Concatenating unread Outlook mails in a textbox

[BukHix]

I have some code that grabs any unread emails from Outlook and displays them in a message box one at a time. However, I am trying to bring them into a multi line textbox.

Here is the code. If I unmark the 'TextBox1.Text = strMess I only get the last message but the MsgBox(strMess) gives me each message sequentially. What am I doing wrong?

Dim oApp As Outlook.Application = _
            New Outlook.Application
        Dim sClassComp = "IPM.Note"
        Dim oNS As Outlook.NameSpace = _
            oApp.GetNamespace("MAPI")
        Dim oInbox As Outlook.MAPIFolder = _
            oNS.GetDefaultFolder(Outlook.OlDefaultFolders.olFolderInbox)
        Dim oItems As Outlook.Items = oInbox.Items
 
        oItems = oItems.Restrict("[Unread] = true")
 
        Dim oMsg As Outlook.MailItem
        Dim i As Integer
        Dim strMess As String
 
        For i = 1 To oItems.Count
            If oItems.Item(i).MessageClass = sClassComp Then
                oMsg = oItems.Item(i)
                strMess = "Message #" & (i) & vbNewLine & _
                (oMsg.SenderName) & vbNewLine & _
                (oMsg.Subject) & vbNewLine & _
                (oMsg.ReceivedTime) & vbNewLine & _
                (oMsg.Body) & vbNewLine
                'TextBox1.Text = strMess
                MsgBox(strMess)
            End If
        Next
        oApp = Nothing
        oNS = Nothing
        oItems = Nothing
        oMsg = Nothing