Scope using AdvancedSearch method for entire mailbox - vba

Question

I am trying to look through all Outlook folders for mail items matching certain parameters to save the attachment, from Excel.
I don't know how to reference scope to go through all folders, even custom folders.
I can't find the resources that answer my question.
Sub testing()
Dim myOlApp As New Outlook.Application
Dim scope As String
Dim filter As String
Dim rsts As Results
Dim AdvancedSearch As Outlook.Search
blnSearchComp = False
'I want it to search the entire mail account including normal folders like inbox and sent as well as custom folders.
'but this doesn't work. Any ideas?
scope = "'Fakeexample123#outlook.com'"
'filter assignment statement has been excluded
Set AdvancedSearch = myOlApp.AdvancedSearch(scope, filter, True, "test")
While blnSearchComp <> True
If AdvancedSearch.Results.Count > 0 Then
blnSearchComp = True
End If
Wend
Set rsts = AdvancedSearch.Results
For x = rsts.Count To 1 Step -1
rsts.Attachment.Item(x).SaveAsFile Project
Next
End Sub

Answer 1

Scope should be
'\\Fakeexample123#outlook.com'
Sub Demo_scopeformat()
Dim myOlApp As New outlook.Application
Dim scope As String
' Mailbox
scope = "'" & myOlApp.Session.GetDefaultFolder(olFolderInbox).Parent.folderPath & "'"
' Expected format
Debug.Print scope
End Sub

Answer 2

Well, I know it isn't the best solution, but I have come up with the following code to make a list of all of the parent folders, so that a for loop can be used with advanced search method to iterate the list. This will not be the fastest possible code, but should not be too slow.
Sub main()
'establishes connections
Dim myOlApp As New Outlook.Application
Dim objNS As Outlook.Namespace
Dim myFolder As Outlook.MAPIFolder
Set objNS = myOlApp.GetNamespace("MAPI")
'pick highest folder level as original my folder
Set myFolder = objNS.Folders("faxe.example123#outlook.com")
Call ProcessFolders(myFolder)
End Sub
Sub ProcessFolders(myFolder)
're establish connections
Dim myOlApp As New Outlook.Application
Dim objNS As Outlook.Namespace
Dim objFolder As Outlook.MAPIFolder
Set objNS = myOlApp.GetNamespace("MAPI")
'set up collection
Set x = New Collection
For Each objFolder In myFolder.Folders
'add all parent folder names to collection
'advanced search method will handle subfolders
'can use a recursive call here also to get subfolders though
x.Add objFolder.Name
Next
Set objNS = Nothing
Set myFolder = Nothing
Set myOlApp = Nothing
End Sub