VBA MACRO - Export Email Address To Excel - excel

Question

I have a VBA code here that export email addresses of a chosen subfolder to an Excel file. My problem is that, it only works to only one of my folders.
When I try using this macro to other folders, I'm getting a "Run Time Error 13 TYPE MISMATCH" error. I really don't have an idea why I am getting this error. I hope someone could help me detect where the problem came from.
Here's my code:
Sub ExportToExcel()
Dim appExcel As Excel.Application
Dim wkb As Excel.Workbook
Dim wks As Excel.Worksheet
Dim rng As Excel.Range
Dim strSheet As String
Dim strPath As String
Dim intRowCounter As Integer
Dim intColumnCounter As Integer
Dim msg As Outlook.MailItem
Dim nms As Outlook.NameSpace
Dim fld As Outlook.MAPIFolder
Dim itm As Object
strSheet = "OutlookItems.xlsx"
strPath = "C:\Users\Gabriel.Alejandro\Desktop\"
strSheet = strPath & strSheet
Debug.Print strSheet
'Select export folder
Set nms = Application.GetNamespace("MAPI")
Set fld = nms.PickFolder
'Handle potential errors with Select Folder dialog box.
'Open and activate Excel workbook.
Set appExcel = CreateObject("Excel.Application")
appExcel.Workbooks.Open (strSheet)
Set wkb = appExcel.ActiveWorkbook
Set wks = wkb.Sheets(1)
wks.Activate
appExcel.Application.Visible = True
'Copy field items in mail folder.
For Each itm In fld.Items
intColumnCounter = 1
Set msg = itm 'The part where I am getting the ERROR
intRowCounter = intRowCounter + 1
Set rng = wks.Cells(intRowCounter, intColumnCounter)
rng.Value = msg.To
intColumnCounter = intColumnCounter + 1
Set rng = wks.Cells(intRowCounter, intColumnCounter)
rng.Value = msg.SenderEmailAddress
Next itm
Set appExcel = Nothing
Set wkb = Nothing
Set wks = Nothing
Set rng = Nothing
Set msg = Nothing
Set nms = Nothing
Set fld = Nothing
Set itm = Nothing
Exit Sub
Set appExcel = Nothing
Set wkb = Nothing
Set wks = Nothing
Set rng = Nothing
Set msg = Nothing
Set nms = Nothing
Set fld = Nothing
Set itm = Nothing
End Sub

Answer 1

You assume every itm is a mailitem.
You could skip an item if it is not a mailitem:
For Each itm In fld.items
intColumnCounter = 1
If itm.Class = olMail Then
Set msg = itm
intRowCounter = intRowCounter + 1
Set rng = wks.Cells(intRowCounter, intColumnCounter)
rng.Value = msg.To
intColumnCounter = intColumnCounter + 1
Set rng = wks.Cells(intRowCounter, intColumnCounter)
rng.Value = msg.senderemailaddress
Else
Debug.Print " Item is not a mailitem."
End If
Next itm
You could instead bypass errors if the item does not have the properties you want.
For Each itm In fld.items
intColumnCounter = 1
intRowCounter = intRowCounter + 1
Set rng = wks.Cells(intRowCounter, intColumnCounter)
On Error Resume Next
rng.Value = itm.To
On Error GoTo 0
intColumnCounter = intColumnCounter + 1
Set rng = wks.Cells(intRowCounter, intColumnCounter)
On Error Resume Next
rng.Value = itm.senderemailaddress
On Error GoTo 0
Next itm