VBA Macro for Outlook 2007 that will allow you to get a link for a particular message that is selected. Be sure to go to "Insert" > "UserForm" to be able to get a reference to the clipboard in your project for this to work.

Outlook07GetLinkOfMessage.vba

' Code lifted and adjusted from: http://superuser.com/questions/71786/can-i-create-a-link-to-a-specific-email-message-in-outlook
' You may have to enable links in Outlook if these links are destined for Outlook itself - http://www.davidtan.org/outlook-2007-adding-outlook-url-protocol/
' Reference: http://www.davidtan.org/create-hyperlinks-to-outlook-messages-folders-contacts-events/
' To Assign Keyboard Shortcut to your new Macro: http://stackoverflow.com/questions/57075/how-do-i-assign-a-keyboard-shortcut-to-a-vba-macro-in-outlook-2007


'Adds a link to the currently selected message to the clipboard
Sub AddLinkToMessageInClipboard()

   Dim objMail As Outlook.MailItem
   Dim doClipboard As New MSForms.DataObject

   'One and ONLY one message muse be selected
   If Application.ActiveExplorer.Selection.Count <> 1 Then
       MsgBox ("Select one and ONLY one message.")
       Exit Sub
   End If

   Set objMail = Application.ActiveExplorer.Selection.Item(1)
   'doClipboard.SetText "[[outlook:" + objMail.EntryID + "][MESSAGE: " + objMail.Subject + " (" + objMail.SenderName + ")]]"
   doClipboard.SetText "<a href='outlook:" + objMail.EntryID + "'>" + objMail.Subject + "'>"
   doClipboard.PutInClipboard

End Sub