Vba to monitor time to respond to emails using a shared mailbox

Outlook version
Outlook 2016 32 bit
Email Account
Office 365 Exchange
I am using excel vba as I wish to output to excel and match inbox items received into sub folders and the response time by members of a shared mailbox
I have never used outlook vba but have cobbled together the code below from various internet posts so don't fully understand it all so I am looking for your kind assistance and paciance
The code works as expected from my personal inbox giving me the inbox mail items and the relevant response. I added a picker to let me select which inbox sub folder to select mails from and that works also however it does not return responses from the shared mailbox
Can you identify where I am going wrong please
Sorry i couldn't attach the file as it is excel the forum does not allow this file format
Much appreciated

Code used is

Public ns As Outlook.Namespace

Private Const EXCHIVERB_FORWARD = 104

Private Const PR_LAST_VERB_EXECUTED = "http://schemas.microsoft.com/mapi/proptag/0x10810003"
Private Const PR_LAST_VERB_EXECUTION_TIME = "http://schemas.microsoft.com/mapi/proptag/0x10820040"
Private Const PR_SMTP_ADDRESS = "http://schemas.microsoft.com/mapi/proptag/0x39FE001E"
Private Const PR_RECEIVED_BY_ENTRYID As String = "http://schemas.microsoft.com/mapi/proptag/0x003F0102"

Private Function GetReply(olMailItem As MailItem) As MailItem

On Error Resume Next

Dim conItem As Outlook.Conversation
Dim ConTable As Outlook.Table
Dim ConArray() As Variant
Dim MsgItem As MailItem
Dim lp As Long
Dim LastVerb As Long
Dim VerbTime As Date
Dim Clockdrift As Long
Dim OriginatorID As String

Set conItem = olMailItem.GetConversation
OriginatorID = olMailItem.PropertyAccessor.BinaryToString(olMailItem.PropertyAccessor.GetProperty(PR_RECEIVED_BY_ENTRYID))

If Not conItem Is Nothing Then
Set ConTable = conItem.GetTable
ConArray = ConTable.GetArray(ConTable.GetRowCount)
LastVerb = olMailItem.PropertyAccessor.GetProperty(PR_LAST_VERB_EXECUTED)
Select Case LastVerb
VerbTime = olMailItem.PropertyAccessor.GetProperty(PR_LAST_VERB_EXECUTION_TIME)
VerbTime = olMailItem.PropertyAccessor.UTCToLocalTime(VerbTime)
Debug.Print "Reply to " & olMailItem.Subject & " sent on (local time): " & VerbTime
For lp = 0 To UBound(ConArray)
If ConArray(lp, 4) = "IPM.Note" Then
Set MsgItem = ns.GetItemFromID(ConArray(lp, 0))
If Not MsgItem.Sender Is Nothing Then
If OriginatorID = MsgItem.Sender.ID Then
Clockdrift = DateDiff("s", VerbTime, MsgItem.SentOn)
If Clockdrift >= 0 And Clockdrift < 300 Then
Set GetReply = MsgItem
Exit For
End If
End If
End If
End If
Case Else
End Select
End If

End Function

Public Sub ListIt()
Dim myOlApp As New Outlook.Application
Dim myItem As Object
Dim myReplyItem As Outlook.MailItem
Dim MyFolder As Folder
Dim xlRow As Long
'Application.ScreenUpdating = False
Set ns = Outlook.GetNamespace("MAPI")
'Set ns = myOlApp.GetNamespace("MAPI")
'Set MyFolder = ns.GetDefaultFolder(olFolderInbox)
Set MyFolder = ns.PickFolder

xlRow = 3
For Each myItem In MyFolder.Items
If myItem.Class = olMail Then
Set myReplyItem = GetReply(myItem)
If Not myReplyItem Is Nothing Then
PopulateSheet ActiveSheet, myItem, myReplyItem, xlRow
xlRow = xlRow + 1

Else: PopulateSheet ActiveSheet, myItem, myReplyItem, xlRow
xlRow = xlRow + 1
End If
End If
'Application.ScreenUpdating = True
'MsgBox "Done"

End Sub

Private Sub PopulateSheet(mySheet As Worksheet, myItem As MailItem, myReplyItem As MailItem, xlRow As Long)

On Error Resume Next

Dim recips() As String
Dim Recipients As Outlook.Recipient
Dim lp As Long

With mySheet
.Cells(xlRow, 1).FormulaR1C1 = myItem.Sender.PropertyAccessor.GetProperty(PR_SMTP_ADDRESS)
.Cells(xlRow, 2).FormulaR1C1 = myItem.Subject
.Cells(xlRow, 3).FormulaR1C1 = myItem.ReceivedTime
.Cells(xlRow, 4).FormulaR1C1 = myItem.Categories
.Cells(xlRow, 5).FormulaR1C1 = myReplyItem.Sender.PropertyAccessor.GetProperty(PR_SMTP_ADDRESS)
For lp = 0 To myReplyItem.Recipients.Count - 1
ReDim Preserve recips(lp) As String
recips(lp) = myReplyItem.Recipients(lp + 1).Address
.Cells(xlRow, 6).FormulaR1C1 = myReplyItem.To
.Cells(xlRow, 7).FormulaR1C1 = myReplyItem.CC
.Cells(xlRow, 8).FormulaR1C1 = myReplyItem.Subject
.Cells(xlRow, 9).FormulaR1C1 = myReplyItem.SentOn

If .Cells(xlRow, 5).Value = "" Then

.Cells(xlRow, 11).FormulaR1C1 = "=Now()-RC[-8]"
.Cells(xlRow, 11).NumberFormat = "[h]:mm:ss"


.Cells(xlRow, 10).FormulaR1C1 = "=RC[-1]-RC[-7]"
.Cells(xlRow, 10).NumberFormat = "[h]:mm:ss"

End If
End With
End Sub

Sub FolderPicker()

Dim objNS As Namespace
Dim objFolder As Folder

Dim MyWb As Workbook
Set MyWb = ActiveWorkbook
'Set Outlook Object
Set objNS = Outlook.GetNamespace("MAPI")
Set objFolder = objNS.PickFolder
End Sub

Public Sub PickOutlookFolder()
'Microsoft Outlook XX.X Object Library is required to run this code
'Variable declaration
Dim objNS As Namespace
Dim objFolder As Folder
Dim strFolderPath As String
Dim strEntryID As String

Dim strPick As String

'Set Outlook Object
Set objNS = Outlook.GetNamespace("MAPI")
Set objFolder = objNS.PickFolder

AppActivate Application.Caption

If TypeName(objFolder) <> "Nothing" Then
strFolderPath = objFolder.FolderPath
strEntryID = objFolder.EntryID
strPick = objFolder.Name

End If

'Show the selected folder details on Excel sheet
Sheet1.Range("B6").Value = strFolderPath
Sheet1.Range("C6").Value = strEntryID
Sheet1.Range("C7").Value = strPick

'Close the objects
Set objFolder = Nothing
Set objNS = Nothing

MsgBox ("Done")

End Sub
Outlook version
Outlook 2010 32 bit
Email Account
Exchange Server 2010
On Error Resume Next = Fail mysteriously when I do not know how to use it.

If you remove the two instances of On Error Resume Next when you run the code on the Inbox you will see any errors that were being hidden. Once fixed you would run the code on the shared mailbox and see any different errors that were being hidden.

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