Option Explicit

Sub GetPDFAttachments()
Dim olMsg As MailItem
    'On Error Resume Next
    Select Case Outlook.Application.ActiveWindow.Class
        Case olInspector
            Set olMsg = ActiveInspector.currentItem
        Case olExplorer
            Set olMsg = Application.ActiveExplorer.Selection.Item(1)
    End Select
    SaveAttachments olMsg
lbl_Exit:
    Exit Sub
End Sub

Private Sub SaveAttachments(olItem As MailItem)
'Graham Mayor - http://www.gmayor.com - Last updated - 26 May 2017
Dim olAttach As Attachment
Dim strFname As String
Dim strExt As String
Dim j As Long
Const strSaveFldr As String = "C:\Attachments\"

    CreateFolders strSaveFldr
    On Error Resume Next
    If olItem.Attachments.Count > 0 Then
        For j = 1 To olItem.Attachments.Count
            Set olAttach = olItem.Attachments(j)
            If olAttach.FileName Like "*.pdf" Then
                strFname = olAttach.FileName
                olAttach.SaveAsFile strSaveFldr & strFname
            End If
        Next j
        olItem.Save
    End If
lbl_Exit:
    Set olAttach = Nothing
    Set olItem = Nothing
    Exit Sub
End Sub

Private Function FolderExists(fldr) As Boolean
'An Outlook macro by Graham Mayor
Dim FSO As Object
    Set FSO = CreateObject("Scripting.FileSystemObject")
    If (FSO.FolderExists(fldr)) Then
        FolderExists = True
    Else
        FolderExists = False
    End If
lbl_Exit:
    Exit Function
End Function

Private Function CreateFolders(strPath As String)
'An Outlook macro by Graham Mayor
Dim strTempPath As String
Dim lngPath As Long
Dim VPath As Variant
    VPath = Split(strPath, "\")
    strPath = VPath(0) & "\"
    For lngPath = 1 To UBound(VPath)
        strPath = strPath & VPath(lngPath) & "\"
        If Not FolderExists(strPath) Then MkDir strPath
    Next lngPath
lbl_Exit:
    Exit Function
End Function