Se creeaza un script in VBA:

Sub LSPrint(Item As Outlook.MailItem)  
    On Error GoTo OError

    'detect Temp
    Dim oFS As FileSystemObject
    Dim sTempFolder As String
    Set oFS = New FileSystemObject
    'Temporary Folder Path
    sTempFolder = oFS.GetSpecialFolder(TemporaryFolder)

    'creates a special temp folder
    cTmpFld = sTempFolder & "OETMP" & Format(Now, "yyyymmddhhmmss")
    MkDir (cTmpFld)

    'save & print
    Dim oAtt As Attachment
    For Each oAtt In Item.Attachments
      FileName = oAtt.FileName
      FullFile = cTmpFld & "" & FileName

      'save attachment
      oAtt.SaveAsFile (FullFile)

      'prints attachment
      Set objShell = CreateObject("Shell.Application")
      Set objFolder = objShell.NameSpace(0)
      Set objFolderItem = objFolder.ParseName(FullFile)
      objFolderItem.InvokeVerbEx ("print")

    Next oAtt

    'Cleanup
    If Not oFS Is Nothing Then Set oFS = Nothing
    If Not objFolder Is Nothing Then Set objFolder = Nothing
    If Not objFolderItem Is Nothing Then Set objFolderItem = Nothing
    If Not objShell Is Nothing Then Set objShell = Nothing

  OError:
    If Err <> 0 Then
      MsgBox Err.Number & " - " & Err.Description
      Err.Clear
    End If
    Exit Sub

  End Sub

Se creeaza o regula noua astfel incat la sosirea mesajului sa ruleze scriptul de mai sus.