
'AddressEntries
'collection named
'"My Group" which is
'a distribution list.
Set myAddressEntry = myAddressList.AddressEntries("My Group")
'Display each member in the
'alias.
For Each memberEntry In myAddressEntry.Members
MsgBox memberEntry
Next
End Sub