I have the below in Outlook and no emails are populating on my desktop spreadsheet. This is a test. I need to have 7 mailbox folders to export to 7 worksheets in an email tracking workbook. Maybe there is something incorrect in the below. Any help would be appreciated, thank you. 
Public WithEvents GMailItems As Outlook.Items
Private Sub Application_Startup()
    Set GMailItems = Outlook.Application.Session.GetDefaultFolder(olFolderInbox).Items
End Sub
Private Sub GMailItems_ItemAdd(ByVal Item As Object)
    Dim xMailItem As Outlook.MailItem
    Dim xExcelFile As String
    Dim xExcelApp As Excel.Application
    Dim xWb As Excel.Workbook
    Dim xWs As Excel.Worksheet
    Dim xNextEmptyRow As Integer
    On Error Resume Next
    If Item.Class <> olMail Then Exit Sub
    Set xMailItem = Item
    xExcelFile = "C:\Users\mmos6\Desktop\Outlook.xlsx"
    If IsWorkBookOpen(xExcelFile) = True Then
        Set xExcelApp = GetObject(, "Excel.Application")
        Set xWb = GetObject(xExcelFile)
        If Not xWb Is Nothing Then xWb.Close True
    Else
        Set xExcelApp = New Excel.Application
    End If
    Set xWb = xExcelApp.Workbooks.Open(xExcelFile)
    Set xWs = xWb.Sheets(1)
    xNextEmptyRow = xWs.Range("B" & xWs.Rows.Count).End(xlUp).Row + 1
    With xWs
        .Cells(xNextEmptyRow, 1) = xNextEmptyRow - 1
        .Cells(xNextEmptyRow, 2) = xMailItem.Received
        .Cells(xNextEmptyRow, 3) = xMailItem.StartDate
        .Cells(xNextEmptyRow, 4) = xMailItem.FlagCompletedDate
        .Cells(xNextEmptyRow, 5) = xMailItem.Categories
        .Cells(xNextEmptyRow, 6) = xMailItem.From
        .Cells(xNextEmptyRow, 7) = xMailItem.To
        .Cells(xNextEmptyRow, 8) = xMailItem.CC:
        .Cells(xNextEmptyRow, 9) = xMailItem.Subject
    End With
    xWs.Columns("A:I").AutoFit
    xWb.Save
End Sub
Function IsWorkBookOpen(FileName As String)
    Dim xFreeFile As Long, xErrNo As Long
    On Error Resume Next
    xFreeFile = FreeFile()
    Open FileName For Input Lock Read As #xFreeFile
    Close xFreeFile
    xErrNo = Err
    On Error GoTo 0
    Select Case xErrNo
        Case 0: IsWorkBookOpen = False
        Case 70: IsWorkBookOpen = True
        Case Else: Error xErrNo
    End Select
End Function