VBA to loop through all inboxes including shared inboxes - excel

Question

I have working code that replies to an email in the user's Outlook, based on the subject. However I am not able to have the code search through all the user's inboxes.
As of now it will only search through the user's specific inbox. Here is my code, I have searched around but I can not find a solution that my knowledge of VBA can comprehend.
Sub Display()
Dim Fldr As Outlook.Folder
Dim olfolder As Outlook.MAPIFolder
Dim olMail As Outlook.MailItem
Dim olReply As Outlook.MailItem
Dim olItems As Outlook.Items
Dim i As Integer
Dim signature As String
Set Fldr = Session.GetDefaultFolder(olFolderInbox)
Set olItems = Fldr.Items
olItems.Sort "[Received]", True
For i = 1 To olItems.count
signature = Environ("appdata") & "\Microsoft\Signatures\"
If Dir(signature, vbDirectory) <> vbNullString Then
signature = signature & Dir$(signature & "*.htm")
Else
signature = ""
End If
signature = CreateObject("Scripting.FileSystemObject").GetFile(signature).OpenAsTextStream(1, -2).ReadAll
Set olMail = olItems(i)
If InStr(olMail.Subject, Worksheets("Checklist Form").Range("B8")) <> 0 Then
If Not olMail.Categories = "Executed" Then
Set olReply = olMail.ReplyAll
With olReply
.HTMLBody = "<p style='font-family:calibri;font-size:14.5'>" & "Hi Everyone," & _
"<p style='font-family:calibri;font-size:14.5'>" & "Workflow ID:" & " " & _
Worksheets("Checklist Form").Range("B6") & "<p style='font-family:calibri;font-size:14.5'>" & _
Worksheets("Checklist Form").Range("B11") & "<p style='font-family:calibri;font-size:14.5'>" & _
"Regards," & "</p><br>" & signature & .HTMLBody
.Display
.Subject = "RO Finalized WF:" & Worksheets("Checklist Form").Range("B6") & " " & _
Worksheets("Checklist Form").Range("B2") & " -" & Worksheets("Fulfillment Checklist").Range("B3")
End With
Exit For
olMail.Categories = "Executed"
End If
End If
Next i
End Sub

Answer 1

You may reference any Inbox like this:
Option Explicit
Sub Inbox_by_Store()
Dim allStores As Stores
Dim storeInbox As Folder
Dim j As Long
Set allStores = Session.Stores
For j = 1 To allStores.count
Debug.Print j & " DisplayName - " & allStores(j).DisplayName
Set storeInbox = Nothing
' Some stores will not have an inbox
' Bypass possible expected error if there is no inbox in the store
On Error Resume Next
' Note this is one of the rare acceptable uses for On Error Resume Next
Set storeInbox = allStores(j).GetDefaultFolder(olFolderInbox)
' Turn off error bypass as soon as it is no longer needed
On Error GoTo 0
If Not storeInbox Is Nothing Then
storeInbox.Display
' your code here instead of storeInbox.Display
' Set Fldr = storeInbox
End If
Next
ExitRoutine:
Set allStores = Nothing
Set storeInbox = Nothing
End Sub

Answer 2

I don't really have the ability to test out whether this works, but these are the changes that I mentioned in the comments, I hope they work!
Sub Display()
'...
Set Fldr = Session.GetDefaultFolder(olFolderInbox)
Dim mySubfolder As Outlook.Folder 'added
For Each mySubfolder In Fldr.Folders 'added
Set olItems = mySubfolder.Items 'changed
For i = 1 To olItems.count
'...
Next i
Next mySubfolder 'added
End Sub