Excel/Outlook VBA - select folders in different Mailboxes - excel

Question

I'd like to collect some email count data from Outlook using Excel VBA. In addition to my personal email, I also have access to other mailboxes account/stores(?). The label on the Outlook mailbox/accounts are HR,Marketing, Accounting. I'd like to loop through the folders in these mailboxes/stores and perform some task.
When I write a for loop through Sessions.Accounts, it only accesses my default mailbox (i.e. not HR,Marketing,Accounting). It looks like I can access my non-default mailboxes if I loop through Session.Stores:
Sub test()
Dim olApp As Outlook.Application
Set olApp = Outlook.Application
For Each acct In olApp.Session.Stores
MsgBox acct
'how can I access folders and emails within these Stores?
End Sub
This returns message boxes with HR, Marketing, Accounting. I am not able to select the inbox or other folders within these non-default mailboxes though.
For my default mailbox, I was able to get it:
Sub default_email_count()
Dim olApp As Outlook.Application
Dim objNS As Outlook.Namespace
Set olApp = Outlook.Application
Set objNS = olApp.GetNamespace("MAPI")
Set olFolder = olbNS.GetDefaultFolder(olFolderInbox)
Set olFolder = olFolder.Folders("sample_folder")
Count = olFolder.Items.Count
Msgbox Count
'this code successfully outputs the count of emails in my default mailbox within the folder "sample folder"
How can I extend the above code to work across other Stores and not just my default mailbox?
Thanks in advance.

Answer 1

The following code shows how to enumerate all folders on all stores for an Outlook session.
The code sample begins by getting all the stores for the current session using the NameSpace.Stores property of the current session, Application.Session.
For each store of this session, it uses Store.GetRootFolder to obtain the folder at the root of the store.
For the root folder of each store, it iteratively calls the EnumerateFolders procedure until it has visited and displayed the name of each folder in that tree.
Sub EnumerateFoldersInStores()
Dim colStores As Outlook.Stores
Dim oStore As Outlook.Store
Dim oRoot As Outlook.Folder
On Error Resume Next
Set colStores = Application.Session.Stores
For Each oStore In colStores
Set oRoot = oStore.GetRootFolder
Debug.Print (oRoot.FolderPath)
EnumerateFolders oRoot
Next
End Sub
Private Sub EnumerateFolders(ByVal oFolder As Outlook.Folder)
Dim folders As Outlook.folders
Dim Folder As Outlook.Folder
Dim foldercount As Integer
On Error Resume Next
Set folders = oFolder.folders
foldercount = folders.Count
'Check if there are any folders below oFolder
If foldercount Then
For Each Folder In folders
Debug.Print (Folder.FolderPath)
EnumerateFolders Folder
Next
End If
End Sub

Answer 2

If the mailboxes are already in your profile, use the Namespace.Stores collection. Default folders can be accessed using Store.GetDefaultFolder (instead of Namespace.GetDefaultFolder).
You can also use Namespace.GetSharedDefaultFolder - it takes Recipient object as one of its parameters (you can get it from Namespace.CreateRecipient).