Outlook VBA Importing Emails from Subfolders into Excel - vba

Question

I am trying to import details of every email (sender, received time, subject etc.) in my Inbox into an Excel file. I have code that works fine for a specific folder within the Inbox but my Inbox has several subfolders, and these subfolders also have subfolders.
After much trial and error I have managed to import details of all subfolders under the Inbox. However the code does not import the emails from the 2nd tier of subfolders and it also skips the emails that are still in the Inbox itself. I have searched this site and others but cannot find the code to loop through all folders and subfolders of an Inbox.
For example I have an Inbox with subfolders Reports, Pricing and Projects.
The Report subfolder has subfolders called Daily, Weekly and Monthly. I can import the emails in Reports but not in Daily, Weekly and Monthly.
My code as it stands is below:
Sub SubFolders()
Dim olMail As Variant
Dim aOutput() As Variant
Dim lCnt As Long
Dim xlSh As Excel.Worksheet
Dim olApp As Outlook.Application
Dim olNs As Folder
Dim olParentFolder As Outlook.MAPIFolder
Dim olFolderA As Outlook.MAPIFolder
Dim olFolderB As Outlook.MAPIFolder
Set olApp = New Outlook.Application
Set olNs = olApp.GetNamespace("MAPI").GetDefaultFolder(olFolderInbox)
Set olParentFolder = olNs
ReDim aOutput(1 To 100000, 1 To 5)
For Each olFolderA In olParentFolder.Folders
For Each olMail In olFolderA.Items
If TypeName(olMail) = "MailItem" Then
On Error Resume Next
lCnt = lCnt + 1
aOutput(lCnt, 1) = olMail.SenderEmailAddress
aOutput(lCnt, 2) = olMail.ReceivedTime
aOutput(lCnt, 3) = olMail.Subject
aOutput(lCnt, 4) = olMail.Sender
aOutput(lCnt, 5) = olMail.To
End If
Next
Next
Set xlApp = New Excel.Application
Set xlSh = xlApp.Workbooks.Add.Sheets(1)
xlSh.Range("A1").Resize(UBound(aOutput, 1), UBound(aOutput, 2)).Value = aOutput
xlApp.Visible = True
End Sub

Answer 1

From this question Can I iterate through all Outlook emails in a folder including sub-folders?
Replace your attempt to iterate the folders ...
For Each olFolderA In olParentFolder.Folders
For Each olMail In olFolderA.Items
If TypeName(olMail) = "MailItem" Then
On Error Resume Next
lCnt = lCnt + 1
aOutput(lCnt, 1) = olMail.SenderEmailAddress
aOutput(lCnt, 2) = olMail.ReceivedTime
aOutput(lCnt, 3) = olMail.Subject
aOutput(lCnt, 4) = olMail.Sender
aOutput(lCnt, 5) = olMail.To
End If
Next
Next
...using the idea of recursion described in the currently accepted answer.
Private Sub processFolder(ByVal oParent As Outlook.MAPIFolder)
Dim oFolder As Outlook.MAPIFolder
Dim oMail As Outlook.MailItem
For Each oMail In oParent.Items
'Get your data here ...
Next
If (oParent.Folders.Count > 0) Then
For Each oFolder In oParent.Folders
processFolder oFolder ' <--- no brackets around oFolder
Next
End If
End Sub
The fleshed out second answer shows how to declare variables outside of the code to pass values.
Option Explicit
Dim aOutput() As Variant
Dim lCnt As Long
Sub SubFolders()
'
' Code for Outlook versions 2007 and subsequent
' Declare with Folder rather than MAPIfolder
'
Dim xlApp As Excel.Application
Dim xlSh As Excel.Worksheet
Dim olNs As Namespace
Dim olParentFolder As Folder
Set olNs = GetNamespace("MAPI")
Set olParentFolder = olNs.GetDefaultFolder(olFolderInbox)
lCnt = 0
ReDim aOutput(1 To 100000, 1 To 5)
ProcessFolder olParentFolder
On Error Resume Next
Set xlApp = GetObject(, "Excel.Application")
On Error GoTo 0
If xlApp Is Nothing Then Set xlApp = CreateObject("Excel.Application")
Set xlSh = xlApp.Workbooks.Add.Sheets(1)
xlSh.range("A1").Resize(UBound(aOutput, 1), UBound(aOutput, 2)).Value = aOutput
xlApp.Visible = True
ExitRoutine:
Set olNs = Nothing
Set olParentFolder = Nothing
Set xlApp = Nothing
Set xlSh = Nothing
End Sub
Private Sub ProcessFolder(ByVal oParent As Folder)
Dim oFolder As Folder
Dim oMail As Object
For Each oMail In oParent.Items
If TypeName(oMail) = "MailItem" Then
lCnt = lCnt + 1
aOutput(lCnt, 1) = oMail.SenderEmailAddress
aOutput(lCnt, 2) = oMail.ReceivedTime
aOutput(lCnt, 3) = oMail.Subject
aOutput(lCnt, 4) = oMail.Sender
aOutput(lCnt, 5) = oMail.To
End If
Next
If (oParent.Folders.count > 0) Then
For Each oFolder In oParent.Folders
ProcessFolder oFolder
Next
End If
End Sub