The following macros will save the messages without overwriting any existing messages with the same filename (whether or not you include the date - I have left it optional).
The main SaveMessage macro can be run as a script from a rule to save the messages as they arrive, to the named folder.
You can test it with TestMacro. Select a message and run the TestMacro several times to see how it handles filenames that exist.
Although aimed at Word the process at
http://www.gmayor.com/installing_macro.htm is virtually identical for Outlook.
Code:
Option Explicit
Sub SaveMessage(olItem As MailItem)
Dim Fname As String
Dim fPath As String
fPath = "C:\Path\" 'The folder to save the documents
Fname = olItem.Subject
'Next line is optional
'Fname = Format(olItem.ReceivedTime, "yyyymmdd") & Chr(32) & _
Format(olItem.ReceivedTime, "HH.MM") & Chr(32) & olItem.SenderName & " - " & Fname
Fname = Replace(Fname, Chr(58) & Chr(41), "")
Fname = Replace(Fname, Chr(58) & Chr(40), "")
Fname = Replace(Fname, Chr(34), "-")
Fname = Replace(Fname, Chr(42), "-")
Fname = Replace(Fname, Chr(47), "-")
Fname = Replace(Fname, Chr(58), "-")
Fname = Replace(Fname, Chr(60), "-")
Fname = Replace(Fname, Chr(62), "-")
Fname = Replace(Fname, Chr(63), "-")
Fname = Replace(Fname, Chr(124), "-")
SaveUnique olItem, fPath, Fname
lbl_Exit:
Exit Sub
End Sub
Sub TestMacro()
Dim olMsg As MailItem
On Error GoTo lbl_Exit
Set olMsg = ActiveExplorer.Selection.Item(1)
SaveMessage olMsg
lbl_Exit:
Exit Sub
End Sub
Private Function SaveUnique(oItem As Object, _
strPath As String, _
strFilename As String)
Dim lngF As Long
Dim lngName As Long
lngF = 1
lngName = Len(strFilename)
Do While FileExists(strPath & strFilename & ".msg") = True
strFilename = Left(strFilename, lngName) & "(" & lngF & ")"
lngF = lngF + 1
Loop
oItem.SaveAs strPath & strFilename & ".msg"
lbl_Exit:
Exit Function
End Function
Private Function FileExists(filespec) As Boolean
Dim fso As Object
Set fso = CreateObject("Scripting.FileSystemObject")
If fso.FileExists(filespec) Then
FileExists = True
Else
FileExists = False
End If
lbl_Exit:
Exit Function
End Function