'----------------------------------------------------------------------------------
' Procedure : ResolveDisplayNameToSMTP
' Author : Sue Mosher - updated by D.Bartrup-Cook to work in Excel late binding.
'-----------------------------------------------------------------------------------
Public Function ResolveDisplayNameToSMTP(sFromName, OLApp As Object) As String
Select Case Val(OLApp.Version)
Case 11 'Outlook 2003
Dim oSess As Object
Dim oCon As Object
Dim sKey As String
Dim sRet As String
Set oCon = OLApp.CreateItem(2) 'olContactItem
Set oSess = OLApp.GetNameSpace("MAPI")
oSess.Logon "", "", False, False
oCon.Email1Address = sFromName
sKey = "_" & Replace(Rnd * 100000 & Format(Now, "DDMMYYYYHmmss"), ".", "")
oCon.FullName = sKey
oCon.Save
sRet = Trim(Replace(Replace(Replace(oCon.email1displayname, "(", ""), ")", ""), sKey, ""))
oCon.Delete
Set oCon = Nothing
Set oCon = oSess.GetDefaultFolder(3).Items.Find("[Subject]=" & sKey) '3 = 'olFolderDeletedItems
If Not oCon Is Nothing Then oCon.Delete
ResolveDisplayNameToSMTP = sRet
Case 14 'Outlook 2010
Dim oRecip As Object 'Outlook.Recipient
Dim oEU As Object 'Outlook.ExchangeUser
Dim oEDL As Object 'Outlook.ExchangeDistributionList
Set oRecip = OLApp.Session.CreateRecipient(sFromName)
oRecip.Resolve
If oRecip.Resolved Then
Select Case oRecip.AddressEntry.AddressEntryUserType
Case 0, 5 'olExchangeUserAddressEntry & olExchangeRemoteUserAddressEntry
Set oEU = oRecip.AddressEntry.GetExchangeUser
If Not (oEU Is Nothing) Then
ResolveDisplayNameToSMTP = oEU.PrimarySmtpAddress
End If
Case 10, 30 'olOutlookContactAddressEntry & 'olSmtpAddressEntry
ResolveDisplayNameToSMTP = oRecip.AddressEntry.Address
End Select
End If
Case Else
'Name not resolved so return sFromName.
ResolveDisplayNameToSMTP = sFromName
End Select
End Function