Sum all email.Items from Inbox + subfolders - vba

Question

Goodafternoon,
I am populating an list box with all the emails from Inbox + Subfolders, via Table object. This is working fine.
Then, with Doubleclick events from ListBox1, I am trying to open the email that is been selected. If the loop is going only through Inbox folder, it is going correct. But when I'm trying to loop through SubFolders from Inbox, it is not going. So I am trying to collect(sum) all the emails from Inbox + subfolder in one:
Set InboxItems = SubFolder.Items
But offcorse it is not working. What can be done?
my code:
Option Explicit
Private Sub ListBox1_DblClick(ByVal Cancel As MSForms.ReturnBoolean)
Dim objNS As Outlook.namespace: Set objNS = GetNamespace("MAPI")
Dim oFolder As Outlook.MAPIFolder: Set oFolder = objNS.GetDefaultFolder(olFolderInbox)
Dim i As Long
Dim j As Long
Dim InboxItems As Outlook.Items
Dim thisEmail As Outlook.MailItem
Dim SubFolder As Outlook.MAPIFolder
Dim myArray() As String
Dim Folders As New Collection
Dim entryID As New Collection
Dim StoreID As New Collection
Call GetFolder(Folders, entryID, StoreID, oFolder)
myArray = ConvertToArray(indexEmailInbox)
For j = 1 To Folders.Count
Set SubFolder = Application.Session.GetFolderFromID(entryID(j), StoreID(j))
Set InboxItems = SubFolder.Items
Next
For i = LBound(myArray) To UBound(myArray)
If Me.ListBox1.Selected(i) = True Then
If TypeName(InboxItems.Item(onlyDigits(myArray(i)))) = "MailItem" Then ' it's an email
'MsgBox onlyDigits(myArray(UBound(myArray) - i - 1))
Set thisEmail = InboxItems.Item(onlyDigits(myArray(UBound(myArray) - i - 1)))
Unload Me
thisEmail.Display
Exit Sub
End If
End If
Next i
End Sub
Function ConvertToArray(ByVal value As String)
value = StrConv(value, vbUnicode)
ConvertToArray = Split(Left(value, Len(value) - 1), "§")
End Function
Sub GetFolder(folders As Collection, entryID As Collection, StoreID As Collection, fld As MAPIFolder)
Dim SubFolder As MAPIFolder
folders.Add fld.FolderPath
entryID.Add fld.entryID
StoreID.Add fld.StoreID
For Each SubFolder In fld.folders
GetFolder folders, entryID, StoreID, SubFolder
Next SubFolder
ExitSub:
Set SubFolder = Nothing
End Sub

Answer 1

You may .Add items to a collection one at a time.
Option Explicit ' Consider this mandatory
' Tools | Options | Editor tab
' Require Variable Declaration
' If desperate declare as Variant
Private Sub collection_Emails_Folder_And_Subfolders()
Dim objFolder As folder
Dim myItemsCol As New Collection
Dim i As Long
Dim myItems As Items
Set objFolder = Session.PickFolder
If objFolder Is Nothing Then
Exit Sub
End If
'Set objFolder = Session.GetDefaultFolder(olFolderInbox)
processFolder objFolder, myItemsCol
' Methods available are limited to:
' Add, Count, Item and Remove
Debug.Print vbCr & "Final total - myItemsCol.Count: " & myItemsCol.Count
' You may access item properties
For i = 1 To myItemsCol.Count
Debug.Print " " & i & ": " & myItemsCol(i).ReceivedTime, myItemsCol(i).subject
Next i
End Sub
Private Sub processFolder(ByVal objFolder As folder, ByVal myItemsCol As Collection)
' https://stackoverflow.com/questions/2272361/can-i-iterate-through-all-outlook-emails-in-a-folder-including-sub-folders
Dim EmailCount As Long
Dim myItem As Object
Dim myItems As Items
Dim i As Long
Dim oFolder As folder
Debug.Print vbCr & "objFolder: " & objFolder
EmailCount = objFolder.Items.Count
Debug.Print " EmailCount...: " & EmailCount
If EmailCount > 0 Then
Set myItems = objFolder.Items
myItems.Sort "[ReceivedTime]", False ' oldest to newest
For i = 1 To myItems.Count
'Debug.Print " " & i & ": " & myItems(i).ReceivedTime, myItems(i).subject
myItemsCol.Add myItems(i)
Next
End If
Debug.Print " Running total: " & myItemsCol.Count
If (objFolder.Folders.Count > 0) Then
For Each oFolder In objFolder.Folders
processFolder oFolder, myItemsCol
Next
End If
End Sub
You should be able to replace InboxItems with myItemsCol.
If TypeName(myItemsCol.Item((onlyDigits(myArray(i)))) = "MailItem" Then ' it's an email
Set thisEmail = myItemsCol.Item(onlyDigits(myArray(UBound(myArray) - i - 1)))

Answer 2

It seems you just need to iterate over all subfolders in Outlook to get the number of items per folder.
Sub Test()
Set objOutlook = CreateObject( "Outlook.Application" )
Set objNamespace = objOutlook.GetNamespace( "MAPI" )
Set folders = objNamespace.DefaultStore.GetRootFolder().Folders
EnumFolders folders
End Sub
Dim counter as Long = 0
' recursively invoked function
Sub EnumFolders(folders)
For Each folder In folders
Debug.Print folder.FolderPath
Debug.Print folder.Count
counter = counter + folder.Items.Count
EnumFolders folder.Folders
Next
End Sub